2025
Panfil, Yossef E.; Thompson, Sarah M.; Chen, Gary; Ng, Jonah J.; Kagan, Cherie R.; Bassett, Lee C.
Room-temperature quantum emission from CuZn-VS defects in ZnS:Cu colloidal nanocrystals Journal Article Forthcoming
In: arXiv, Forthcoming.
@article{Panfil2025,
title = {Room-temperature quantum emission from CuZn-VS defects in ZnS:Cu colloidal nanocrystals},
author = {Yossef E. Panfil and Sarah M. Thompson and Gary Chen and Jonah J. Ng and Cherie R. Kagan and Lee C. Bassett},
doi = {https://doi.org/10.48550/arXiv.2501.11812},
year = {2025},
date = {2025-01-21},
journal = {arXiv},
keywords = {colloids, defects, nanocrystal, quantum information science, spectroscopy},
pubstate = {forthcoming},
tppubtype = {article}
}
2024
Shulevitz, Henry J.; Amirshaghaghi, Ahmad; Ouellet, Mathieu; Brustoloni, Caroline; Yang, Shengsong; Ng, Jonah J.; Huang, Tzu-Yung; Jishkariani, Davit; Murray, Christopher B.; Tsourkas, Andrew; Kagan, Cherie R.; Bassett, Lee C.
Nanodiamond emulsions for enhanced quantum sensing and click-chemistry conjugation Journal Article
In: ACS Applied Nano Materials, 2024.
@article{Shulevitz2024,
title = {Nanodiamond emulsions for enhanced quantum sensing and click-chemistry conjugation},
author = {Henry J. Shulevitz and Ahmad Amirshaghaghi and Mathieu Ouellet and Caroline Brustoloni and Shengsong Yang and Jonah J. Ng and Tzu-Yung Huang and Davit Jishkariani and Christopher B. Murray and Andrew Tsourkas and Cherie R. Kagan and Lee C. Bassett},
url = {https://pubs.acs.org/doi/10.1021/acsanm.4c01699},
doi = {10.1021/acsanm.4c01699},
year = {2024},
date = {2024-06-29},
urldate = {2023-12-04},
journal = {ACS Applied Nano Materials},
abstract = {Nanodiamonds containing nitrogen-vacancy (NV) centers can serve as colloidal quantum sensors of local fields in biological and chemical environments. However, nanodiamond surfaces are challenging to modify without degrading their colloidal stability or the NV center's optical and spin properties. Here, we report a simple and general method to coat nanodiamonds with a thin emulsion layer that preserves their quantum features, enhances their colloidal stability, and provides functional groups for subsequent crosslinking and click-chemistry conjugation reactions. To demonstrate this technique, we decorate the nanodiamonds with combinations of carboxyl- and azide-terminated amphiphiles that enable conjugation using two different strategies. We study the effect of the emulsion layer on the NV center's spin lifetime, and we quantify the nanodiamonds' chemical sensitivity to paramagnetic ions using T1 relaxometry. This general approach to nanodiamond surface functionalization will enable advances in quantum nanomedicine and biological sensing.},
keywords = {colloids, nanocrystal, quantum information science, surface modification},
pubstate = {published},
tppubtype = {article}
}
Nanodiamonds containing nitrogen-vacancy (NV) centers can serve as colloidal quantum sensors of local fields in biological and chemical environments. However, nanodiamond surfaces are challenging to modify without degrading their colloidal stability or the NV center's optical and spin properties. Here, we report a simple and general method to coat nanodiamonds with a thin emulsion layer that preserves their quantum features, enhances their colloidal stability, and provides functional groups for subsequent crosslinking and click-chemistry conjugation reactions. To demonstrate this technique, we decorate the nanodiamonds with combinations of carboxyl- and azide-terminated amphiphiles that enable conjugation using two different strategies. We study the effect of the emulsion layer on the NV center's spin lifetime, and we quantify the nanodiamonds' chemical sensitivity to paramagnetic ions using T1 relaxometry. This general approach to nanodiamond surface functionalization will enable advances in quantum nanomedicine and biological sensing.
Lee, J; Zhao, T; Yang, S; Muduli, M; Murray, CB; Kagan, CR
One-pot heat-up synthesis of short-wavelength infrared, colloidal InAs quantum dots Journal Article
In: The Journal of Chemical Physics, vol. 160, pp. 071103, 2024.
@article{nokey,
title = {One-pot heat-up synthesis of short-wavelength infrared, colloidal InAs quantum dots},
author = {J Lee and T Zhao and S Yang and M Muduli and CB Murray and CR Kagan},
url = {https://pubs.aip.org/aip/jcp/article/160/7/071103/3266823},
doi = {10.1063/5.0187162},
year = {2024},
date = {2024-02-21},
urldate = {2024-02-21},
journal = {The Journal of Chemical Physics},
volume = {160},
pages = {071103},
abstract = {III–V colloidal quantum dots (QDs) promise Pb and Hg-free QD compositions with which to build short-wavelength infrared (SWIR) optoelectronic devices. However, their synthesis is limited by the availability of group-V precursors with controllable reactivities to prepare monodisperse, SWIR-absorbing III–V QDs. Here, we report a one-pot heat-up method to synthesize ∼8 nm edge length (∼6.5 nm in height) tetrahedral, SWIR-absorbing InAs QDs by increasing the [In3+]:[As3+] ratio introduced using commercially available InCl3 and AsCl3 precursors and by decreasing the concentration and optimizing the volume of the reducing reagent superhydride to control the concentration of In(0) and As(0) intermediates through QD nucleation and growth. InAs QDs are treated with NOBF4, and their deposited films are exchanged with Na2S to yield n-type InAs QD films. We realize the only colloidal InAs QD photoconductors with responsivity at the technologically important wavelength of 1.55 μm.},
keywords = {colloids, nanocrystal, nanocrystal electronics, optical properties, quantum dots, semiconductors, spectroscopy, surface modification, synthesis, TEM, thin films, transport},
pubstate = {published},
tppubtype = {article}
}
III–V colloidal quantum dots (QDs) promise Pb and Hg-free QD compositions with which to build short-wavelength infrared (SWIR) optoelectronic devices. However, their synthesis is limited by the availability of group-V precursors with controllable reactivities to prepare monodisperse, SWIR-absorbing III–V QDs. Here, we report a one-pot heat-up method to synthesize ∼8 nm edge length (∼6.5 nm in height) tetrahedral, SWIR-absorbing InAs QDs by increasing the [In3+]:[As3+] ratio introduced using commercially available InCl3 and AsCl3 precursors and by decreasing the concentration and optimizing the volume of the reducing reagent superhydride to control the concentration of In(0) and As(0) intermediates through QD nucleation and growth. InAs QDs are treated with NOBF4, and their deposited films are exchanged with Na2S to yield n-type InAs QD films. We realize the only colloidal InAs QD photoconductors with responsivity at the technologically important wavelength of 1.55 μm.
2022
Nguyen, Hao A.; Sharp, David; Johannes E. Fröch,; Cai, Yi-Yu; Wu, Shenwei; Monahan, Madison; Munley, Christopher; Manna, Arnab; Majumdar, Arka; Kagan, Cherie R.; Cossairt*, Brandi M.
Deterministic Quantum Light Arrays from Giant Silica-Shelled Quantum Dots Journal Article
In: ACS Applied Materials & Interfaces, vol. 15, iss. 3, pp. 4294–4302, 2022.
@article{Nguyen2022,
title = {Deterministic Quantum Light Arrays from Giant Silica-Shelled Quantum Dots},
author = {Hao A. Nguyen and David Sharp and Johannes E. Fröch, and Yi-Yu Cai and Shenwei Wu and Madison Monahan and Christopher Munley and Arnab Manna and Arka Majumdar and Cherie R. Kagan and Brandi M. Cossairt*},
url = {https://pubs.acs.org/doi/full/10.1021/acsami.2c18475},
doi = {10.1021/acsami.2c18475},
year = {2022},
date = {2022-12-12},
urldate = {2022-12-12},
journal = {ACS Applied Materials & Interfaces},
volume = {15},
issue = {3},
pages = {4294–4302},
abstract = {Colloidal quantum dots (QDs) are promising candidates for single-photon sources with applications in photonic quantum information technologies. Developing practical photonic quantum devices with colloidal materials, however, requires scalable deterministic placement of stable single QD emitters. In this work, we describe a method to exploit QD size to facilitate deterministic positioning of single QDs into large arrays while maintaining their photostability and single-photon emission properties. CdSe/CdS core/shell QDs were encapsulated in silica to both increase their physical size without perturbing their quantum-confined emission and enhance their photostability. These giant QDs were then precisely positioned into ordered arrays using template-assisted self-assembly with a 75% yield for single QDs. We show that the QDs before and after assembly exhibit antibunching behavior at room temperature and their optical properties are retained after an extended period of time. Together, this bottom-up synthetic approach via silica shelling and the robust template-assisted self-assembly offer a unique strategy to produce scalable quantum photonics platforms using colloidal QDs as single-photon emitters.},
keywords = {colloids, nanoparticle assembly, organic compounds, quantum dots, silica},
pubstate = {published},
tppubtype = {article}
}
Colloidal quantum dots (QDs) are promising candidates for single-photon sources with applications in photonic quantum information technologies. Developing practical photonic quantum devices with colloidal materials, however, requires scalable deterministic placement of stable single QD emitters. In this work, we describe a method to exploit QD size to facilitate deterministic positioning of single QDs into large arrays while maintaining their photostability and single-photon emission properties. CdSe/CdS core/shell QDs were encapsulated in silica to both increase their physical size without perturbing their quantum-confined emission and enhance their photostability. These giant QDs were then precisely positioned into ordered arrays using template-assisted self-assembly with a 75% yield for single QDs. We show that the QDs before and after assembly exhibit antibunching behavior at room temperature and their optical properties are retained after an extended period of time. Together, this bottom-up synthetic approach via silica shelling and the robust template-assisted self-assembly offer a unique strategy to produce scalable quantum photonics platforms using colloidal QDs as single-photon emitters.
2021
Gabinet, Uri R.; Lee, Changyeon; Poling-Skutvik, Ryan; Keane, Daniel; Kim, Na Kyung; Dong, Ruiqi; Vicars, Zachariah; Cai, Yusheng; Thosar, Aniket U.; Grun, Alexander; Thompson, Sarah M.; Patel, Amish J.; Kagan, Cherie R.; Composto, Russell J.; Osuji, Chinedum O.
Nanocomposites of 2D-MoS2 Exfoliated in Thermotropic Liquid Crystals Journal Article
In: ACS Materials Letters, vol. 3, no. 6, pp. 704–712, 2021.
@article{Gabinet2021,
title = {Nanocomposites of 2D-MoS2 Exfoliated in Thermotropic Liquid Crystals},
author = {Uri R. Gabinet and Changyeon Lee and Ryan Poling-Skutvik and Daniel Keane and Na Kyung Kim and Ruiqi Dong and Zachariah Vicars and Yusheng Cai and Aniket U. Thosar and Alexander Grun and Sarah M. Thompson and Amish J. Patel and Cherie R. Kagan and Russell J. Composto and Chinedum O. Osuji},
url = {https://pubs.acs.org/doi/abs/10.1021/acsmaterialslett.1c00222},
doi = {10.1021/acsmaterialslett.1c00222},
year = {2021},
date = {2021-05-05},
urldate = {2021-05-05},
journal = {ACS Materials Letters},
volume = {3},
number = {6},
pages = {704–712},
abstract = {Atomically thin MoS2 nanosheets are of interest due to unique electronic, optical, and catalytic properties that are absent in the bulk material. Methods to prepare nanosheets from bulk material that facilitate studies of 2D-MoS2 and the fabrication of useful devices have consequently assumed considerable importance. Here, we report the simultaneous exfoliation and stable dispersion of MoS2 nanosheets in a liquid crystal. Exfoliation of bulk MoS2 in mesogen-containing solutions produced stable dispersions of 2D-MoS2 that retained suspension stability for several weeks. Solvent removal in cast films yielded nanocomposites of 2D-MoS2. Preservation of single- and few-sheet MoS2 was confirmed utilizing UV–vis and Raman spectroscopy in the nematic and isotropic fluid states of the system and, remarkably, in the solid crystal as well. Importantly, the MoS2 nanosheets remained well-dispersed upon polymerization of the reactive mesogen to form a liquid crystal polymer. The ability to stably disperse 2D-MoS2 in a structured fluid opens up new possibilities for studying anisotropic properties of MoS2 and for exploiting such properties in responsive materials.},
keywords = {2D-materials, colloids, exfoliation, polymerization, surface interactions},
pubstate = {published},
tppubtype = {article}
}
Atomically thin MoS2 nanosheets are of interest due to unique electronic, optical, and catalytic properties that are absent in the bulk material. Methods to prepare nanosheets from bulk material that facilitate studies of 2D-MoS2 and the fabrication of useful devices have consequently assumed considerable importance. Here, we report the simultaneous exfoliation and stable dispersion of MoS2 nanosheets in a liquid crystal. Exfoliation of bulk MoS2 in mesogen-containing solutions produced stable dispersions of 2D-MoS2 that retained suspension stability for several weeks. Solvent removal in cast films yielded nanocomposites of 2D-MoS2. Preservation of single- and few-sheet MoS2 was confirmed utilizing UV–vis and Raman spectroscopy in the nematic and isotropic fluid states of the system and, remarkably, in the solid crystal as well. Importantly, the MoS2 nanosheets remained well-dispersed upon polymerization of the reactive mesogen to form a liquid crystal polymer. The ability to stably disperse 2D-MoS2 in a structured fluid opens up new possibilities for studying anisotropic properties of MoS2 and for exploiting such properties in responsive materials.
2015
Paik, Taejong; Diroll, Benjamin T.; Kagan, Cherie R.; Murray, Christopher B.
Binary and Ternary Superlattices Self-Assembled from Colloidal Nanodisks and Nanorods Journal Article
In: Journal of the American Chemical Society, vol. 137, no. 20, pp. 6662–6669, 2015.
@article{Paik2015,
title = {Binary and Ternary Superlattices Self-Assembled from Colloidal Nanodisks and Nanorods},
author = {Taejong Paik and Benjamin T. Diroll and Cherie R. Kagan and Christopher B. Murray},
url = {https://pubs.acs.org/doi/abs/10.1021/jacs.5b03234},
doi = {10.1021/jacs.5b03234},
year = {2015},
date = {2015-04-30},
journal = {Journal of the American Chemical Society},
volume = {137},
number = {20},
pages = {6662–6669},
abstract = {Self-assembly of multicomponent anisotropic nanocrystals with controlled orientation and spatial distribution allows the design of novel metamaterials with unique shape- and orientation-dependent collective properties. Although many phases of binary structures are theoretically proposed, the examples of multicomponent assemblies, which are experimentally realized with colloidal anisotropic nanocrystals, are still limited. In this report, we demonstrate the formation of binary and ternary superlattices from colloidal two-dimensional LaF3 nanodisks and one-dimensional CdSe/CdS nanorods via liquid interfacial assembly. The colloidal nanodisks and nanorods are coassembled into AB-, AB2-, and AB6-type binary arrays determined by their relative size ratio and concentration to maximize their packing density. The position and orientation of anisotropic nanocrystal building blocks are tightly controlled in the self-assembled binary and ternary lattices. The macroscopic orientation of the superlattices is further tuned by changing the liquid subphase used for self-assembly, resulting in the formation of lamellar-type binary liquid crystalline superlattices. In addition, we demonstrate a novel ternary superlattice self-assembled from two different sizes of nanodisks and a nanorod, which offers the unique opportunity to design multifunctional metamaterials.},
keywords = {colloids, liquid crystals, nanodisks, nanorods, self-assembly, superlattices},
pubstate = {published},
tppubtype = {article}
}
Self-assembly of multicomponent anisotropic nanocrystals with controlled orientation and spatial distribution allows the design of novel metamaterials with unique shape- and orientation-dependent collective properties. Although many phases of binary structures are theoretically proposed, the examples of multicomponent assemblies, which are experimentally realized with colloidal anisotropic nanocrystals, are still limited. In this report, we demonstrate the formation of binary and ternary superlattices from colloidal two-dimensional LaF3 nanodisks and one-dimensional CdSe/CdS nanorods via liquid interfacial assembly. The colloidal nanodisks and nanorods are coassembled into AB-, AB2-, and AB6-type binary arrays determined by their relative size ratio and concentration to maximize their packing density. The position and orientation of anisotropic nanocrystal building blocks are tightly controlled in the self-assembled binary and ternary lattices. The macroscopic orientation of the superlattices is further tuned by changing the liquid subphase used for self-assembly, resulting in the formation of lamellar-type binary liquid crystalline superlattices. In addition, we demonstrate a novel ternary superlattice self-assembled from two different sizes of nanodisks and a nanorod, which offers the unique opportunity to design multifunctional metamaterials.
Kovalenko, Maksym V.; Manna, Liberato; Cabo, Andreu; Hens, Zeger; Talapin, Dmitri V.; Kagan, Cherie R.; Klimov, Victor I.; Rogach, Andrey L.; Reiss, Peter; Milliron, Delia J.; Guyot-Sionnnest, Philippe; Konstantatos, Gerasimos; Parak, Wolfgang J.; Hyeon, Taeghwan; Korgel, Brian A.; Murray, Christopher B.; Heiss, Wolfgang
Prospects of Nanoscience with Nanocrystals Journal Article
In: ACS Nano, vol. 9, no. 2, pp. 1012–1057, 2015.
@article{Kovalenko2015,
title = {Prospects of Nanoscience with Nanocrystals},
author = {Maksym V. Kovalenko and Liberato Manna and Andreu Cabo and Zeger Hens and Dmitri V. Talapin and Cherie R. Kagan and Victor I. Klimov and Andrey L. Rogach and Peter Reiss and Delia J. Milliron and Philippe Guyot-Sionnnest and Gerasimos Konstantatos and Wolfgang J. Parak and Taeghwan Hyeon and Brian A. Korgel and Christopher B. Murray and Wolfgang Heiss},
url = {https://pubs.acs.org/doi/full/10.1021/nn506223h},
doi = {10.1021/nn506223h},
year = {2015},
date = {2015-01-22},
journal = {ACS Nano},
volume = {9},
number = {2},
pages = {1012–1057},
abstract = {Colloidal nanocrystals (NCs, i.e., crystalline nanoparticles) have become an important class of materials with great potential for applications ranging from medicine to electronic and optoelectronic devices. Today’s strong research focus on NCs has been prompted by the tremendous progress in their synthesis. Impressively narrow size distributions of just a few percent, rational shape-engineering, compositional modulation, electronic doping, and tailored surface chemistries are now feasible for a broad range of inorganic compounds. The performance of inorganic NC-based photovoltaic and light-emitting devices has become competitive to other state-of-the-art materials. Semiconductor NCs hold unique promise for near- and mid-infrared technologies, where very few semiconductor materials are available. On a purely fundamental side, new insights into NC growth, chemical transformations, and self-organization can be gained from rapidly progressing in situ characterization and direct imaging techniques. New phenomena are constantly being discovered in the photophysics of NCs and in the electronic properties of NC solids. In this Nano Focus, we review the state of the art in research on colloidal NCs focusing on the most recent works published in the last 2 years.},
keywords = {colloids, nanocrystal, nanocrystal electronics},
pubstate = {published},
tppubtype = {article}
}
Colloidal nanocrystals (NCs, i.e., crystalline nanoparticles) have become an important class of materials with great potential for applications ranging from medicine to electronic and optoelectronic devices. Today’s strong research focus on NCs has been prompted by the tremendous progress in their synthesis. Impressively narrow size distributions of just a few percent, rational shape-engineering, compositional modulation, electronic doping, and tailored surface chemistries are now feasible for a broad range of inorganic compounds. The performance of inorganic NC-based photovoltaic and light-emitting devices has become competitive to other state-of-the-art materials. Semiconductor NCs hold unique promise for near- and mid-infrared technologies, where very few semiconductor materials are available. On a purely fundamental side, new insights into NC growth, chemical transformations, and self-organization can be gained from rapidly progressing in situ characterization and direct imaging techniques. New phenomena are constantly being discovered in the photophysics of NCs and in the electronic properties of NC solids. In this Nano Focus, we review the state of the art in research on colloidal NCs focusing on the most recent works published in the last 2 years.
2014
“Designing High-Performance PbS and PbSe Nanocrystal Electronic Devices through Stepwise, Post-Synthesis, Colloidal Atomic Layer Deposition,” Soong Ju Oh, Nathaniel E. Berry, Ji-Hyuk Choi, E. Ashley Gaulding, Hangfei Lin, Taejong Paik, Benjamin. T. Diroll, Shin Muramoto, Christopher B. Murray, and Cherie R. Kagan NANO Letters, 14 (3) 1559-1566 (2014)
“Air-Stable, Nanostructured Electronic and Plasmonic Materials from Solution-Processable, Silver Nanocrystal Building Blocks,” Aaron T. Fafarman, Sung-Hoon Hong, Soong Ju Oh, Humeyra Caglayan, Xingchen Ye, Benjamin T. Diroll, Nader Engheta, Christopher B. Murray, and Cherie R. Kagan ACS NANO, 8 (3) 2746-2754 (2014)
“Solution-Processed Phase-Change VO2 Metamaterials from Colloidal Vanadium Oxide (VOx) Nanocrystals,” Taejong Paik, Sung-Hoon Hong, E. Ashley Gaulding, Humeyra Caglayan, Thomas R. Gordon, Nader Engheta, Cherie R. Kagan, and Christopher B. Murray ACS NANO, 8 (1) 797-806 (2014)
2013
“Solution-Based Stoichiometric Control over Charge Transport in Nanocrystalline CdSe Devices,” David K. Kim, Aaron T. Fafarman, Benjamin T. Diroll, Silvia H Chan, Thomas R. Gordon, Christopher B. Murray, and Cherie R. Kagan ACS NANO, 7 (10) 8760-8770 (2013)
“Crystallographic anisotropy of the resistivity size effect in single crystal tungsten nanowires,” Dooho Choi, Matthew Moneck, Xuan Liu, Soong Ju Oh, Cherie R. Kagan, Kevin R. Coffey, & Katayun Barmak Scientific Reports, 3 (2591) 1-4 (2013)
“In-situ Repair of High-Performance, Flexible Nanocrystal Electronics for Large-Area Fabrication and Operation in Air,” Ji-Hyuk Choi, Soong Ju Oh, Yuming Lai, David K. Kim, Tianshuo Zhao, Aaron T. Fafarman, Benjamin T. Diroll, Christopher B. Murray, and Cherie R. Kagan ACS Nano, 7 (9) 8275-8283 (2013)
“Near-Infrared Metatronic Nanocircuits by Design,” Humeyra Caglayan*, Sung-Hoon Hong*, Brian Edwards, Cherie R. Kagan, and Nader Engheta Physical Review Letters, 111 073904 (2013)
* Indicates equal contribution
“Plasmonic Enhancement of Nanophosphor Upconversion Luminescence in Au Nanohole Arrays,” Marjan Saboktakin, Xingchen Ye, Uday K. Chettiar, Nader Engheta , Christopher B. Murray, and Cherie R. Kagan ACS Nano, 7 (8) 7186-7192 (2013)
“Competition of shape and interaction patchiness for self-assembling nanoplates,” Xingchen Ye, Jun Chen, Michael Engel, Jaime A. Millan, Wenbin Li, Liang Qi, Guozhong Xing, Joshua E. Collins, Cherie R. Kagan, Ju Li, Sharon C. Glotzer & Christopher B. Murray Nature Chemistry, 5 466-473 (2013)
“Stoichiometric Control of Lead Chalcogenide Nanocrystal Solids to Enhance Their Electronic and Optoelectronic Device Performance,” Soong Ju Oh, Nathaniel E. Berry, Ji-Hyuk Choi, E. Ashley Gaulding, Taejong Paik, Sung-Hoon Hong, Christopher B. Murray, and Cherie R. Kagan ACS Nano, 7 (3) 2413-2421 (2013)
“Engineering Catalytic Contacts and Thermal Stability: Gold/Iron Oxide Binary Nanocrystal Superlattices for CO Oxidation,” Yijin Kang, Xingchen Ye, Jun Chen, Liang Qi, Rosa E. Diaz, Vicky Doan-Nguyen, Guozhong Xing, Cherie R. Kagan, Ju Li, Raymond J. Gorte, Eric A. Stach, and Christopher B. Murray JACS, 135 4 1499-1505 (2013)
“Bistable Magnetoresistance Switching in Exchange-Coupled CoFe2O4-Fe3O4 Binary Nanocrystal Superlattices by Self-Assembly and Thermal Annealing,” Jun Chen, Xingchen Ye, Soong Ju Oh, James M. Kikkawa, Cherie R. Kagan, and Christopher B. Murray ACS Nano, 7(2) 1478-1486 (2013)
“Chemically Tailored Dielectric-to-Metal Transition for the Design of Metamaterials from Nanoimprinted Colloidal Nanocrystals,” Aaron T. Fafarman*, Sung-Hoon Hong*, Humeyra Caglayan, Xingchen Ye, Benjamin T. Diroll, Taejong Paik, Nader Engheta, Christopher B. Murray & Cherie R. Kagan Nano Letters, 13 (2) 350-357 (2013)
*=Equal Contributors
2012
“Flexible and low-voltage integrated circuits constructed from high-performance nanocrystal transistors,” David K. Kim*, Yuming Lai*, Benjamin T. Diroll, Christopher B. Murray & Cherie R. Kagan Nature Communications, 3 (1216) 1-6 (2012)
*=Equal Contributors
“The State of Nanoparticle-Based Nanoscience and Biotechnology: Progress, Promises, and Challenges,” Beatriz Pelaz, Sarah Jaber, Dorleta Jimenez de Aberasturi, Verena Wulf, Takuzo Aida, Jesus M. de la Fuente, Jochen Feldmann, Hermann E. Gaub, Lee Josephson, Cherie R. Kagan, Nicholas A. Kotov, Luis M. Liz-Marzan, Hedi Mattoussi, Paul Mulvaney, Christopher B. Murray, Andrey L. Rogach, Paul S. Weiss, Itamar Willner, and Wolfgang J. Parak, ACS Nano, 6 (10) 8468-8483 (2012)
“Metal Enhanced Upconversion Luminescence Tunable through Metal Nanoparticle-Nanophosphor Separation,” Marjan Saboktakin, Xingchen Ye, Soong Ju Oh, Sung-Hoon Hong, Aaron T. Fafarman, Uday K. Chettiar, Nader Engheta, Christopher B. Murray, and Cherie R. Kagan, ACS Nano, 6 (10) 8758-8766 (2012)
“Bandlike Transport in Strongly Coupled and Doped Quantum Dot Solids: A Route to High-Performance Thin-Film Electronics,” Ji-Hyuk Choi, Aaron T. Fafarman, Soong Ju Oh, Dong-Kyun Ko, David K. Kim, Benjamin T. Diroll, Shin Muramoto, J. Greg Gillen, Christopher B. Murray, and Cherie R. Kagan, Nano Letters, 12 (5) 2631-2638 (2012)
“Remote Doping and Schottky Barrier Formation in Strongly Quantum Confined Single PbSe Nanowire Field-Effect Transistors,” Soong Ju Oh, David K. Kim, and Cherie. R. Kagan, ACS Nano, 6 (5) 4328-4334 (2012)
“Wrinkles and deep folds as photonic structures in photovoltaics,” Jong Bok Kim, Pilnam Kim, Nicolas C. Pgard, Soong Ju Oh, Cherie R. Kagan, Jason W. Fleischer, Howard A. Stone and Yueh-Lin Loo, Nature Photonics, 6 327-332 (2012)
“An Improved Size-Tunable Synthesis of Monodisperse Gold Nanorods through the Use of Aromatic Additives,” Xingchen Ye, Linghua Jin, Humeyra Caglayan, Jun Chen, Guozhong Xing, Chen Zheng, Vicky Doan-Nguyen, Yijin Kang, Nader Engheta, Cherie R. Kagan, and Christopher B. Murray, ACS Nano, 6 2804-2817 (2012)
“Molecular Monolayers as Semiconducting Channels in Field Effect Transistors,” Cherie R. Kagan, Topics in Current Chemistry, 312 213-237, (2012)
2011
“Flexible, Low-Voltage, and Low-Hysteresis PbSe Nanowire Field-Effect Transistors,” David K. Kim, Yuming Lai, Tarun R. Vemulkar, and Cherie R. Kagan, ACS Nano, 5 (12) 10074-10083, (2011)
“Thiocyanate-capped PbS nanocubes: ambipolar transport enables quantum dot-based circuits on a flexible substrate,” Weon-kyu Koh , Sangameshwar R Saudari , Aaron T. Fafarman , Cherie R. Kagan , and Christopher B. Murray, Nano Letters, 11 (11) 4764-4767, (2011)
“Near-Infrared Absorption of Monodisperse Silver Telluride (Ag2Te) Nanocrystals and Photoconductive Response of Their Self-Assembled Superlattices,” Yu-Wen Liu, Dong-Kyun Ko, Soong Ju Oh, Thomas R. Gordon, Vicky Doan-Nguyen, Taejong Paik, Yijin Kang, Xingchen Ye, Linghua Jin, Cherie R. Kagan, and Christopher B. Murray, ACS Chemistry of Materials, 23 (21) 4657-4659, (2011)
“Diketopyrrolopyrrole-based p-bridged Donor-Acceptor Polymer for Photovoltaic Applications,” Wenting Li, Taegweon Lee, Soong Ju Oh, and Cherie R. Kagan, ACS Applied Materials and Interfaces, 3 (10) 3874-3883 (2011)
“Flexible Organic Electronics for Use in Neural Sensing,” Hank Bink*, Yuming Lai*, Sangamweshwar Rao Saudari, Brian Helfer, Jonathan Viventi, Jan Van der Spiegel, Brian Litt, Cherie Kagan, IEEE EMBC 2011 5400-5403 (2011)
* = Equal Contributors
“Thiocyanate Capped Nanocrystal Colloids: A Vibrational Reporter of Surface Chemistry and a Solution-based Route to Enhanced Coupling in Nanocrystal Solids,” Aaron T. Fafarman, Weon-kyu Koh, Benjamin T. Diroll, David K. Kim, Dong-Kyun Ko, Soong Ju Oh, Xingchen Ye, Vicky Doan-Nguyen, Michael R. Crump, Danielle C. Reifsnyder, Christopher B. Murray, and Cherie R. Kagan, Journal of the American Chemical Society, 133 (39), 15753-15761, (2011)
“Ambipolar and Unipolar PbSe Nanowire Field-Effect Transistors,” David K. Kim, Tarun R. Vemulkar, Soong-Ju Oh, Weon-kyu Koh, Christopher B. Murray and Cherie R. Kagan, ACS Nano, 5 (4), 3230-3236, (2011)
“Multiscale Periodic Assembly of Striped Nanocrystal Superlattice Films on a Liquid Surface,” Angang Dong, Jun Chen, Soong Ju Oh, Weon-kyu Koh, Faxian Xiu, Xingchen Ye, Dong-Kyun Ko, Kang L. Wang, Cherie R. Kagan, and Christopher B. Murray, Nano Letters, 11 (2), 841-846, (2011)
2010
“Comparison of the Energy-level Alignment of Thiolate- and Carbodithiolate-Bound Self-Assembled Monolayers on Gold,” Philip Schulz, Christopher D. Zangmeister, Yi-Lei Zhao, Paul R. Frail, Sangameshwar R. Saudari, Carlos A. Gonzalez, Cherie R. Kagan, Matthias Wuttig, and Roger D. van Zee, Journal of Physical Chemistry C, 114 (48), 20843-20851, (2010)
“Device Configurations for Ambipolar Transport in Flexible, Pentacene Transistors,” Sangameshwar Rao Saudari, Yu Jen Lin, Yuming Lai and Cherie R. Kagan, Advanced Materials, 44, 5063-5068, (2010)
“Small-Molecule Thiophene-C60 Dyads As Compatibilizers in Inverted Polymer Solar Cells,” Jong Bok Kim, Kathryn Allen, Soong Ju Oh, Stephanie Lee, Michael F. Toney, Youn Sang Kim, Cherie R. Kagan, Colin Nuckolls, and Yueh-Lin Loo, Chemistry of Materials, 22 (20), pp 5762-5773 (2010)
2009
“Ambipolar transport in solution-deposited pentacene transistors enhanced by molecular engineering of device contacts,” Sangameshwar Rao Saudari, Paul R. Frail, Cherie R. Kagan , Appl. Phys. Lett, 95, 023301 (2009)
2007
“Chemically Assisted Directed Assembly of Carbon Nanotubes for the Fabrication of Large-Scale Device Arrays,” G. S. Tulevski, J. Hannon, A. Afzali, Z. Chen, Ph. Avouris, C. R. Kagan, J. American Chemical Society, 129 (39), 11964 (2007)
“Alignment, Electronic Properties, Doping, and On-Chip Growth of Colloidal PbSe Nanowires,” D. V. Talapin, C. T. Black, C. R. Kagan, E. V. Shevchenko, A. Afzali, C. B. Murray, J. Phys. Chem. C, 111 (35), 13244 (2007)
“Synergistic Effects in Binary Nanocrystal Superlattices: Enhanced p-Type Conductivity in Self-Assembled PbTe/Ag2Te Thin Films,” J. J. Urban, D. V. Talapin, E. V. Shevchenko, C. R. Kagan, C. B. Murray, Nature Materials, 6 (2), 115 (2007).
“Molecular Assemblies: Briding the Gap to Form Molecular Junctions,” C. R. Kagan, C. Lin, in Multifunctional Conducting Molecular Materials, eds. G. Saito, F. Wudl, R. C. Haddon, K. Tanigaki, T. Enoki, H. E. Katz, M. Maesato, Royal Society of Chemistry, London 306, 248, (2007).
2006
“The Role of Chemical Contacts in Molecular Conductance,” N. D. Lang, C. R. Kagan, Nano Letters, 6, 2955 (2006).
“Enforced One-Dimensional Photoconductivity in Core-Cladding Hexabenzocorenenes,” Y. S. Cohen, S. Xiao, C. Nuckolls, C. R. Kagan, Nano Letters, 6, 2838 (2006).
“Organic and Organic-Inorganic Hybrid Molecular Devices,” Proceedings of the 12th International Micromachine/Nanotech Symposium, 31 (2006).
“Device Scaling in Sub-100 nm Pentacene FETs,” G. S. Tulevski, A. Afzali, T. O Graham, C. Nuckolls, C. R. Kagan, Applied Physics Letters, 89, 183101 (2006).
“Chemical Complementarity in the Contacts for Nanoscale Organic Field-Effect Transistors,” G. S. Tulevski, Q. Miao, A. Afzali, T. O. Graham, C. R. Kagan, C. Nuckolls, Journal of the American Chemical Society, 128, 1788 (2006).
2005
“Self-assembly and Oligomerization of Alkyne-Terminated Molecules on Metal and Oxide Surfaces,” L. Vyklicky, A. Afzali, C. R. Kagan, Langmuir, 21, 11574 (2005).
“Operational and Environmental Stability of Pentacene Thin Film Transistors,” C. R. Kagan, A. Afzali, T. O. Graham, Applied Physics Letters, 86, 193505 (2005).
“N-Sulfinylcarbamate-Pentacene Adduct; a Novel Pentacene Precursor Soluble in Alcohols,” A. Afzali, C. R. Kagan, G. Traub, Synthetic Metals, 155, 490 (2005).
“Electrostatic Field and Partial Fermi Level Pinning at the Pentacene-SiO2 Interface,” L. Chen, R. Ludeke, X. Cui, A. G. Schrott, C. R. Kagan, L. E. Brus, Journal of Physical Chemistry B, 109, 1834 (2005).
2004
“Molecular Transport Junctions: An Introduction,” C. R. Kagan, M. A. Ratner, MRS Bulletin, edited by C. R. Kagan, M. A. Ratner, 29, 376 (2004).
“Direct Assembly of Organic Semiconductors on Gate Oxides,” G. S. Tulevski, Q. Miao, M. Fukuto, R. Abram, B. Ocko, R. Pindak, C. R. Kagan, C. Nuckolls, Journal of the American Chemical Society, 126, 15048 (2004).
“Understanding the Molecular Transistor,” P. Solomon, C. R. Kagan in Future Trends in Microelectronics: The Nano, the Giga, and the Ultra, edited by S. Luryi, J. Xu, A. Zaslavsky, Wiley, NY (2004), p.168.
2003
“Evaluations and Considerations for Self-Assembled Monolayer Field-Effect Transistors,” C. R. Kagan, A. Afzali, R. Martel, L. M. Gignac, P. M. Solomon, A. Schrott, B. Ek, Nano Letters, 3, 119 (2003).
“Layer-by-Layer Growth of Metal-Metal Bonded Supramolecular Thin Films and Its Use in the Fabrication of Lateral Nanoscale Devices,” C. Lin and C. R. Kagan, Journal of the American Chemical Society, 125, 336 (2003).
“Organic-Inorganic Thin Film Transistors,” D. B. Mitzi, C. R. Kagan in Thin Film Transistors, edited by C. R. Kagan, P. S. Andry, Marcell-Dekker, NY, (2003), p. 475.
“Charge Transport on the Nanoscale,” D. Adams, L. Brus, C. E. D. Chidsey, S. Creager, C. Creutz, C. R. Kagan, P. Kamat, M. Lieberman, S. Lindsay, R. A. Marcus, R. M. Metzger, M. E. Michel-Beyerle, J. R. Miller, M. D. Newton, D. R. Rolison, O. Sankey, K. S. Schanze, J. Yardley, X. Zhu, Journal of Physical Chemistry B, 107, 6668 (2003).
2002
“An efficient synthesis of symmetrical oligothiophenes: Synthesis and transport properties of a soluble sexithiophene derivative,” A. Afzali, T. L. Breen, C. R. Kagan, Chemistry of Materials, 14(4), 1742 (2002) .
2001
“Patterning Organic-Inorganic Thin-Film Transistors Using Microcontact Printed Templates,” C. R. Kagan, T. L Breen, L. L. Kosbar, Applied Physics Letters 79 (21), 3536 (2001).
“Organic-Inorganic Electronics,” D. B. Mitzi, K. Chondroudis, C. R. Kagan, IBM Journal of Research and Development, 45, 29 (2001).
“Colloidal Synthesis of Nanocrystals and Nanocrystal Superlattices,” C. B. Murray, S. Sun, W. Gaschler, H. Doyle, T. Betley, C. R. Kagan, IBM Journal of Research and Development, 45, 47 (2001).
2000
“Synthesis and Characterization of Monodisperse Nanocrystals and Close Packed Nanocrystal Assemblies,” C. B. Murray, C. R. Kagan, M. G. Bawendi, Annual Review of Materials Science 30, 545, (2000).
“Photoconductivity in CdSe Quantum Dot Solids,” C. A. Leatherdale, C. R. Kagan, N. Y. Morgan, S. A. Empedocles, M. A. Kastner, and M. G. Bawendi, Physical Review B, 62, 2669 (2000).
1999
“Organic-Inorganic Hybrid Materials as Semiconducting Channels in Thin-Film Field-Effect Transistors,” C. R. Kagan, D. B. Mitzi, C. D. Dimitrakopoulos, Science, 286, 945 (1999).
“Design, Structure, and Optical Properties of Organic-Inorganic Perovskites Containing an Oligothiophene Chromophore,” David B. Mitzi, Konstantinos Chondroudis, Cherie R. Kagan, Inorganic Chemistry 38, 6246 (1999).
“Charge Generation and Transport in CdSe Semiconductor Quantum Dot Solids,” C. A. Leatherdale, N. Y. Morgan, C. R. Kagan, S. A. Empedocles, M. G. Bawendi, M. A. Kastner, MRS Proceedings 571, 191 (1999).
1998
“Submicron Confocal Raman Imaging of Holograms in Multicomponent Photopolymers,” C. R. Kagan, T. D. Harris, A. L. Harris, and M. L. Schilling, Journal of Chemical Physics, 108, 6892 (1998).
1996
“Long Range Resonance Transfer of Electronic Excitations in Close Packed CdSe Quantum Dot Solids,” C. R. Kagan, C. B. Murray, and M. G. Bawendi, Physical Review B, 54, 8633 (1996).
“Electronic Energy Transfer in CdSe Quantum Dot Solids,” C. R. Kagan, C. B. Murray, M. Nirmal, M. G. Bawendi, Physical Review Letters, 76, 1517 (1996).
1995
“Self Organization of CdSe Nanocrystallites into Three Dimensional Quantum Dot Superlattices,” C. B. Murray, C. R. Kagan, and M. G. Bawendi, Science, 270, 1335 (1995).
“Synthesis, Structural Characterization, and Optical Spectroscopy of Close Packed CdSe Nanocrystallites,” C. R. Kagan, C. B. Murray, M. G. Bawendi, MRS Proceedings, 358, 219 (1995).
1993
“Solution Precipitation of CdSe Quantum Dots,” C. R. Kagan, M. J. Cima, MRS Proceedings, 283, 841 (1993).
1992
“Ion-Exchange Reactions of Potassium Brannerite, K0.8(V0.8Mo1.2)O6,” Peter K. Davies and Cherie R. Kagan, Solid State Ionics, 53-56, 546-552 (1992).
Books and Journals Edited
“Molecular Transport Junctions,” edited by C. R. Kagan, M. A. Ratner, MRS Bulletin, Materials Research Society, PA, (2004).
“Thin Film Transistors,” edited by C. R. Kagan, P. S. Andry, Marcell-Dekker, NY, (2003).
