Search Results - "Utterback, James K"
-
1
Observation of trapped-hole diffusion on the surfaces of CdS nanorods
Published in Nature chemistry (01-11-2016)“…In CdS nanocrystals, photoexcited holes rapidly become trapped at the particle surface. The dynamics of these trapped holes have profound consequences for the…”
Get full text
Journal Article -
2
Relationships between Exciton Dissociation and Slow Recombination within ZnSe/CdS and CdSe/CdS Dot-in-Rod Heterostructures
Published in Nano letters (14-06-2017)“…Type-II and quasi type-II heterostructure nanocrystals are known to exhibit extended excited-state lifetimes compared to their single material counterparts…”
Get full text
Journal Article -
3
Conformation of self-assembled porphyrin dimers in liposome vesicles by phase-modulation 2D fluorescence spectroscopy
Published in Proceedings of the National Academy of Sciences - PNAS (04-10-2011)“…By applying a phase-modulation fluorescence approach to 2D electronic spectroscopy, we studied the conformation-dependent exciton coupling of a porphyrin dimer…”
Get full text
Journal Article -
4
Competition between electron transfer, trapping, and recombination in CdS nanorod-hydrogenase complexes
Published in Physical chemistry chemical physics : PCCP (01-01-2015)“…Electron transfer from photoexcited CdS nanorods to [FeFe]-hydrogenase is a critical step in photochemical H2 production by CdS-hydrogenase complexes. By…”
Get more information
Journal Article -
5
Self-assembly of nanocrystals into strongly electronically coupled all-inorganic supercrystals
Published in Science (American Association for the Advancement of Science) (25-03-2022)“…Colloidal nanocrystals of metals, semiconductors, and other functional materials can self-assemble into long-range ordered crystalline and quasicrystalline…”
Get full text
Journal Article -
6
Electron Transfer from Semiconductor Nanocrystals to Redox Enzymes
Published in Annual review of physical chemistry (20-04-2020)“…This review summarizes progress in understanding electron transfer from photoexcited nanocrystals to redox enzymes. The combination of the light-harvesting…”
Get full text
Journal Article -
7
Role of Surface-Capping Ligands in Photoexcited Electron Transfer between CdS Nanorods and [FeFe] Hydrogenase and the Subsequent H2 Generation
Published in Journal of physical chemistry. C (11-01-2018)“…Complexes of CdS nanorods and [FeFe] hydrogenase I from Clostridium acetobutylicum have been shown to photochemically produce H2. This study examines the role…”
Get full text
Journal Article -
8
Zwitterions in 3D Perovskites: Organosulfide-Halide Perovskites
Published in Journal of the American Chemical Society (14-12-2022)“…Although sulfide perovskites usually require high-temperature syntheses, we demonstrate that organosulfides can be used in the milder syntheses of halide…”
Get full text
Journal Article -
9
Nanoscale Disorder Generates Subdiffusive Heat Transport in Self-Assembled Nanocrystal Films
Published in Nano letters (28-04-2021)“…Investigating the impact of nanoscale heterogeneity on heat transport requires a spatiotemporal probe of temperature on the length and time scales intrinsic to…”
Get full text
Journal Article -
10
Helmholtz Resonator Applied to Nanocrystal-Based Infrared Sensing
Published in Nano letters (09-11-2022)“…While the integration of nanocrystals as an active medium for optoelectronic devices progresses, light management strategies are becoming required. Over recent…”
Get full text
Journal Article -
11
Coupling Ferroelectric to colloidal Nanocrystals as a Generic Strategy to Engineer the Carrier Density Landscape
Published in Advanced functional materials (01-08-2023)“…The design of infrared nanocrystals‐based (NCs) photodiodes faces a major challenge related to the identification of barriers with a well‐suited band alignment…”
Get full text
Journal Article -
12
In Situ X‑ray Scattering Reveals Coarsening Rates of Superlattices Self-Assembled from Electrostatically Stabilized Metal Nanocrystals Depend Nonmonotonically on Driving Force
Published in ACS nano (06-02-2024)“…Self-assembly of colloidal nanocrystals (NCs) into superlattices (SLs) is an appealing strategy to design hierarchically organized materials with promising…”
Get full text
Journal Article -
13
Mapping the Energy Landscape from a Nanocrystal-Based Field Effect Transistor under Operation Using Nanobeam Photoemission Spectroscopy
Published in Nano letters (22-02-2023)“…As the field of nanocrystal-based optoelectronics matures, more advanced techniques must be developed in order to reveal the electronic structure of…”
Get full text
Journal Article -
14
Infrared Imaging Using Thermally Stable HgTe/CdS Nanocrystals
Published in Nano letters (12-04-2024)“…Transferring nanocrystals (NCs) from the laboratory environment toward practical applications has raised new challenges. HgTe appears as the most spectrally…”
Get full text
Journal Article -
15
Trapped-Hole Diffusion in Photoexcited CdSe Nanorods
Published in Journal of physical chemistry. C (26-07-2018)“…Surface charge-carrier traps are ubiquitous in colloidal semiconductor nanocrystals and fundamentally impact excited-state relaxation, making it critical to…”
Get full text
Journal Article -
16
Temperature-Dependent Transient Absorption Spectroscopy Elucidates Trapped-Hole Dynamics in CdS and CdSe Nanorods
Published in The journal of physical chemistry letters (06-06-2019)“…Charge-carrier traps play a central role in the excited-state dynamics of semiconductor nanocrystals, but their influence is often difficult to measure…”
Get full text
Journal Article -
17
Correction to “Zwitterions in 3D Perovskites: Organosulfide-Halide Perovskites”
Published in Journal of the American Chemical Society (28-06-2023)Get full text
Journal Article -
18
On the Nature of Trapped-Hole States in CdS Nanocrystals and the Mechanism of Their Diffusion
Published in The journal of physical chemistry letters (21-06-2018)“…Recent transient absorption experiments on CdS nanorods suggest that photoexcited holes rapidly trap to the surface of these particles and then undergo…”
Get full text
Journal Article -
19
Nonequilibrium Thermodynamics of Colloidal Gold Nanocrystals Monitored by Ultrafast Electron Diffraction and Optical Scattering Microscopy
Published in ACS nano (28-04-2020)“…Metal nanocrystals exhibit important optoelectronic and photocatalytic functionalities in response to light. These dynamic energy conversion processes have…”
Get full text
Journal Article -
20
Vanishing Confinement Regime in Terahertz HgTe Nanocrystals Studied under Extreme Conditions of Temperature and Pressure
Published in The journal of physical chemistry letters (04-08-2022)“…While HgTe nanocrystals (NCs) in the mid-infrared region have reached a high level of maturity, their far-infrared counterparts remain far less studied,…”
Get full text
Journal Article