1
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Jin L, Mora Perez C, Gao Y, Ma K, Park JY, Li S, Guo P, Dou L, Prezhdo O, Huang L. Superior Phonon-Limited Exciton Mobility in Lead-Free Two-Dimensional Perovskites. Nano Lett 2024; 24:3638-3646. [PMID: 38498912 DOI: 10.1021/acs.nanolett.3c04895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Tin-based two-dimensional (2D) perovskites are emerging as lead-free alternatives in halide perovskite materials, yet their exciton dynamics and transport remain less understood due to defect scattering. Addressing this, we employed temperature-dependent transient photoluminescence (PL) microscopy to investigate intrinsic exciton transport in three structurally analogous Sn- and Pb-based 2D perovskites. Employing conjugated ligands, we synthesized high-quality crystals with enhanced phase stability at various temperatures. Our results revealed phonon-limited exciton transport in Sn perovskites, with diffusion constants increasing from 0.2 cm2 s-1 at room temperature to 0.6 cm2 s-1 at 40 K, and a narrowing PL line width. Notably, Sn-based perovskites exhibited greater exciton mobility than their Pb-based equivalents, which is attributed to lighter effective masses. Thermally activated optical phonon scattering was observed in Sn-based compounds but was absent in Pb-based materials. These findings, supported by molecular dynamics simulations, demonstrate that the phonon scattering mechanism in Sn-based halide perovskites can be distinct from their Pb counterparts.
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Affiliation(s)
- Linrui Jin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Carlos Mora Perez
- Departments of Chemistry and Physics and Astronomy, University of Southern California, Los Angeles, California 90007, United States
| | - Yao Gao
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ke Ma
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Jee Yung Park
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Shunran Li
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Peijun Guo
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06516, United States
| | - Letian Dou
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Oleg Prezhdo
- Departments of Chemistry and Physics and Astronomy, University of Southern California, Los Angeles, California 90007, United States
| | - Libai Huang
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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2
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Zhou JG, Shu Y, Wang Y, Leszczynski J, Prezhdo O. Dissociation Time, Quantum Yield, and Dynamic Reaction Pathways in the Thermolysis of trans-3,4-Dimethyl-1,2-dioxetane. J Phys Chem Lett 2024; 15:1846-1855. [PMID: 38334951 PMCID: PMC10895692 DOI: 10.1021/acs.jpclett.3c03578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 01/26/2024] [Accepted: 02/06/2024] [Indexed: 02/10/2024]
Abstract
The thermolysis of trans-3,4-dimethyl-1,2-dioxetane is studied by trajectory surface hopping. The significant difference between long and short dissociation times is rationalized by frustrated dissociations and the time spent in triplet states. If the C-C bond breaks through an excited state channel, then the trajectory passes over a ridge of the potential energy surface of that state. The calculated triplet quantum yields match the experimental results. The dissociation half-times and quantum yields follow the same ascending order as per the product states, justifying the conjecture that the longer dissociation time leads to a higher quantum yield, proposed in the context of the methylation effect. The populations of the molecular Coulomb Hamiltonian and diagonal states reach equilibrium, but the triplet populations with different Sz components fluctuate indefinitely. Certain initial velocities, leading the trajectories to given product states, can be identified as the most characteristic features for sorting trajectories according to their product states.
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Affiliation(s)
- Jian-Ge Zhou
- Interdisciplinary
Nanotoxicity Center, Department of Chemistry, Physics and Atmospheric
Sciences, Jackson State University, Jackson, Mississippi 39217, United States
| | - Yinan Shu
- Department
of Chemistry and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Yuchen Wang
- Department
of Chemistry and James Franck Institute, The University of Chicago, Chicago, Illinois 60637, United States
| | - Jerzy Leszczynski
- Interdisciplinary
Nanotoxicity Center, Department of Chemistry, Physics and Atmospheric
Sciences, Jackson State University, Jackson, Mississippi 39217, United States
| | - Oleg Prezhdo
- Department
of Chemistry and Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, United States
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3
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De A, Mora Perez C, Liang A, Wang K, Dou L, Prezhdo O, Huang L. Tunneling-Driven Marcus-Inverted Triplet Energy Transfer in a Two-Dimensional Perovskite. J Am Chem Soc 2024; 146:4260-4269. [PMID: 38305175 DOI: 10.1021/jacs.4c00236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Quantum tunneling, a phenomenon that allows particles to pass through potential barriers, can play a critical role in energy transfer processes. Here, we demonstrate that the proper design of organic-inorganic interfaces in two-dimensional (2D) hybrid perovskites allows for efficient triplet energy transfer (TET), where quantum tunneling of the excitons is the key driving force. By employing temperature-dependent and time-resolved photoluminescence and pump-probe spectroscopy techniques, we establish that triplet excitons can transfer from the inorganic lead-iodide sublattices to the pyrene ligands with rapid and weakly temperature-dependent characteristic times of approximately 50 ps. The energy transfer rates obtained based on the Marcus theory and first-principles calculations show good agreement with the experiments, indicating that the efficient tunneling of triplet excitons within the Marcus-inverted regime is facilitated by high-frequency molecular vibrations. These findings offer valuable insights into how one can effectively manipulate the energy landscape in 2D hybrid perovskites for energy transfer and the creation of diverse excitonic states.
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Affiliation(s)
- Angana De
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Carlos Mora Perez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Aihui Liang
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Kang Wang
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Letian Dou
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Libai Huang
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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4
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Strandell D, Wu Y, Mora-Perez C, Prezhdo O, Kambhampati P. Breaking the Condon Approximation for Light Emission from Metal Halide Perovskite Nanocrystals. J Phys Chem Lett 2023; 14:11281-11285. [PMID: 38061060 DOI: 10.1021/acs.jpclett.3c02826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
The idea that the electronic transition dipole moment does not depend upon nuclear excursions is the Condon approximation and is central to most spectroscopy, especially in the solid state. We show a strong breakdown of the Condon approximation in the time-resolved photoluminescence from CsPbBr3 metal halide perovskite semiconductor nanocrystals. Experiments reveal that the electronic transition dipole moment increases on the 30 ps time scale due to structural dynamics in the lattice. Ab initio molecular dynamics calculations quantitatively reproduce experiments by considering excitation-induced structural dynamics.
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Affiliation(s)
- Dallas Strandell
- Department of Chemistry, McGill University, Montreal, QC H3A 0G4, Canada
| | - Yifan Wu
- Department of Chemistry, University of Southern California, Los Angeles, California 90007, United States
| | - Carlos Mora-Perez
- Department of Chemistry, University of Southern California, Los Angeles, California 90007, United States
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90007, United States
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5
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Perez CM, Ghosh D, Prezhdo O, Nie W, Tretiak S, Neukirch A. Point Defects in Two-Dimensional Ruddlesden-Popper Perovskites Explored with Ab Initio Calculations. J Phys Chem Lett 2022; 13:5213-5219. [PMID: 35670577 DOI: 10.1021/acs.jpclett.2c00575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two-dimensional Ruddlesden-Popper (RP) halide perovskites stand out as excellent layered materials with favorable optoelectronic properties for efficient light-emitting, spintronic, and other spin-related applications. However, properties often determined by defects are not well understood in these perovskite systems. This work investigates the ground state electronic structure of commonly formed defects in a typical RP perovskite structure by density functional theory. Our study reveals that these 2D perovskites generally retain their defect tolerance with limited perturbation of the electronic structure in the case of neutral-type point defects. In contrast, donor/acceptor defects induce deep midgap states, potentially causing harm to the material's electronic performance. To retain positive intrinsic properties, the halide vacancies and interstitial defects should be avoided. The observed strong electron localization results in trap states and consequently leads to reduced device performance. This understanding can guide experimental efforts that aim for improved 2D halide perovskite-based device performance.
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Affiliation(s)
- Carlos Mora Perez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Dibyajyoti Ghosh
- Department of Material Science and Engineering and Department of Chemistry, Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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6
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How WB, Wang B, Chu W, Kovalenko SM, Tkatchenko A, Prezhdo O. Dimensionality Reduction in Machine Learning for Nonadiabatic Molecular Dynamics: Effectiveness of Elemental Sublattices in Lead Halide Perovskites. J Chem Phys 2022; 156:054110. [DOI: 10.1063/5.0078473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Wei Bin How
- Chemistry, Nanyang Technological University School of Physical and Mathematical Sciences, Singapore
| | - Bipeng Wang
- University of Southern California, United States of America
| | - Weibin Chu
- Chemistry, University of Southern California, United States of America
| | | | | | - Oleg Prezhdo
- Chemistry, University of Southern California, United States of America
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Abstract
Shear flows play critical roles in biological systems and technological applications and are achieved experimentally using moving parts. However, when the system size is reduced to micro- and nanoscale, fabrication of moving parts becomes exceedingly challenging. We demonstrate that a heterogeneous nanochannel composed of two parallel walls with different wetting behaviors can generate shear flow without moving parts. Molecular dynamics simulations show that shear flows can be formed inside such a nanochannel under a temperature gradient. The physical origin is that thermo-osmosis velocities with different rates and directions can be tuned by wetting behaviors. Our analysis reveals that thermo-osmosis is governed by surface excess enthalpy and nanoscale interfacial hydrodynamics. This finding provides an efficient method of generating controllable shear flows at micro- and nanoscale confinement. It also demonstrates the feasibility of using fluids to drive micromechanical elements via shear torques generated by harvesting energy from temperature differences.
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Affiliation(s)
- Xin Wang
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Maochang Liu
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
- Suzhou Academy of Xi'an Jiaotong University, Suzhou, Jiangsu 215123, China
| | - Dengwei Jing
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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8
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Hu M, Zhu Q, Zhao Y, Zhang G, Zou C, Prezhdo O, Jiang J. Facile Removal of Bulk Oxygen Vacancy Defects in Metal Oxides Driven by Hydrogen-Dopant Evaporation. J Phys Chem Lett 2021; 12:9579-9583. [PMID: 34582204 DOI: 10.1021/acs.jpclett.1c02687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Oxygen vacancy is a common defect in metal oxides that causes appreciable damage to material properties and performance. Removing bulk defects of oxygen vacancy (VO) typically needs harsh conditions such as high-temperature annealing. Supported by first-principles simulations, we propose an effective strategy of removing VO bulk defects in metal oxides by evaporating hydrogen dopants. The hydrogen dopants not only lower the migration barrier of VO but also push VO away due to their repulsive interaction. The coevaporation mechanism was supported by a neural networks potential-based molecular dynamics simulation, which shows that the migration of hydrogen dopants from inside to surface at 400 K promotes the migration of VO as well. Our proof-of-concept study suggests an alternative and efficient way of modulating oxygen vacancies in metal oxides via reversible hydrogen doping.
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Affiliation(s)
- Min Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Qing Zhu
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yuan Zhao
- School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, P. R. China
| | - Guozhen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Chongwen Zou
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Jun Jiang
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Collaborative Innovation Center of Chemistry for Energy Materials, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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9
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Perez CM, Ghosh D, Prezhdo O, Tretiak S, Neukirch AJ. Excited-State Properties of Defected Halide Perovskite Quantum Dots: Insights from Computation. J Phys Chem Lett 2021; 12:1005-1011. [PMID: 33470811 DOI: 10.1021/acs.jpclett.0c03317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
CsPbBr3 quantum dots (QDs) have been recently suggested for their application as bright green light-emitting diodes (LEDs); however, their optical properties are yet to be fully understood and characterized. In this work, we utilize time-dependent density functional theory to analyze the ground and excited states of the CsPbBr3 clusters in the presence of various low formation energy vacancy defects. Our study finds that the QD perovskites retain their defect tolerance with limited perturbance to the simulated UV-vis spectra. The exception to this general trend is that Br vacancies must be avoided, as they cause molecular orbital localization, resulting in trap states and lower LED performance. Blinking will likely still plague CsPbBr3 QDs, given that the charged defects critically perturb the spectra via red-shifting and lower absorbance. Our study provides insight into the tunability of CsPbBr3 QDs optical properties by understanding the nature of the electronic excitations and guiding improved development for high-performance LEDs.
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Affiliation(s)
- Carlos Mora Perez
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Dibyajyoti Ghosh
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Sergei Tretiak
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Amanda J Neukirch
- Theoretical Physics and Chemistry of Materials, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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10
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Abstract
Thermo-osmosis driven by temperature gradients generally requires two liquid reservoirs at different temperatures connected by porous bodies or capillaries. We demonstrate, by molecular dynamics simulation, a new phenomenon toward nanoscale thermo-osmosis. Upon heating at a certain region of a nanochannel, multiple nanoscale convective layers are formed and can be manipulated to generate a net fluid transport from one reservoir to another, even without a temperature difference between them. A net unidirectional fluid transport with different rates can be achieved by precisely controlling location of the heated region. The net fluid transport can be enhanced further by tuning liquid-wall interactions. The demonstrated phenomenon provides a strategy for enhancing fluid mixing, which is often inefficient in nanoscale flows. Our finding is promising for chip-level cooling. The heat generated by chips can be employed to produce asymmetric temperature gradients in channels through proper configuration. Coolant liquids can thus be circulated without extra pumps.
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Affiliation(s)
- Xin Wang
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University Xi'an 710049, China
| | - Maochang Liu
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University Xi'an 710049, China
| | - Dengwei Jing
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University Xi'an 710049, China
| | - Abdulmajeed Mohamad
- Schulich School of Engineering, CEERE, The University of Calgary, Calgary, Alberta T2N1N4, Canada
| | - Oleg Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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11
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Wang T, Jin L, Hidalgo J, Chu W, Snaider JM, Deng S, Zhu T, Lai B, Prezhdo O, Correa-Baena JP, Huang L. Protecting hot carriers by tuning hybrid perovskite structures with alkali cations. Sci Adv 2020; 6:6/43/eabb1336. [PMID: 33097534 PMCID: PMC7608821 DOI: 10.1126/sciadv.abb1336] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 09/11/2020] [Indexed: 05/19/2023]
Abstract
Successful implementation of hot carrier solar cells requires preserving high carrier temperature as carriers migrate through the active layer. Here, we demonstrated that addition of alkali cations in hybrid organic-inorganic lead halide perovskites led to substantially elevated carrier temperature, reduced threshold for phonon bottleneck, and enhanced hot carrier transport. The synergetic effects from the Rb, Cs, and K cations result in ~900 K increase in the effective carrier temperature at a carrier density around 1018 cm-3 with an excitation 1.45 eV above the bandgap. In the doped thin films, the protected hot carriers migrate 100 s of nanometers longer than the undoped sample as imaged by ultrafast microscopy. We attributed these improvements to the relaxation of lattice strain and passivation of halide vacancies by alkali cations based on x-ray structural characterizations and first principles calculations.
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Affiliation(s)
- Ti Wang
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Linrui Jin
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Juanita Hidalgo
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Weibin Chu
- Departments of Chemistry and Physics and Astronomy, University of Southern California, Los Angeles, CA 90007, USA
| | - Jordan M Snaider
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Shibin Deng
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Tong Zhu
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
- Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Beijing 100081, China
| | - Barry Lai
- Advanced Photon Source, Argonne National Laboratory, 9700 Cass Ave., Lemont, IL 60439, USA
| | - Oleg Prezhdo
- Departments of Chemistry and Physics and Astronomy, University of Southern California, Los Angeles, CA 90007, USA
| | - Juan-Pablo Correa-Baena
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Libai Huang
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA.
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12
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Abstract
Controversies on the surface termination of α-Fe2O3 (0001) focus on its surface stoichiometry dependence on the oxygen chemical potential. Density functional theory (DFT) calculations applying the commonly accepted Perdew-Burke-Ernzerhof (PBE) exchange-correlation functional to a strongly correlated system predict the best matching surface termination, but would produce a delocalization error, resulting in an inappropriate bandgap, and thus are not applicable for comprehensive hematite system studies. Besides, the widely applied PBE+U scheme cannot provide evidence for existence of some of the successfully synthesized stoichiometric α-Fe2O3 (0001) surfaces. Hence, a better scheme is needed for hematite DFT studies. This work investigates whether the strongly constrained and appropriately normed (SCAN) approximation reported by Perdew et al. could provide an improved result for the as-mentioned problem, and whether SCAN can be applied to hematite systems. By comparing the results calculated with the PBE, SCAN, PBE+U, and SCAN+U schemes, we find that SCAN and SCAN+U improves the description of the electronic structure of different stoichiometric α-Fe2O3 (0001) surfaces with respect to the PBE results, and that they give a consistent prediction of the surface terminations. Besides, the bulk lattice constants and the bulk density of states are also improved with the SCAN functional. This study provides a general characterization of the α-Fe2O3 (0001) surfaces and rationalizes how the SCAN approximation improves the results of hematite surface calculations.
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Affiliation(s)
- Yitao Si
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Mingtao Li
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Zhaohui Zhou
- Chemical Engineering and Technology, School of Environmental Science and Engineering, Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an 710064, China
| | - Maochang Liu
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
| | - Oleg Prezhdo
- Deparment of Chemistry, University of Southern California, Los Angeles, California 90089, USA
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13
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Schatz GC, McCoy AB, Shea JE, Murphy CJ, Scholes G, Batista V, Bhattacharyya K, Bisquert J, Crawford D, Cuk T, Dickson R, Fairbrother H, Forsyth M, Fourkas J, Geiger F, Gewirth A, Goodson T, Goward GR, Guo H, Hartland GV, Jungwirth P, Link S, Liu GY, Liu ZP, Mennucci B, Minton T, Mullin AS, Prezhdo O, Schneider WF, Schwartz B, Snider N, Solomon G, Weitz E, Yang X, Yethiraj A, Zaera F, Zanni M, Zhang J, Zhong H, Zwier T. The JPC Periodic Table. J Phys Chem B 2019; 123:5973-5984. [DOI: 10.1021/acs.jpcb.9b03463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Schatz GC, McCoy AB, Shea JE, Murphy CJ, Scholes G, Batista V, Bhattacharyya K, Bisquert J, Crawford D, Cuk T, Dickson R, Fairbrother H, Forsyth M, Fourkas J, Geiger F, Gewirth A, Goodson T, Goward GR, Guo H, Hartland GV, Jungwirth P, Link S, Liu GY, Liu ZP, Mennucci B, Minton T, Mullin AS, Prezhdo O, Schneider WF, Schwartz B, Snider N, Solomon G, Weitz E, Yang X, Yethiraj A, Zaera F, Zanni M, Zhang J, Zhong H, Zwier T. The JPC Periodic Table. J Phys Chem A 2019; 123:5837-5848. [PMID: 31315402 DOI: 10.1021/acs.jpca.9b03461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Scholes GD, Schatz GC, Bisquert J, Forsyth M, Mennucci B, Prezhdo O, Zaera F, Zwier T, Zhang J. JPCL: A Dynamic Journal with a Global Reach. J Phys Chem Lett 2019; 10:113-114. [PMID: 30985143 DOI: 10.1021/acs.jpclett.8b03623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | - Jin Zhang
- University of California , Santa Cruz
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16
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Scholes GD, Bisquert J, Forsyth M, Mennucci B, Prezhdo O, Zaera F, Zwier T, Schatz GC. Editorial: 2017 in Perspective. J Phys Chem Lett 2018; 9:138-140. [PMID: 30985123 DOI: 10.1021/acs.jpclett.7b03309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
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Scholes GD, Bisquert J, Mennucci B, Prezhdo O, Zaera F, Zwier T, Schatz GC. The JPCL New Year's Editorial. J Phys Chem Lett 2017; 8:41. [PMID: 28052678 DOI: 10.1021/acs.jpclett.6b02781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Gelin M, Tretiak S, Prezhdo O. Quantum Dynamics and Femtosecond Spectroscopy (in honor of Professor Vladimir Y. Chernyak on the occasion of his 60th birthday). Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Gelin MF, Tretiak S, Prezhdo O, Mukamel S. WITHDRAWN: Quantum Dynamics and Femtosecond Spectroscopy. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.11.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sowers KL, Hou Z, Peterson JJ, Swartz B, Pal S, Prezhdo O, Krauss TD. Photophysical Properties of CdSe/CdS core/shell quantum dots with tunable surface composition. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2015.09.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kamat PV, Mennucci B, Prezhdo O, Scholes G, Zaera F, Zwier T, Schatz GC. Reaching Out with Physical Chemistry. J Phys Chem Lett 2016; 7:103-104. [PMID: 26740142 DOI: 10.1021/acs.jpclett.5b02734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Prezhdo V, Olan K, Prezhdo O, Zubkova V. Vapor-phase molar Kerr constant values from solution measurements. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Affiliation(s)
- Prashant V Kamat
- University of Notre Dame
- University of Rochester
- University of California, Santa Barbara
- University of Toronto
- University of California, Riverside
- Purdue University
- Northwestern UniversityEditors, J. Phys. Chem. Lett
| | - Oleg Prezhdo
- University of Notre Dame
- University of Rochester
- University of California, Santa Barbara
- University of Toronto
- University of California, Riverside
- Purdue University
- Northwestern UniversityEditors, J. Phys. Chem. Lett
| | - Joan-Emma Shea
- University of Notre Dame
- University of Rochester
- University of California, Santa Barbara
- University of Toronto
- University of California, Riverside
- Purdue University
- Northwestern UniversityEditors, J. Phys. Chem. Lett
| | - Gregory Scholes
- University of Notre Dame
- University of Rochester
- University of California, Santa Barbara
- University of Toronto
- University of California, Riverside
- Purdue University
- Northwestern UniversityEditors, J. Phys. Chem. Lett
| | - Francisco Zaera
- University of Notre Dame
- University of Rochester
- University of California, Santa Barbara
- University of Toronto
- University of California, Riverside
- Purdue University
- Northwestern UniversityEditors, J. Phys. Chem. Lett
| | - Timothy Zwier
- University of Notre Dame
- University of Rochester
- University of California, Santa Barbara
- University of Toronto
- University of California, Riverside
- Purdue University
- Northwestern UniversityEditors, J. Phys. Chem. Lett
| | - George C Schatz
- University of Notre Dame
- University of Rochester
- University of California, Santa Barbara
- University of Toronto
- University of California, Riverside
- Purdue University
- Northwestern UniversityEditors, J. Phys. Chem. Lett
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Kamat PV, Scholes G, Prezhdo O, Zaera F, Zwier T, Schatz GC. Overcoming the Myths of the Review Process and Getting Your Paper Ready for Publication. J Phys Chem Lett 2014; 5:896-899. [PMID: 26274085 DOI: 10.1021/jz500162r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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Igumenshchev K, Ovchinnikov M, Maniadis P, Prezhdo O. Signatures of discrete breathers in coherent state quantum dynamics. J Chem Phys 2013; 138:054104. [PMID: 23406095 DOI: 10.1063/1.4788618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In classical mechanics, discrete breathers (DBs) - a spatial time-periodic localization of energy - are predicted in a large variety of nonlinear systems. Motivated by a conceptual bridging of the DB phenomena in classical and quantum mechanical representations, we study their signatures in the dynamics of a quantum equivalent of a classical mechanical point in phase space - a coherent state. In contrast to the classical point that exhibits either delocalized or localized motion, the coherent state shows signatures of both localized and delocalized behavior. The transition from normal to local modes have different characteristics in quantum and classical perspectives. Here, we get an insight into the connection between classical and quantum perspectives by analyzing the decomposition of the coherent state into system's eigenstates, and analyzing the spacial distribution of the wave-function density within these eigenstates. We find that the delocalized and localized eigenvalue components of the coherent state are separated by a mixed region, where both kinds of behavior can be observed. Further analysis leads to the following observations. Considered as a function of coupling, energy eigenstates go through avoided crossings between tunneling and non-tunneling modes. The dominance of tunneling modes in the high nonlinearity region is compromised by the appearance of new types of modes - high order tunneling modes - that are similar to the tunneling modes but have attributes of non-tunneling modes. Certain types of excitations preferentially excite higher order tunneling modes, allowing one to study their properties. Since auto-correlation functions decrease quickly in highly nonlinear systems, short-time dynamics are sufficient for modeling quantum DBs. This work provides a foundation for implementing modern semi-classical methods to model quantum DBs, bridging classical and quantum mechanical signatures of DBs, and understanding spectroscopic experiments that involve a coherent state.
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Affiliation(s)
- Kirill Igumenshchev
- Department of Chemistry, University of Rochester, Rochester, New York 14627, USA.
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Igumenshchev K, Prezhdo O. Quantized Hamilton dynamics describes quantum discrete breathers in a simple way. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 84:026616. [PMID: 21929137 DOI: 10.1103/physreve.84.026616] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 06/17/2011] [Indexed: 05/31/2023]
Abstract
We study the localization of energy in a nonlinear coupled system, exhibiting so-called breather modes, using quantized Hamilton dynamics (QHD). Already at the lowest order, which is only twice as complex as classical mechanics, this simple semiclassical method incorporates quantum-mechanical effects. The transition between the localized and delocalized regimes is instantaneous in classical mechanics, while it is gradual due to tunneling in both quantum mechanics and QHD. In contrast to classical mechanics, which predicts an abrupt appearance of breathers, quantum mechanics and QHD show an alternation of localized and delocalized behavior in the transient region. QHD includes zero-point energy that is reflected in a shifted energy asymptote for the localized states, providing another improvement on the classical perspective. By detailed analysis of the distribution and transfer of energy within classical mechanics, QHD, and quantum dynamics, we conclude that QHD is an efficient approach that accounts for moderate quantum effects and can be used to identify quantum breathers in large nonlinear systems.
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Affiliation(s)
- Kirill Igumenshchev
- Department of Chemistry, University of Rochester, Rochester, New York 14627, USA.
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Pereverzev Y, Prezhdo O. Theoretical Models of the Biological Catch-Bond. Biophys J 2010. [DOI: 10.1016/j.bpj.2009.12.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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McBee JK, Kuksa V, Alvarez R, de Lera AR, Prezhdo O, Haeseleer F, Sokal I, Palczewski K. Isomerization of all-trans-retinol to cis-retinols in bovine retinal pigment epithelial cells: dependence on the specificity of retinoid-binding proteins. Biochemistry 2000; 39:11370-80. [PMID: 10985782 PMCID: PMC1408314 DOI: 10.1021/bi001061c] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the retinal rod and cone photoreceptors, light photoactivates rhodopsin or cone visual pigments by converting 11-cis-retinal to all-trans-retinal, the process that ultimately results in phototransduction and visual sensation. The production of 11-cis-retinal in adjacent retinal pigment epithelial (RPE) cells is a fundamental process that allows regeneration of the vertebrate visual system. Here, we present evidence that all-trans-retinol is unstable in the presence of H(+) and rearranges to anhydroretinol through a carbocation intermediate, which can be trapped by alcohols to form retro-retinyl ethers. This ability of all-trans-retinol to form a carbocation could be relevant for isomerization. The calculated activation energy of isomerization of all-trans-retinyl carbocation to the 11-cis-isomer was only approximately 18 kcal/mol, as compared to approximately 36 kcal/mol for all-trans-retinol. This activation energy is similar to approximately 17 kcal/mol obtained experimentally for the isomerization reaction in RPE microsomes. Mass spectrometric (MS) analysis of isotopically labeled retinoids showed that isomerization proceeds via alkyl cleavage mechanism, but the product of isomerization depended on the specificity of the retinoid-binding protein(s) as evidenced by the production of 13-cis-retinol in the presence of cellular retinoid-binding protein (CRBP). To test the influence of an electron-withdrawing group on the polyene chain, which would inhibit carbocation formation, 11-fluoro-all-trans-retinol was used in the isomerization assay and was shown to be inactive. Together, these results strengthen the idea that the isomerization reaction is driven by mass action and may occur via carbocation intermediate.
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Affiliation(s)
| | | | | | | | | | | | | | - Krzysztof Palczewski
- * To whom correspondence should be addressed. Krzysztof Palczewski, Ph.D., University of Washington School of Medicine, Department of Ophthalmology, Box 356485, Seattle, WA 98195-6485. Phone: 206-543-9074; fax: 206-221-6784; e-mail:
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Stecher H, Prezhdo O, Das J, Crouch RK, Palczewski K. Isomerization of all-trans-9- and 13-desmethylretinol by retinal pigment epithelial cells. Biochemistry 1999; 38:13542-50. [PMID: 10521261 DOI: 10.1021/bi9913294] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photoisomerization of 11-cis-retinal to all-trans-retinal triggers phototransduction in the retinal photoreceptor cells and causes ultimately the sensation of vision. 11-cis-Retinal is enzymatically regenerated through a complex set of reactions in adjacent retinal pigment epithelial cells (RPE). In this study using all-trans-9-desmethylretinol (lacking the C(19) methyl group) and all-trans-13-desmethylretinol (lacking the C(20) methyl group), we explored the effects of C(19) and C(20) methyl group removals on isomerization of these retinols in RPE microsomes. The C(19) methyl group may be involved in the substrate activation, whereas the C(20) methyl group causes steric hindrance with a proton in position C(10) of 11-cis-retinol; thus, removal of this group could accelerate isomerization. We found that all-trans-9-desmethylretinol and all-trans-13-desmethylretinol are isomerized to their corresponding 11-cis-alcohols, although with lower efficiencies than isomerization of all-trans-retinol to 11-cis-retinol. These findings make the mechanism of isomerization through the C(19) methyl group unlikely, because in the case of 9-desmethylretinol, the isomerization would have to progress by proton abstraction from electron-rich olefinic C(9). The differences between all-trans-retinol, all-trans-9-desmethylretinol, and all-trans-13-desmethylretinol appear to be a consequence of the enzymatic properties, and binding affinities of the isomerization system, rather than differences in the chemical or thermodynamic properties of these compounds. This observation is also supported by quantum chemical calculations. It appears that both methyl groups are not essential for the isomerization reaction and are not likely involved in formation of a transition stage during the isomerization process.
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Affiliation(s)
- H Stecher
- Department of Ophthalmology, University of Washington, Seattle 98195, USA
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Prezhdo V, Prezhdo O, Vaschenko E. Proton Acceptor Ability of the Compounds Containing SO and SO 2Groups. PHOSPHORUS SULFUR 1994. [DOI: 10.1080/10426509408034258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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