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Sun H, Ryno S, Zhong C, Ravva MK, Sun Z, Körzdörfer T, Brédas JL. Ionization Energies, Electron Affinities, and Polarization Energies of Organic Molecular Crystals: Quantitative Estimations from a Polarizable Continuum Model (PCM)-Tuned Range-Separated Density Functional Approach. J Chem Theory Comput 2016; 12:2906-16. [DOI: 10.1021/acs.jctc.6b00225] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haitao Sun
- Solar & Photovoltaics Engineering Research Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
- State
Key Laboratory of Precision Spectroscopy, School of Physics and Materials
Science, East China Normal University (ECNU), Shanghai 200062, People’s Republic of China
| | - Sean Ryno
- Solar & Photovoltaics Engineering Research Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Cheng Zhong
- Solar & Photovoltaics Engineering Research Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mahesh Kumar Ravva
- Solar & Photovoltaics Engineering Research Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Zhenrong Sun
- State
Key Laboratory of Precision Spectroscopy, School of Physics and Materials
Science, East China Normal University (ECNU), Shanghai 200062, People’s Republic of China
| | | | - Jean-Luc Brédas
- Solar & Photovoltaics Engineering Research Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
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Tan C, Zhu G, Hojamberdiev M, Lokesh KS, Luo X, Jin L, Zhou J, Liu P. Adsorption and enhanced photocatalytic activity of the {0 0 0 1} faceted Sm-doped ZnIn2S4 microspheres. JOURNAL OF HAZARDOUS MATERIALS 2014; 278:572-583. [PMID: 25016456 DOI: 10.1016/j.jhazmat.2014.06.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 06/12/2014] [Accepted: 06/14/2014] [Indexed: 06/03/2023]
Abstract
In this study, the doping effect of samarium on the structure, morphology, adsorption and photocatalytic performance of hexagonal ZnIn2S4 microspheres was studied. The photocatalytic activity of Sm-doped ZnIn2S4 microspheres was evaluated for the photodegradation of Rhodamine B (RhB) and methyl orange (MO) under visible light irradiation. The samples were characterized by XRD, SEM, XPS, UV-vis, TEM, and N2 adsorption-desorption analysis. The results show that the hexagonal ZnIn2S4 microspheres are composed of nanoplates growing along c-axis with the predominant negative-charged S plane. Compared with the photodegadation of MO dye, the negative-charged {0 0 0 1} facets not only are beneficial for the adsorption of RhB by -N(Et)2 groups but also can accumulate the separation of photogenerated electrons and holes, enhancing photodegradation efficiency by direct-hole photocatalysis. Moreover, Sm is partially substituted for In in the crystal lattice for forming the doping energy level which promotes the separation of photoinduced electron-hole pairs and enhances absorption of visible light. Hexagonal 2% Sm-doped ZnIn2S4 microspheres with exposed {0 0 0 1} facets resulted in higher photodegradation efficiency of RhB under visible light irradiation.
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Affiliation(s)
- Congwei Tan
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, PR China
| | - Gangqiang Zhu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, PR China.
| | - Mirabbos Hojamberdiev
- Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan
| | - Koodlur Sannegowda Lokesh
- Department of Chemistry, Vijayanagara Sri Krishnadevaraya University, Jnana Sagara Campus, Bellary, Karnataka, India
| | - Xiancong Luo
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, PR China
| | - Lei Jin
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, PR China
| | - Jianping Zhou
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, PR China
| | - Peng Liu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, PR China
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Nakabayashi S, Shinozaki R, Senda Y, Yoshikawa HY. Hydrogen nanobubble at normal hydrogen electrode. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:184008. [PMID: 23598899 DOI: 10.1088/0953-8984/20/18/184008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Electrochemically formed hydrogen nanobubbles at a platinum rotating disk electrode (RDE) were detected by re-oxidation charge. The dissolution time course of the hydrogen nanobubbles was measured by AFM tapping topography under open-circuit conditions at stationary platinum and gold single-crystal electrodes. The bubble dissolution at platinum was much faster than that at gold because two types of diffusion, bulk and surface diffusion, proceeded at the platinum surface, whereas surface diffusion was prohibited at the gold electrode. These findings indicated that the electrochemical reaction of normal hydrogen electrode partly proceeded heterogeneously on the three-phase boundary around the hydrogen nanobubble.
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Affiliation(s)
- S Nakabayashi
- Department of Chemistry, Faculty of Science, Saitama University, Sakura-ku, Shimo-okubo, 225, Saitama 338-8570, Japan
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Valiyev F, Huang CW, Sheu HS, Tao YT. Organic Thin Film Transistors Based on 2,3-Dimethylpentacene and 2,3-Dimethyltetracene. J CHIN CHEM SOC-TAIP 2012. [DOI: 10.1002/jccs.201200383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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In situ measurement of exciton energy in hybrid singlet-fission solar cells. Nat Commun 2012; 3:1019. [DOI: 10.1038/ncomms2012] [Citation(s) in RCA: 157] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 07/17/2012] [Indexed: 12/23/2022] Open
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Xu Q, Hu S, Cheng D, Feng X, Han Y, Zhu J. Growth and electronic structure of Sm on thin Al2O3/Ni3Al(111) films. J Chem Phys 2012; 136:154705. [DOI: 10.1063/1.4704676] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lucas B, Trigaud T, Videlot-Ackermann C. Organic transistors and phototransistors based on small molecules. POLYM INT 2011. [DOI: 10.1002/pi.3213] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Northrop BH, Norton JE, Houk KN. On the Mechanism of Peripentacene Formation from Pentacene: Computational Studies of a Prototype for Graphene Formation from Smaller Acenes. J Am Chem Soc 2007; 129:6536-46. [PMID: 17469824 DOI: 10.1021/ja070392a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The formation of peripentacene during the high-temperature vacuum sublimation of pentacene (P) in the presence of trace amounts of 6,13-dihydropentacene (DHP) has been studied computationally with density functional theory. Computational and kinetic analyses indicate that competing mechanisms involving a series of H atom transfers initiated by hydrogen transfer from DHP to P can account for the formation of peripentacene. The overall reaction is predicted to proceed with a free energy barrier of 36.1 kcal/mol and to be autocatalytic. Kinetic modeling supports the proposed mechanism.
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Affiliation(s)
- Brian H Northrop
- Department of Chemistry and Biochemistry, University of California-Los Angeles, Los Angeles, CA 90095, USA
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Koch N, Heimel G, Wu J, Zojer E, Johnson RL, Brédas JL, Müllen K, Rabe JP. Influence of molecular conformation on organic/metal interface energetics. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.08.004] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Alagia M, Baldacchini C, Betti MG, Bussolotti F, Carravetta V, Ekström U, Mariani C, Stranges S. Core-shell photoabsorption and photoelectron spectra of gas-phase pentacene: Experiment and theory. J Chem Phys 2005; 122:124305. [PMID: 15836376 DOI: 10.1063/1.1864852] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The C K-edge photoabsorption and 1s core-level photoemission of pentacene (C22H14) free molecules are experimentally measured, and calculated by self-consistent-field and static-exchange approximation ab initio methods. Six nonequivalent C atoms present in the molecule contribute to the C 1s photoemission spectrum. The complex near-edge structures of the carbon K-edge absorption spectrum present two main groups of discrete transitions between 283 and 288 eV photon energy, due to absorption to pi* virtual orbitals, and broader structures at higher energy, involving sigma* virtual orbitals. The sharp absorption structures to the pi* empty orbitals lay well below the thresholds for the C 1s ionizations, caused by strong excitonic and localization effects. We can definitely explain the C K-edge absorption spectrum as due to both final (virtual) and initial (core) orbital effects, mainly involving excitations to the two lowest-unoccupied molecular orbitals of pi* symmetry, from the six chemically shifted C 1s core orbitals.
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Affiliation(s)
- Michele Alagia
- ISMN-CNR, Sez. Roma 1, Piazzale Aldo Moro 5, I-00185 Roma, Italy
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Chen L, Ludeke R, Cui X, Schrott AG, Kagan CR, Brus LE. Electrostatic Field and Partial Fermi Level Pinning at the Pentacene−SiO2Interface. J Phys Chem B 2005; 109:1834-8. [PMID: 16851165 DOI: 10.1021/jp046371+] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Monolayer islands of pentacene deposited on silicon substrates with thermally grown oxides were studied by electric force microscopy (EFM) and scanning Kelvin probe microscopy (SKPM) in ultrahigh vacuum (UHV) after prior 10 min exposure to atmospheric ambient. On 25-nm-thick oxides, the pentacene islands are 0.5 V higher in electrostatic potential than the silicon dioxide background because of intrinsic contact potential differences. On 2-nm-thin oxides, tunneling across the oxides allows Fermi level equilibration with pentacene associated states. The surface potential difference depends on the doping of the underlying Si substrates. The Fermi level movement at the pentacene SiO(2) interface was restricted and estimated to lie between 0.3 and 0.6 eV above the pentacene valence band maximum. It is proposed that hole traps in the pentacene or at the pentacene-oxide interface are responsible for the observations.
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Affiliation(s)
- Liwei Chen
- Department of Chemistry, Columbia University, New York, New York 10027, USA
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Bendikov M, Wudl F, Perepichka DF. Tetrathiafulvalenes, Oligoacenenes, and Their Buckminsterfullerene Derivatives: The Brick and Mortar of Organic Electronics. Chem Rev 2004; 104:4891-946. [PMID: 15535637 DOI: 10.1021/cr030666m] [Citation(s) in RCA: 1275] [Impact Index Per Article: 63.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Bendikov
- Department of Chemistry and Biochemistry and Exotic Materials Institute, University of California-Los Angeles, Los Angeles, CA 90095, USA.
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Kahn A, Koch N, Gao W. Electronic structure and electrical properties of interfaces between metals and ?-conjugated molecular films. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/polb.10642] [Citation(s) in RCA: 735] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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