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do Casal MT, Toldo JM, Plasser F, Barbatti M. Using diketopyrrolopyrroles to stabilize double excitation and control internal conversion. Phys Chem Chem Phys 2022; 24:23279-23288. [PMID: 36164816 DOI: 10.1039/d2cp03533b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diketopyrrolopyrrole (DPP) is a pivotal functional group to tune the physicochemical properties of novel organic photoelectronic materials. Among multiple uses, DPP-thiophene derivatives forming a dimer through a vinyl linker were recently shown to quench the fluorescence observed in their isolated monomers. Here, we explain this fluorescence quenching using computational chemistry. The DPP-thiophene dimer has a low-lying doubly excited state that is not energetically accessible for the monomer. This state delays the fluorescence allowing internal conversion to occur first. We characterize the doubly excited state wavefunction by systematically changing the derivatives to tune the π-scaffold size and the acceptor and donor characters. The origin of this state's stabilization is related to the increase in the π-system and not to the charge-transfer features. This analysis delivers core conceptual information on the electronic properties of organic chromophores arranged symmetrically around a vinyl linker, opening new ways to control the balance between luminescence and internal conversion.
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Affiliation(s)
| | | | | | - Mario Barbatti
- Aix Marseille University, CNRS, ICR, Marseille, France. .,Institut Universitaire de France, 75231, Paris, France
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2
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Manna S, Chaudhuri RK, Chattopadhyay S. Taming the excited states of butadiene, hexatriene, and octatetraene using state specific multireference perturbation theory with density functional theory orbitals. J Chem Phys 2020; 152:244105. [DOI: 10.1063/5.0007198] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Shovan Manna
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | | | - Sudip Chattopadhyay
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
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3
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Rabidoux SM, Cave RJ, Stanton JF. Nonadiabatic Investigation of the Electronic Spectroscopy of trans-1,3-Butadiene. J Phys Chem A 2019; 123:3255-3271. [DOI: 10.1021/acs.jpca.9b01021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Scott M. Rabidoux
- Institute for Computational Engineering and Sciences, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Robert J. Cave
- Department of Chemistry, Harvey Mudd College, 241 Platt Boulevard, Claremont, California 91711, United States
| | - John F. Stanton
- Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Avenue, Austin, Texas 78712, United States
- The Department of Chemistry, The University of Florida, Gainesville, Florida 32611, United States
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5
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Shu Y, Truhlar DG. Doubly Excited Character or Static Correlation of the Reference State in the Controversial 21Ag State of trans-Butadiene? J Am Chem Soc 2017; 139:13770-13778. [DOI: 10.1021/jacs.7b06283] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yinan Shu
- Department of Chemistry,
Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Donald G. Truhlar
- Department of Chemistry,
Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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6
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Komainda A, Ostojić B, Köppel H. Ab Initio Quantum Study of Nonadiabatic S1–S2 Photodynamics of s-trans-Butadiene. J Phys Chem A 2013; 117:8782-93. [DOI: 10.1021/jp404340m] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. Komainda
- Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld
229, D-69120 Heidelberg, Germany
| | - B. Ostojić
- Institute of Chemistry, Technology
and Metallurgy, University of Belgrade,
Studentski trg 14-16, 11 000 Belgrade, Serbia
| | - H. Köppel
- Physikalisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld
229, D-69120 Heidelberg, Germany
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7
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Daday C, Smart S, Booth GH, Alavi A, Filippi C. Full Configuration Interaction Excitations of Ethene and Butadiene: Resolution of an Ancient Question. J Chem Theory Comput 2012; 8:4441-51. [DOI: 10.1021/ct300486d] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Csaba Daday
- MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede,
The Netherlands
| | - Simon Smart
- University of Cambridge, Chemistry Department, Lensfield
Road, Cambridge CB2 1EW, United
Kingdom
| | - George H. Booth
- University of Cambridge, Chemistry Department, Lensfield
Road, Cambridge CB2 1EW, United
Kingdom
| | - Ali Alavi
- University of Cambridge, Chemistry Department, Lensfield
Road, Cambridge CB2 1EW, United
Kingdom
| | - Claudia Filippi
- MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede,
The Netherlands
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8
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König C, Neugebauer J. Quantum chemical description of absorption properties and excited-state processes in photosynthetic systems. Chemphyschem 2011; 13:386-425. [PMID: 22287108 DOI: 10.1002/cphc.201100408] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Indexed: 11/07/2022]
Abstract
The theoretical description of the initial steps in photosynthesis has gained increasing importance over the past few years. This is caused by more and more structural data becoming available for light-harvesting complexes and reaction centers which form the basis for atomistic calculations and by the progress made in the development of first-principles methods for excited electronic states of large molecules. In this Review, we discuss the advantages and pitfalls of theoretical methods applicable to photosynthetic pigments. Besides methodological aspects of excited-state electronic-structure methods, studies on chlorophyll-type and carotenoid-like molecules are discussed. We also address the concepts of exciton coupling and excitation-energy transfer (EET) and compare the different theoretical methods for the calculation of EET coupling constants. Applications to photosynthetic light-harvesting complexes and reaction centers based on such models are also analyzed.
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Affiliation(s)
- Carolin König
- Institute for Physical and Theoretical Chemistry, Technical University Braunschweig, Braunschweig, Germany
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9
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Peng Q, Niu Y, Wang Z, Jiang Y, Li Y, Liu Y, Shuai Z. Theoretical predictions of red and near-infrared strongly emitting X-annulated rylenes. J Chem Phys 2011; 134:074510. [PMID: 21341862 PMCID: PMC3071303 DOI: 10.1063/1.3549143] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 01/07/2011] [Indexed: 12/22/2022] Open
Abstract
The optical properties of rylenes are extremely interesting because their emission colors can be tuned from blue to near-infrared by simply elongating the chain length. However, for conjugated chains, the dipole-allowed odd-parity 1B(u) excited state often lies above the dipole-forbidden even-parity 2A(g) state as the chain length increases, thus preventing any significant luminescence according to Kasha's rule. We systemically investigated the 1B(u)∕2A(g) crossover behaviors with respect to the elongating rylene chain length with various quantum chemistry approaches, such as time-depended density functional theory (TDDFT), complete active space self-consistent field theory (CASSCF∕CASPT2), multireference configuration interaction (MRCI)∕Zerner's intermediate neglect of diatomic overlap (ZINDO), and MRCI∕modified neglect of differential overlap. The calculated results by CASSCF∕CASPT2 and MRCI∕ZINDO are completely coherent: the optical active 1B(u) state lies below the dark B(3g) or 2A(g) state for perylene and terrylene, which results in strong fluorescence; while a crossover to S(1) = 2A(g) occurs and leads to much weaker fluorescence for quaterrylene. Then we put forward a molecular design rule on how to recover fluorescence for the longer rylenes by introducing heteroatom bridges. Several heteroatom-annulated rylenes are designed theoretically, which are predicted to be strongly emissive in the red and near-infrared ranges. These are further confirmed by theoretical emission spectra as well as radiative and nonradiative decay rate calculations by using the vibration correlation function formalisms we developed earlier coupled with TDDFT.
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Affiliation(s)
- Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China
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10
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Palmer MH, Walker IC. The electronic states of buta-1,3-diene studied by ab initio configuration interaction and DFT methods, and electron energy loss spectroscopy. Chem Phys 2010. [DOI: 10.1016/j.chemphys.2010.04.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Mizukami W, Kurashige Y, Ehara M, Yanai T, Itoh T. Ab initiostudy of the excited singlet states of all-transα,ω-diphenylpolyenes with one to seven polyene double bonds: Simulation of the spectral data within Franck–Condon approximation. J Chem Phys 2009; 131:174313. [DOI: 10.1063/1.3261729] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Levine BG, Martínez TJ. Ab Initio Multiple Spawning Dynamics of Excited Butadiene: Role of Charge Transfer. J Phys Chem A 2009; 113:12815-24. [DOI: 10.1021/jp907111u] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Benjamin G. Levine
- Department of Chemistry and The Beckman Institute, University of Illinois, Urbana, Illinois 61801
| | - Todd J. Martínez
- Department of Chemistry and The Beckman Institute, University of Illinois, Urbana, Illinois 61801
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Marian CM, Gilka N. Performance of the Density Functional Theory/Multireference Configuration Interaction Method on Electronic Excitation of Extended π-Systems. J Chem Theory Comput 2008; 4:1501-15. [DOI: 10.1021/ct8001738] [Citation(s) in RCA: 151] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christel M. Marian
- Institute of Theoretical and Computational Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraβe 1, 40225 Düsseldorf, Germany
| | - Natalie Gilka
- Institute of Theoretical and Computational Chemistry, Heinrich-Heine-University Düsseldorf, Universitätsstraβe 1, 40225 Düsseldorf, Germany
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14
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Kachkovskii AD. The nature of electronic transitions in linear conjugated systems. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1997v066n08abeh000274] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Boggio-Pasqua M, Robb MA, Bearpark MJ. Photostability via a Sloped Conical Intersection: A CASSCF and RASSCF Study of Pyracylene. J Phys Chem A 2005; 109:8849-56. [PMID: 16834288 DOI: 10.1021/jp053354r] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An extensive ab initio study of the ground- and excited-state potential energy surfaces of pyracylene is presented in this work. CASSCF calculations show that there is an accessible sloped S0/S1 conical intersection, which leads to ultrafast internal conversion and explains the observed photostability. RASSCF calculations (using a well-defined subset of the CASSCF configurations) are shown to be able to reproduce CASSCF results satisfactorily and will therefore be useful for larger systems where CASSCF is currently too expensive. MRCI and MRPT2 energy corrections are computed to assess the ionic character of the excited states. Finally, MMVB calculations are also benchmarked against CASSCF, to assess the reliability of this parametrized method for excited states of large conjugated polycyclic aromatic hydrocarbons.
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Affiliation(s)
- Martial Boggio-Pasqua
- Chemistry Department, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
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16
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Ma H, Liu C, Jiang Y. Theoretical study of the lowest π→π* excitation energies for neutral and doped polyenes. J Chem Phys 2005; 123:084303. [PMID: 16164287 DOI: 10.1063/1.2007589] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In earlier theoretical studies, it has been widely noticed that the electron correlation effect played an important role in determining the excitation energies of low-lying pi-->pi(*) excited states for neutral polyenes and their radical cations and dications. In this paper, neutral and doped polyene oligomers of medium to large sizes are investigated with the Pariser-Parr-Pople model, and the pi-electron correlation effect is fully taken into consideration by virtue of the density-matrix renormalization group method. The excitation properties in the polymer limit are also obtained by exponential extrapolation from the finite oligomers. The reasonable agreement of our results with the available experimental observations and advanced ab initio calculations is witnessed. It is also observed that while charge doping can significantly lower the exciting energy, the odd-charged oligomers show lower excitation energies than the even-charged ones.
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Affiliation(s)
- Haibo Ma
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of the Ministry of Education (MOE), Department of Chemistry, Nanjing University, Nanjing, 210093, China
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17
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Boggio-Pasqua M, Bearpark MJ, Klene M, Robb MA. A computational strategy for geometry optimization of ionic and covalent excited states, applied to butadiene and hexatriene. J Chem Phys 2004; 120:7849-60. [PMID: 15267700 DOI: 10.1063/1.1690756] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We propose a computational strategy that enables ionic and covalent pipi* excited states to be described in a balanced way. This strategy depends upon (1) the restricted active space self-consistent field method, in which the dynamic correlation between core sigma and valence pi electrons can be described by adding single sigma excitations to all pi configurations and (2) the use of a new conventional one-electron basis set specifically designed for the description of valence ionic states. Together, these provide excitation energies comparable with more accurate and expensive ab initio methods--e.g., multiconfigurational second-order perturbation theory and multireference configuration interaction. Moreover, our strategy also allows full optimization of excited-state geometries--including conical intersections between ionic and covalent excited states--to be routinely carried out, thanks to the availability of analytical energy gradients. The prototype systems studied are the cis and trans isomers of butadiene and hexatriene, for which the ground 1A(1/g), lower-lying dark (i.e., symmetry forbidden covalent) 2A(1/g) and spectroscopic 1B(2/u) (valence ionic) states were investigated.
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Affiliation(s)
- Martial Boggio-Pasqua
- Department of Chemistry, Imperial College London, South Kensington campus, London SW7 2AZ, United Kingdom
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18
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CABRERO JESÚS, CABALLOL ROSA, MALRIEU JEANPAUL. Efficiency of a controlled use of Davidson's correction for the calculation of excitation energies: vertical spectrum oftrans-butadiene. Mol Phys 2002. [DOI: 10.1080/00268970110105433] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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19
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DAVIDSON ERNESTR. Biography. Mol Phys 2002. [DOI: 10.1080/00268970110075149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Woywod C, Snyder JA, Frederick JH. Out-of-Plane Modes of cis-1,3,5-Hexatriene: Frequency Shifts in the 2A1 and 11B1 Excited States. J Phys Chem A 2001. [DOI: 10.1021/jp0038254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Clemens Woywod
- Department of Chemistry and Program in Chemical Physics, University of Nevada, Reno, Nevada 89557-0020
| | - James A. Snyder
- Department of Chemistry and Program in Chemical Physics, University of Nevada, Reno, Nevada 89557-0020
| | - John H. Frederick
- Department of Chemistry and Program in Chemical Physics, University of Nevada, Reno, Nevada 89557-0020
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21
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Woywod C, Livingood WC, Frederick JH. S1–S2 vibronic coupling incis-1,3,5-hexatriene. I. Electronic structure calculations. J Chem Phys 2001. [DOI: 10.1063/1.1333708] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Woywod C, Livingood WC, Frederick JH. S1–S2 vibronic coupling in trans-1,3,5-hexatriene. I. Electronic structure calculations. J Chem Phys 2000. [DOI: 10.1063/1.480553] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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23
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Lappe J, Cave RJ. On the Vertical and Adiabatic Excitation Energies of the 2Ag State of trans-1,3-Butadiene. J Phys Chem A 1999. [DOI: 10.1021/jp992518z] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jason Lappe
- Department of Chemistry, Harvey Mudd College, Claremont, California 91711
| | - Robert J. Cave
- Department of Chemistry, Harvey Mudd College, Claremont, California 91711
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24
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Nakayama K, Hirao K, Lindh R. Different bases for different correlation effects: multireference Møller–Plesset perturbation theory in the extended basis function space. Chem Phys Lett 1999. [DOI: 10.1016/s0009-2614(98)01371-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Hawi SR, Wright JC. Multiresonant four‐wave mixing in diphenyloctatetraene doped bibenzyl crystals. J Chem Phys 1995. [DOI: 10.1063/1.469803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Albert IDL, Morley JO, Pugh D. A πCI approach to the study of correlation effects on the nonlinear‐optical properties in organic π‐conjugated systems. J Chem Phys 1995. [DOI: 10.1063/1.469396] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Grimme S. MRD-CI studies of vertical excitation energies of unsaturated hydrocarbon molecules. J Comput Chem 1994. [DOI: 10.1002/jcc.540150406] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Kovár̆ T, Lischka H. Structure and harmonic vibrational frequencies of cyclopentadiene in the lowest singlet states. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0166-1280(94)80175-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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29
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Soliton Dynamics in trans-Polyacetylene. ADVANCES IN QUANTUM CHEMISTRY 1994. [DOI: 10.1016/s0065-3276(08)60020-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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30
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Serrano-Andr�s L, Roos BO, Merch�n M. Theoretical study of the electronic spectra ofcis-1,3,5-hexatriene andcis-1,3-butadiene. ACTA ACUST UNITED AC 1994. [DOI: 10.1007/bf01113392] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Zgierski MZ, Zerbetto F. Theoretical study of the vibronic structure of the 1 1A1→1 1B2 and 1 1A1→1 3B2 electronic transitions in cyclopentadiene. J Chem Phys 1993. [DOI: 10.1063/1.466192] [Citation(s) in RCA: 33] [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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32
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Zerbetto F, Zgierski MZ. The Franck–Condon structure of the 1A→1B transition of cis‐ and trans‐hexatriene: An ab initio modeling. J Chem Phys 1993. [DOI: 10.1063/1.464986] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Serrano‐Andrés L, Merchán M, Nebot‐Gil I, Lindh R, Roos BO. Towards an accurate molecular orbital theory for excited states: Ethene, butadiene, and hexatriene. J Chem Phys 1993. [DOI: 10.1063/1.465071] [Citation(s) in RCA: 377] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Serrano‐Andrés L, Sánchez‐Marín J, Nebot‐Gil I. Theoretical study of the low‐lying states of trans‐1,3‐butadiene. J Chem Phys 1992. [DOI: 10.1063/1.463521] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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35
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Förner W. The Pariser-Parr-Pople model for trans-polyenes. I. Ab initio and semiempirical study of the bond alternation in trans-butadiene. Chem Phys 1992. [DOI: 10.1016/0301-0104(92)80121-b] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Cave RJ, Perrott MG. A theoretical investigation of the ground and low‐lying excited states of butadiene radical cation. J Chem Phys 1992. [DOI: 10.1063/1.461879] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Graham RL, Freed KF. Ab initio study of the trans‐butadiene π‐valence states using the effective valence shell Hamiltonian method. J Chem Phys 1992. [DOI: 10.1063/1.462166] [Citation(s) in RCA: 93] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Chadwick RR, Zgierski MZ, Hudson BS. Resonance Raman scattering of butadiene: Vibronic activity of a bu mode demonstrates the presence of a 1Ag symmetry excited electronic state at low energy. J Chem Phys 1991. [DOI: 10.1063/1.461397] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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39
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Buma WJ, Kohler BE, Song K. Lowest energy excited singlet state of isolated cis‐hexatriene. J Chem Phys 1991. [DOI: 10.1063/1.460315] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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40
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Franck—Codon activity of totally symmetric modes in the absorption spectrum of cyclopentadiene. Chem Phys Lett 1991. [DOI: 10.1016/0009-2614(91)90303-q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Sabljić A, McDiarmid R. Analysis of the absorption spectrum of the NV1 transition of cyclopentadiene. J Chem Phys 1990. [DOI: 10.1063/1.458770] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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