Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

The effects of site asymmetry on near-degenerate state-to-state vibronic mixing in flexible bichromophores

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.5107423· OSTI ID:1570631
 [1];  [2];  [3];  [3]
  1. Purdue Univ., West Lafayette, IN (United States); College of William and Mary, Williamsburg, VA (United States)
  2. Purdue Univ., West Lafayette, IN (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Purdue Univ., West Lafayette, IN (United States)
Laser-induced fluorescence excitation and dispersed fluorescence spectra of a model flexible bichromophore, 1,1-diphenylethane (DPE), have been recorded under jet-cooled conditions in the gas phase in the region near the first pair of near-degenerate excited states (S1 and S2). The S1 and S2 origin transitions have been identified at 37 397 and 37 510 cm–1, a splitting of 113 cm–1. This splitting is four times smaller than the excitonic splitting calculated by ab initio methods at the EOM-CCSD/cc-pVDZ level of theory (410 cm–1), which necessarily relies on the Born-Oppenheimer approximation. Dispersed fluorescence spectra provide a state-to-state picture of the vibronic coupling. Furthermore, these results are compared with the results of a multimode vibronic coupling model capable of treating chromophores in asymmetric environments.
Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
LDRD; USDOE
Grant/Contract Number:
89233218CNA000001; FG02-96ER14656
OSTI ID:
1570631
Alternate ID(s):
OSTI ID: 1567931
Report Number(s):
LA-UR--19-29710
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 8 Vol. 151; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (50)

A linear response, coupled-cluster theory for excitation energy journal March 1984
Consistent assignment of the vibrations of symmetric and asymmetric meta-disubstituted benzenes journal April 2018
Beyond Time-Dependent Density Functional Theory Using Only Single Excitations: Methods for Computational Studies of Excited States in Complex Systems journal April 2016
Revisiting the Vibrational and Optical Properties of P3HT: A Combined Experimental and Theoretical Study journal July 2018
Structural Relaxation of Photoexcited Quaterthiophenes Probed with Vibrational Specificity journal August 2015
Intramolecular Energy Hopping and Energy Trapping in Polyphenylene Dendrimers with Multiple Peryleneimide Donor Chromophores and a Terryleneimide Acceptor Trap Chromophore journal August 2001
Collective Behavior of Franck−Condon Excited States and Energy Transfer in DNA Double Helices journal December 2005
Exciton States of Dynamic DNA Double Helices:  Alternating dCdG Sequences journal August 2005
Rotationally Resolved C 2 Symmetric Conformers of Bis-(4-hydroxyphenyl)methane: Prototypical Examples of Excitonic Coupling in the S 1 and S 2 Electronic States journal September 2011
Twist Angle Plays an Important Role in Photophysical Properties of a Donor–Acceptor-Type Conjugated Polymer: A Combined Ensemble and Single-Molecule Study journal December 2011
Exciton Dynamics in Disordered Poly( p -phenylenevinylene). 1. Ultrafast Interconversion and Dynamical Localization journal October 2012
Conformational Effects on Excitonic Interactions in a Prototypical H-Bonded Bichromophore: Bis(2-hydroxyphenyl)methane journal April 2009
Coherent Energy Transfer under Incoherent Light Conditions journal October 2012
Solvent Effects on Vibronic Coupling in a Flexible Bichromophore: Electronic Localization and Energy Transfer induced by a Single Water Molecule journal April 2013
Complexity of excited-state dynamics in DNA journal June 2006
Evidence for wavelike energy transfer through quantum coherence in photosynthetic systems journal April 2007
Ion conformation and orientational order in a dicationic ionic liquid crystal studied by solid-state nuclear magnetic resonance spectroscopy journal March 2021
Advances in methods and algorithms in a modern quantum chemistry program package journal January 2006
Long-range corrected hybrid density functionals with damped atom–atom dispersion corrections journal January 2008
Excitonic splittings in molecular dimers: why static ab initio calculations cannot match them journal January 2015
S1/S2 exciton splitting in the (2-pyridone)2 dimer journal February 2002
Vibronic Coupling. I. Mathematical Treatment for Two Electronic States journal September 1961
Time‐of‐Flight Mass Spectrometer with Improved Resolution journal December 1955
Electronic Spectra of Dimers: Derivation of the Fundamental Vibronic Equation journal September 1960
State-specific studies of internal mixing in a prototypical flexible bichromophore: Diphenylmethane journal September 2008
Rotationally resolved studies of S0 and the exciton coupled S1/S2 origin regions of diphenylmethane and the d12 isotopologue journal December 2008
S1/S2 excitonic splittings and vibronic coupling in the excited state of the jet-cooled 2-aminopyridine dimer journal November 2009
Conformer-specific vibronic spectroscopy and vibronic coupling in a flexible bichromophore: Bis-(4-hydroxyphenyl)methane journal April 2011
The S 1 / S 2 exciton interaction in 2-pyridone·6-methyl-2-pyridone: Davydov splitting, vibronic coupling, and vibronic quenching journal October 2011
Phonon-mediated path-interference in electronic energy transfer journal January 2012
Vibrational relaxation in jet‐cooled alkyl benzenes. I.Absorption spectra journal May 1980
Vibrational relaxation in jet‐cooled alkyl benzenes. II. Fluorescence spectra journal May 1980
Excitation energies from the coupled cluster singles and doubles linear response function (CCSDLR). Applications to Be, CH + , CO, and H 2 O journal September 1990
The equation of motion coupled‐cluster method. A systematic biorthogonal approach to molecular excitation energies, transition probabilities, and excited state properties journal May 1993
Inhomogeneous dephasing masks coherence lifetimes in ensemble measurements journal April 2012
Vibrational quenching of excitonic splittings in H-bonded molecular dimers: The electronic Davydov splittings cannot match experiment journal May 2012
Vibronic coupling in asymmetric bichromophores: Theory and application to diphenylmethane journal August 2012
Vibrational quenching of excitonic splittings in H-bonded molecular dimers: Adiabatic description and effective mode approximation journal November 2012
Excitonic splitting and coherent electronic energy transfer in the gas-phase benzoic acid dimer journal November 2012
Intermolecular vibrations of jet-cooled (2-pyridone)2: A model for the uracil dimer journal February 2000
Excitonic splitting and vibronic coupling in 1,2-diphenoxyethane: Conformation-specific effects in the weak coupling limit journal May 2013
Perspective: Detecting and measuring exciton delocalization in photosynthetic light harvesting journal March 2014
Vibronic coupling in asymmetric bichromophores: Experimental investigation of diphenylmethane- d 5 journal August 2014
Vibronic coupling in asymmetric bichromophores: Theory and application to diphenylmethane- d 5 journal October 2014
Direct evidence of quantum transport in photosynthetic light-harvesting complexes journal December 2011
Elucidation of near-resonance vibronic coherence lifetimes by nonadiabatic electronic-vibrational state character mixing journal August 2018
Localization of electronic and vibrational energy in the jet-cooled m -cyanophenol/ o -cyanophenol dimer: laser induced fluorescence and fluorescence-dip IR spectra journal June 2005
Coherence Dynamics in Photosynthesis: Protein Protection of Excitonic Coherence journal June 2007
L ONG -R ANGE R ESONANCE E NERGY T RANSFER IN M OLECULAR S YSTEMS journal October 2003
Equation-of-Motion Coupled-Cluster Methods for Open-Shell and Electronically Excited Species: The Hitchhiker's Guide to Fock Space journal May 2008

Similar Records

Vibronic coupling in asymmetric bichromophores: Experimental investigation of diphenylmethane-d{sub 5}
Journal Article · Thu Aug 14 00:00:00 EDT 2014 · Journal of Chemical Physics · OSTI ID:22420033

Energy transfer in bichromophoric molecules: The effect of symmetry and donor/acceptor energy gap
Journal Article · Wed Jan 06 23:00:00 EST 1999 · Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment, amp General Theory · OSTI ID:320828

Symmetry reduction--vibronically induced mode mixing in the S/sub 1/ state of. beta. -methylnaphthalene
Journal Article · Wed Feb 29 23:00:00 EST 1984 · J. Chem. Phys.; (United States) · OSTI ID:5122715