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Interference between Franck–Condon and Herzberg–Teller Terms in the Condensed-Phase Molecular Spectra of Metal-Based Tetrapyrrole Derivatives

Journal Article · · Journal of Physical Chemistry Letters
 [1];  [2];  [2];  [3]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Kavli Energy Nanoscience Institute (ENSI), Berkeley, California (United States)
  2. Univ. of Illinois, Urbana, IL (United States)
  3. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Kavli Energy Nanoscience Institute (ENSI), Berkeley, California (United States)s
The commonly used Franck-Condon (FC) approximation is inadequate for explaining the electronic spectra of compounds that possess vibrations with substantial Herzberg-Teller (HT) couplings. Metal-based tetrapyrrole derivatives, which are ubiquitous natural pigments, often exhibit prominent HT activity. In this paper, we compare the condensed phase spectra of zinc-tetraphenylporphyrin (ZnTPP) and zinc-phthalocyanine (ZnPc), which exhibit vastly different spectral features in spite of sharing a common tetrapyrrole backbone. The absorption and emission spectra of ZnTPP are characterized by a lack of mirror symmetry and nontrivial temperature dependence. In contrast, mirror symmetry is restored, and the nontrivial temperature-dependent features disappear in ZnPc. We attribute these differences to FC-HT interference, which is less pronounced in ZnPc because of a larger FC component in the dipole moment that leads to FC-dominated transitions. A single minimalistic FC-HT vibronic model reproduces all the experimental spectral features of these molecules. These observations suggest that FC-HT interference is highly susceptible to chemical modification.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1896888
Journal Information:
Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 32 Vol. 13; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (43)

meso, meso-Linked Porphyrin Arrays journal February 1997
Principles of Fluorescence Spectroscopy book January 2006
Metalloporphyrin structure and dynamics from resonance raman spectroscopy journal April 1990
Vibronic fine-structure in the S0→S1 absorption spectrum of zinc porphyrin: A Franck–Condon simulation incorporating Herzberg–Teller theory and the Duschinsky effect journal May 2012
Photophysical characterization of imidazolium-substituted Pd(II), In(III), and Zn(II) porphyrins as photosensitizers for photodynamic therapy journal December 2008
Density functional theory study of vibronic structure of the first absorption Qx band in free-base porphin journal October 2006
Herzberg–Teller Effect on the Vibrationally Resolved Absorption Spectra of Single-Crystalline Pentacene at Finite Temperatures journal October 2020
Non-condon Effect on Ultrafast Excited-State Intramolecular Proton Transfer journal December 2019
Franck–Condon and Herzberg–Teller Signatures in Molecular Absorption and Emission Spectra journal April 2022
Ultrafast Time-Resolved Emission and Absorption Spectra of meso -Pyridyl Porphyrins upon Soret Band Excitation Studied by Fluorescence Up-Conversion and Transient Absorption Spectroscopy journal August 2016
Ultrafast Dynamics of Nonrigid Zinc-Porphyrin Arrays Mimicking the Photosynthetic “Special Pair” journal April 2020
Ligand binding to heme proteins: connection between dynamics and function journal April 1991
General Time Dependent Approach to Vibronic Spectroscopy Including Franck–Condon, Herzberg–Teller, and Duschinsky Effects journal August 2013
Strongly Coupled Porphyrin Arrays Featuring Both π-Cofacial and Linear-π-Conjugative Interactions journal January 2002
Multiporphyrin Arrays with π–π Interchromophore Interactions journal December 2014
Ultrafast Dynamics of Highly Conjugated Porphyrin Arrays journal November 1998
Synthetic Control of Exciton Dynamics in Bioinspired Cofacial Porphyrin Dimers journal March 2022
Solvent Effects on Vibrational Coherence and Ultrafast Reaction Dynamics in the Multicolor Pump−Probe Spectroscopy of Intervalence Electron Transfer journal October 2000
Observation of Herzberg−Teller-type Wave Packet Motion in Porphyrin J-Aggregates Studied by Sub-5-fs Spectroscopy journal April 2002
Lessons from nature about solar light harvesting journal September 2011
Porphyrins at interfaces journal January 2015
Conjugated porphyrin arrays: synthesis, properties and applications for functional materials journal January 2015
Resolving the ambiguity in the relation between Stokes shift and Huang–Rhys parameter journal January 2015
Characterization of electronic transitions in complex molecules journal January 1950
Totally Symmetric Vibronic Perturbations and the Phenanthrene 3400‐Å Spectrum journal May 1969
Herzberg‐Teller interactions and spectra of dimers: Stable anthracene dimer journal September 1973
Effective method for the computation of optical spectra of large molecules at finite temperature including the Duschinsky and Herzberg–Teller effect: The Qx band of porphyrin as a case study journal June 2008
Isolated ultracold porphyrins in supersonic expansions. I. Free‐base tetraphenylporphyrin and Zn‐tetraphenylporphyrin journal November 1982
Isolated ultracold porphyrins in supersonic expansions. II. Zn‐tetrabenzoporphyrin journal November 1982
Isolated ultracold porphyrins in supersonic expansions. III. Free‐base porphine journal November 1982
Effects of Herzberg–Teller vibronic coupling on coherent excitation energy transfer journal November 2016
On the spectral profile change in the Q band absorption spectra of metalloporphyrins (Mg, Zn, and Pd): A first-principles study journal April 2019
On-the-fly ab initio semiclassical evaluation of vibronic spectra at finite temperature journal July 2020
Vibronic coupling in energy transfer dynamics and two-dimensional electronic–vibrational spectra journal August 2021
Shapes of Impurity Absorption Bands in Solids journal October 1965
Nuclear Motions Associated with Electron Transitions in Diatomic Molecules journal December 1928
Interaction of Normal Modes with Electron Traps journal October 1959
Dynamics of the dissipative two-state system journal January 1987
What does the term "Vibronic Coupling" Mean? journal March 1977
Long-range electron transfer in heme proteins journal August 1986
Highly conjugated, acetylenyl bridged porphyrins: new models for light-harvesting antenna systems journal May 1994
Quantum Coherence in Photosynthetic Light Harvesting journal March 2012
Electronic Spectra journal October 1972

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