Single-Molecule Spectroscopy on a Ladder-Type Conjugated Polymer: Electron-Phonon Coupling and Spectral Diffusion

ChemPhysChem ◽  
2009 ◽  
Vol 10 (14) ◽  
pp. 2524-2534 ◽  
Author(s):  
Richard Hildner ◽  
Laura Winterling ◽  
Ulrich Lemmer ◽  
Ullrich Scherf ◽  
Jürgen Köhler
Keyword(s):  
Single Molecule ◽  
Conjugated Polymer ◽  
Spectral Diffusion ◽  
Single Molecule Spectroscopy ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Revealing the Electron–Phonon Coupling in a Conjugated Polymer by Single-Molecule Spectroscopy

2007 ◽  
Vol 19 (15) ◽  
pp. 1978-1982 ◽  
Author(s):  
R. Hildner ◽  
U. Lemmer ◽  
U. Scherf ◽  
M. van Heel ◽  
J. Köhler
Keyword(s):  
Single Molecule ◽  
Conjugated Polymer ◽  
Single Molecule Spectroscopy ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

ELECTRONIC CORRELATIONS AND ELECTRON-PHONON COUPLING IN C60

1993 ◽  
Vol 07 (15) ◽  
pp. 2859-2884 ◽  
Author(s):  
MARKKU I. SALKOLA ◽  
SUDIP CHAKRAVARTY ◽  
STEVEN A. KIVELSON
Keyword(s):  
Single Molecule ◽  
Phonon Spectrum ◽  
Correlation Effects ◽  
Phonon Coupling ◽  
Teller Distortion ◽  
Electron Phonon Coupling ◽  
Jahn Teller ◽  
Infrared Intensities ◽  
Doubly Charged ◽  
Jahn Teller Distortion

We study a model of a single molecule of C 60 to obtain an understanding of the interplay between the electron-electron and electron-phonon interactions in these molecules. In particular, we calculate the intramolecular phonon spectrum, infrared intensities, and the Raman intensities. We also find that when correlation effects are sufficiently strong, the Jahn-Teller distortion of the doubly charged molecule is suppressed. Thus, if the correlation effects are strong, the superconductivity in doped C 60 cannot be mediated by intra-molecular Jahn-Teller phonons.

scholarly journals Single Molecule Fluorescence Spectroscopy of PSI Trimers from Arthrospira platensis: A Computational Approach

Molecules ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 822 ◽  
Author(s):  
Roman Pishchalnikov ◽  
Vladimir Shubin ◽  
Andrei Razjivin
Keyword(s):  
Single Molecule ◽  
Fluorescence Spectra ◽  
Arthrospira Platensis ◽  
Phonon Coupling ◽  
Phonon Modes ◽  
Spectroscopy Analysis ◽  
Strong Electron ◽  
Zero Phonon Line ◽  
Electron Phonon Coupling ◽  
Single Molecule Fluorescence Spectroscopy

Based on single molecule spectroscopy analysis and our preliminary theoretical studies, the linear and fluorescence spectra of the PSI trimer from Arthrospira platensis with different realizations of the static disorder were modeled at cryogenic temperature. Considering the previously calculated spectral density of chlorophyll, an exciton model for the PSI monomer and trimer including the red antenna states was developed taking into account the supposed similarity of PSI antenna structures from Thermosynechococcus e., Synechocystis sp. PCC6803, and Arthrospira platensis. The red Chls in the PSI monomer were assumed to be in the nearest proximity of the reaction center. The PSI trimer model allowed the simulation of experimentally measured zero phonon line distribution of the red states considering a weak electron-phonon coupling for the antenna exciton states. However, the broad absorption and fluorescence spectra of an individual emitter at 760 nm were calculated by adjusting the Huang-Rhys factors of the chlorophyll lower phonon modes assuming strong electron-phonon coupling.

Spectral diffusion in an amorphous polymer probed by single molecule spectroscopy

1995 ◽  
Vol 64 (1-6) ◽  
pp. 1-11 ◽  
Author(s):  
J. Tittel ◽  
R. Kettner ◽  
Th. Basché ◽  
C. Bräuchle ◽  
H. Quante ◽  
...  
Keyword(s):  
Single Molecule ◽  
Amorphous Polymer ◽  
Spectral Diffusion ◽  
Single Molecule Spectroscopy
Sign in / Sign up

Export Citation Format

Share Document