Picosecond Raman Excitation Profile and Transient Absorption Spectrum of S1 Quaterphenyl in Solution | Zendy

W. T. Toner | Zendy; Pavel Matousek | Zendy; Anthony W. Parker | Zendy; Michael Towrie | Zendy

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Picosecond Raman Excitation Profile and Transient Absorption Spectrum of S₁ Quaterphenyl in Solution

Author(s) -

W. T. Toner,

Pavel Matousek,

Anthony W. Parker,

Michael Towrie

Publication year - 1999

Publication title -

laser chemistry

Language(s) - English

Resource type - Journals

eISSN - 1026-8014

pISSN - 0278-6273

DOI - 10.1155/1999/57652

Subject(s) - picosecond , chemistry , resonance (particle physics) , excitation , raman spectroscopy , relaxation (psychology) , population , ultrafast laser spectroscopy , transient (computer programming) , absorption (acoustics) , vibronic coupling , vibrational energy relaxation , spectral line , coupling (piping) , molecular physics , atomic physics , nuclear magnetic resonance , optics , materials science , laser , physics , molecule , psychology , social psychology , demography , organic chemistry , quantum mechanics , astronomy , sociology , computer science , metallurgy , operating system

Intensity changes in Stokes resonance Raman spectra of photoexcited quaterphenyl arefound to result from 17 ps timescale changes in resonance frequency and width and alsoin Franck-Condon displacements. The 766 cm -1 anti-Stokes band shows a significanthot population which decays on a similar timescale. The results show that populationrelaxation, vibronic coupling and solvent reorganisation are all significant on thistimescale.

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