ANALYSIS OF VIBRATIONAL CORRELATIONS AND COUPLINGS IN THE LOWEST 2 SINGLET-STATES OF PENTACENE BY HIGH-RESOLUTION, FULLY RESONANT, COHERENT 4-WAVE MIXING SPECTROSCOPY

被引:29
作者
CARLSON, RJ [1 ]
WRIGHT, JC [1 ]
机构
[1] UNIV WISCONSIN,DEPT CHEM,MADISON,WI 53706
关键词
D O I
10.1063/1.458553
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Coherent, fully resonant four-wave mixing (FRFWM) spectroscopy is used to probe the vibrational and vibronic state of the pentacene S0 and S1 electronic states. High resolution is obtained using mixed molecular crystals at cryogenic temperatures. The FRFWM spectra combined with conventional absorption and fluorescence spectra allow correlation of the S 1 fundamentals to the corresponding ground state normal coordinates. Couplings between modes are indicated and may be related to Fermi resonance of the pentacene vibrations by means of host librational phonons. © 1990 American Institute of Physics.
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页码:5186 / 5195
页数:10
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