2-PHOTON ABSORPTION AND 3RD-HARMONIC GENERATION OF DI-ALKYL-AMINO-NITRO-STILBENE (DANS) - A JOINT EXPERIMENTAL AND THEORETICAL-STUDY

被引：87
作者：
BELJONNE, D
BREDAS, JL
CHA, M
TORRUELLAS, WE
STEGEMAN, GI
HOFSTRAAT, JW
HORSTHUIS, WHG
MOHLMANN, GR
机构：
[1] PUSAN NATL UNIV,DIELECT & ADV MATTER PHYS RES CTR,PUSAN 609735,SOUTH KOREA
[2] UNIV CENT FLORIDA,CTR RES ELECTROOPT & LASERS,ORLANDO,FL 32826
[3] AKZO CORP,NOBEL CENT RES,6800 SB ARNHEM,NETHERLANDS
来源：
JOURNAL OF CHEMICAL PHYSICS | 1995年 / 103卷 / 18期
关键词：
D O I：
10.1063/1.470200
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：
The one- and two-photon optical absorption spectra as well as the frequency dependent third-harmonic generation response of a side-chain polymer containing 4-dialkylamino-4'-nitro-stilbene (DANS) as its side group have been measured over a wide range of frequency. A three-state model, based on an intermediate neglect of differential overlap/multireference double-configuration interaction description of the excited states, provides a coherent picture of the dynamic response of DANS, but fails in reproducing the red shift observed when going from the linear to the nonlinear absorption spectra; including vibronic coupling within the Franck-Condon approximation improves the fit. (C) 1995 American Institute of Physics.
引用
收藏
页码：7834 / 7843
页数：10
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