Vibronic contributions to resonant NLO responses: two-photon absorption in push-pull chromophores

被引：42

作者：

Painelli, A ^{[1
]}

Del Freo, L ^{[1
]}

Terenziani, F ^{[1
]}

机构：

[1] Univ Parma, Dipartimento Chim Gen & Inorgan Chim Analit & Chi, INSTM, UdR Parma, I-43100 Parma, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2001年 / 346卷 / 5-6期

关键词：

D O I：

10.1016/S0009-2614(01)00994-0

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：

Two-photon absorption (TPA) spectra of push-pull chromophores are described in terms of a two-state model accounting for electron-vibration coupling. Vibrations have two main effects in TPA spectra. The most obvious one is the appearance of a vibrational structure in the spectrum; in this respect we find large Herzberg-Teller (HT) contributions. The second effect was not recognized so far: vibrational states contribute a new channel to TPA process, that shows up with a blue-shift and a distortion of the spectrum. (C) 2001 Elsevier Science B.V, All rights reserved.

引用

页码：470 / 478

页数：9

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