Light-induced conformational transitions of individual molecules in ordered films

被引:2
|
作者
Maslova, NS [1 ]
Oreshkin, AI
Panov, VI
Magnitskii, SA
机构
[1] Moscow MV Lomonosov State Univ, Chair Quantum Radiophys, Moscow 119899, Russia
[2] Moscow MV Lomonosov State Univ, Ctr Int Laser, Moscow 119899, Russia
基金
俄罗斯基础研究基金会;
关键词
scanning tunnelling microscopy; optical properties; tunnelling;
D O I
10.1016/S0038-1098(00)00399-9
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The light-induced conformational transformations of naphthacequinone molecules have been studied experimentally and theoretically by varying the wavelength of the optical radiation. Distinctions in the electronic and topologic structures for Langmuir-Schaefer films and for individual molecules during light-induced transition have been observed. A theoretically model based on the investigation of relaxation of a driven nonlinear oscillator in the presence of tunnelling transitions between different quasienergy states has been suggested to explain the observed conformational transitions. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:41 / 46
页数:6
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