標題: Real-time observation of dynamic coupling between the stretching and bending modes in a polythiophene
作者: Du, Juan
Kobayashi, Takayoshi
電子物理學系
Department of Electrophysics
公開日期: 28-Oct-2009
摘要: By real-time vibrational spectroscopy using 6.3 fs pulses, both instantaneous frequency and amplitude modulated with frequency of 120-130 cm(-1) were observed for the C-C stretching mode with the central frequency of 1343 cm(-1) in a poly-(substituted thiophene). This provided the evidence that a stretching mode dynamically couples with another stretching mode mediated by a low-frequency bending mode. Instantaneous bond-order changed during the bending motion due to the change in the distribution of pi-electrons. The coupling between the stretching and bending modes was found to be maintained for longer than 1200 fs after the start of the coherent molecular vibration. (C) 2009 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cplett.2009.09.091
http://hdl.handle.net/11536/6552
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2009.09.091
期刊: CHEMICAL PHYSICS LETTERS
Volume: 481
Issue: 4-6
起始頁: 204
結束頁: 208
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