高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

取代基对二噻吩并噻吩衍生物的双光子吸收性质的影响

周树兰, 赵显, 孙学勤, 程秀凤   

  1. 山东大学晶体材料国家重点实验室, 济南 250100
  • 收稿日期:2005-09-21 修回日期:1900-01-01 出版日期:2006-10-10 发布日期:2006-10-10
  • 通讯作者: 赵显

Effect of Substituents on the Two-photon Absorption Properties for Chromophores Based on Dithienothiophene

ZHOU Shu-Lan, ZHAO Xian, SUN Xue-Qin, CHENG Xiu-Feng   

  1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
  • Received:2005-09-21 Revised:1900-01-01 Online:2006-10-10 Published:2006-10-10
  • Contact: ZHAO Xian

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被引次数

14

摘要： 利用ZINDO/SOS方法, 从理论上研究了对称和不对称取代两种情况下, 取代基对二噻吩并噻吩衍生物单双光子吸收性质的影响. 结果表明, 所设计的噻吩类分子具有较大的双光子吸收截面, 且双受体取代比双给体取代更有利于增大分子的双光子吸收截面. 同时发现, 此类分子受体取代可以显著增加波长较短的双光子峰附近的双光子吸收, 而给体取代则可以改善波长较长吸收峰附近的双光子吸收.

关键词: 双光子吸收截面, 二噻吩并噻吩衍生物(DTT), Sum-Over-States(SOS)

Abstract: In order to investigate the effect of substituents on the two-photon absorption properties(TPA), the one- and two-photon absorption properties were theoretically studied by using ZINDO/SOS method. The results indicate that the compounds based on DTT exhibit strong TPA. Comparing to the unsubstituent molecule, it was found that bis-acceptor substituted molecules possess of drastic enhancement of the TPA cross section at the shorter wavelength absorption peaks and bis-donor substituent can increase the TPA cross section at the longer wavelength absorption peaks.

Key words: Two-photon absorption cross section, Chromophores based on dithienothiophene, Sum-Over-States(SOS)

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