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氧芴三苯胺多枝分子的双光子吸收与电化学行为

张唯舟1, 王筱梅1, 方香云2, 蒋宛莉3, 赵俊芳2   

    1. 苏州大学材料科学与工程学院, 苏州 215021;
    2. 中国科学院理化技术研究所测试中心, 北京 100080;
    3. 山东大学晶体材料国家重点实验室, 济南 250100
  • 收稿日期:2007-12-12 修回日期:1900-01-01 出版日期:2008-08-10 发布日期:2008-08-10
  • 通讯作者: 王筱梅

Strong Two-photon Absorption and Electrochemical Behavior of Dibenzofuran-triphenylamine Dentritic Chromophores

ZHANG Wei-Zhou1, WANG Xiao-Mei1*, FANG Xiang-Yun2, JIANG Wan-Li3, ZHAO Jun-Fang2   

    1. Institute of Material Science and Engineering, Suzhou University, Suzhou 215021, China;
    2. Laboratory of Ultra-Fast Laser, Measurement and Test Center, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
    3. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
  • Received:2007-12-12 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
  • Contact: WANG Xiao-Mei

摘要: 研究了3个氧芴/三苯胺衍生物: E-2,8-双(4-二苯胺基苯乙烯基)氧芴(简称OT-G1)、E-2,8-双[4-(二苯基氨基-二苯乙烯基)(4’-溴苯基)氨基-苯乙烯基]氧芴(简称OT-G1.5)和E-2,8-双-[4’,4″-二-(二苯胺基苯乙烯基)-4-二苯胺基苯乙烯基]氧芴(简称OT-G2)的双光子吸收和电化学行为. 研究结果表明, 分子“代数”从1→1.5→2增高, 氧芴三苯胺多枝分子的HOMO能级升高、双光子荧光强度和双光子吸收截面明显增大. 由于HOMO能级的升高有利于分子的电荷转移, 因而分子表现出强的双光子吸收能力, 这表明可通过电化学行为来推断出分子的双光子吸收性能.

关键词: 氧芴三苯胺多枝分子, 双光子吸收, 双光子荧光, HOMO能级

Abstract: The motivation for the strong two-photon absorbing chromophore is based on the significantly potential applications such as three-dimensional fluorescence imaging, two-photon photodynamic therapy, optical data storage and TPE fluorescence microscopy. Thus, the relationship between molecular structure and strong TPA property is greatly valuable. Here, two-photon absorption(TPA) and electro-chemistry properties of three new dibenzofuran-based chromophores(named as OT-G1, OT-G1.5 and OT-G2) were investigated. Stronger two-photon fluorescence(TPF) and larger TPA cross-section were observed with the generation number increasing. It is interesting to find that the increasing of the HOMO energy level shows the contribution to enhancement of TPA cross-section.

Key words: Dibenzofuran-triphenylamine dentritic chromophore, Two-photon absorption, Two-photon fluorescence, HOMO energy level

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