高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (4): 703-707.

• 研究论文 • 上一篇    下一篇

2,4和8-支噁二唑衍生物的三光子吸收和三光子上转换荧光

钱鹰1, 朱晓勤1, 吉彦1, 黄维2, 吕昌贵2, 崔一平2   

  1. 1. 东南大学化学化工学院, 南京 211189;
    2. 东南大学先进光子学中心, 南京 210096
  • 收稿日期:2009-06-02 出版日期:2010-04-10 发布日期:2010-04-10
  • 通讯作者: 钱鹰, 女, 博士, 教授, 主要从事有机光电功能材料的研究. E-mail: yingqian@seu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 60678042, 60877024)和东南大学科学基金(批准号: 9207041399)资助.

Three-photon Absorption and Upconversion Fluorescence of Bis-, Quadri-, Octu-branched Symmetrical Oxadiazole Derivatives

QIAN Ying1*, ZHU Xiao-Qin1, JI Yan1, HUANG Wei2, LÜ Chang-Gui2, CUI Yi-Ping2   

  1. 1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China;
    2. Advanced Photonics Center, Southeast University, Nanjing 210096, China
  • Received:2009-06-02 Online:2010-04-10 Published:2010-04-10
  • Contact: QIAN Ying. E-mail: yingqian@seu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 60678042, 60877024)和东南大学科学基金(批准号: 9207041399)资助.

摘要:

用飞秒Ti:sapphire激光测定了3个对称噁二唑衍生物4-{N,N-双[4-(4-[5-(4-叔丁基苯基)-1,3,4-噁二唑-2]苯乙烯基)苯基]氨基}苯甲醛(Bis-oxa)、2,5-双{4-[2-N,N-双(4-{4-[5-(4-叔丁基苯基)-1,3,4-噁二唑-2]苯乙烯基}苯基)氨基苯乙烯基]苯基}-1,3,4-噁二唑(Quadri-oxa)和2,5-双(4-{2-N,N-双[({3,5-二[5-(4-叔丁基苯基)-1,3,4-噁二唑-2]苯基}乙烯基)苯基]氨基苯乙烯基}苯基)-1,3,4-噁二唑(Octu-oxa)的三光子吸收谱和三光子荧光光谱. 在1260 nm飞秒激光激发下, 2,4和8-支噁二唑衍生物的三光子吸收系数分别为5.0×10-5, 10.0×10-5和10.0×10-5 cm3/GW2, 三光子频率上转换荧光发射波长分别为533, 544和551 nm. 研究了多支化合物线性吸收和透过、单光子荧光及量子产率、荧光寿命、多光子荧光光谱和三光子吸收系数谱. 对称多支噁二唑衍生物具有很强的三光子吸收和上转换荧光性质.

关键词: 对称噁二唑衍生物; 三光子吸收; 多光子上转换荧光; 荧光寿命

Abstract:

The three-photon absorption and the three-photon-excited fluorescence spectra of three symmetrical oxadiazole derivatives, 4-[N,N-bis(4-{4-[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]styryl}phenyl)amino]benzaldehyde(Bis-oxa), 2,5-bis(4-{2-N,N-bis[4-(2-{4-[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]-phenyl}-vinyl)phenyl]aminostyryl}phenyl)-1,3,4-oxadiazole(Quadri-oxa) and 2,5-bis(4-{2-N,N-bis[4-(2-{3,5-di-[5-(4-tert-butylphenyl)-1,3,4-oxadiazol-2-yl]phenyl}-1-ethenyl-)phenyl]aminostyryl}phenyl)-1,3,4-oxadiazole(Octu-oxa) were measured by nonlinear transmission method using a femtosecond Ti∶sapphire laser. Their three-photon absorption coefficients of 1260 nm were 5.0×10-5, 10.0×10-5 and 10.0×10-5 cm3/GW2, respectively. Pumped by a femtosecond laser at 1260 nm, strong upconversion fluorescence with the central wavelength at 533 nm(Bis-oxa), 544 nm(Quadri-oxa)and 551 nm(Octu-oxa) in the solution of CH2Cl2 have been observed. A detailed spectroscopic study of these chromophores, including absorption, fluorescence emission, fluorescence lifetime, multiphoton excited fluorescence and 3PA coefficient were measured. The multibranched symmetrical oxadiazole derivatives display large three-photon absorption and strong upconversion fluorescence properties.

Key words: Symmetrical oxadiazole derivatives; Three-photon absorption; Multiphoton upconversion fluorescence; Fluorescence lifetime