化学学报 ›› 2004, Vol. 62 ›› Issue (20): 2103-2108. 上一篇    下一篇

研究简报

氮硼为电子授受中心的D-π-A化合物的合成与上转换荧光

刘志强1,2, 曹笃霞1, 方奇1,2, 刘国群1, 许贵宝1   

  1. 1. 山东大学晶体材料国家重点实验室, 济南, 250100;
    2. 山东大学化学与化工学院, 济南, 250100
  • 投稿日期:2004-02-01 修回日期:2004-04-06 发布日期:2014-02-17
  • 通讯作者: 方奇,E-mail:fangqi@icm.sdu.edu.cn E-mail:fangqi@icm.sdu.edu.cn
  • 基金资助:
    国家自然科学基金(No.20172034)和高等学校骨干教师计划资助项目.

Synthesis and Up-Converted Fluorescence of D-π-A Compounds with N and B as the Centers of Electron Donating and Accepting Groups

LIU Zhi-Qiang1,2, CAO Du-Xia1, FANG Qi1,2, LIU Guo-Qun1, XU Gui-Bao1   

  1. 1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100;
    2. School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100
  • Received:2004-02-01 Revised:2004-04-06 Published:2014-02-17

以二米基硼-B(Mes)2为电子受体,以芴基为共轭桥,分别以二苯胺和咔唑为电子给体,合成了两个新的D-π-A型化合物:2-(N,N-二苯胺基)-7-二米基硼基-9,9-二乙基芴[2-(N,N-diphenylamino)-7-dimesitylboryl-9,9-diethylfluorene,1]和2-N-咔唑基-7-二米基硼基-9,9-二乙基芴[2-carbazolyl-7-dimesitylboryl-9,9-diethylfluorene,2].在脉宽为200fs的飞秒激光激发下,它们在THF中发出强的蓝色上转换荧光(1:λmax=484nm;2:λmax=440 nm).用双光子荧光方法测得它们的双光子吸收截面分别为425 GM(激发波长为800nm)和116 GM(激发波长为730 nm).

关键词: 二米基硼, 芴衍生物, 双光子吸收, 上转换荧光

Two novel fluorene derivatives with dimesitylboryl as electron acceptor and diphenylamino or carbazolyl as electron donor have been synthesized, which are named 2-(N,N-diphenylamino)-7-dimesitylboryl-9,9-diethyl-fluo~rene (1) and 2-carbazolyl-7-dimesitylboryl-9,9-diethylfluorene (2). Upon excitation by femtosecond laser with a pulse-width of 200 fs, both compounds exhibit strong blue two-photon excited fluorescence in THF with λmax=484 nm for 1 and λmax=440 nm for 2. Their two-photon absorption cross-sections obtained by two-photon fluorescence method are 425 GM (1, excited at 800 nm) and 116 GM (2, excited at 730 nm).

Key words: dimesitylboryl, fluorene derivative, two-photon absorption, up-converted fluorescence