化学学报 ›› 2004, Vol. 62 ›› Issue (23): 2343-2347. 上一篇    下一篇

研究论文

双光子吸收聚合引发剂EPVPVC的合成和非线性光学性质的研究

延云兴1, 陶绪堂1, 孙元红2, 许贵宝1, 王传奎2, 杨家祥1, 于晓强1, 吴拥中1, 赵显1, 蒋民华1   

  1. 1. 山东大学晶体材料国家重点实验室, 济南, 250100;
    2. 山东师范大学物理系, 济南, 250014
  • 投稿日期:2004-03-16 修回日期:2004-06-23 发布日期:2014-02-17
  • 通讯作者: 延云兴,E-mail:yxyan@icm.sdu.edu.cn E-mail:yxyan@icm.sdu.edu.cn
  • 基金资助:
    国家自然科学基金(Nos.50323006,50325311,10274044)资助项目.

Synthesis and Nonlinear Optical Properties of a New Two-photon Photopolymerization Initiator EPVPVC

YAN Yun-Xing1, TAO Xu-Tang1, SUN Yuan-Hong2, XU Gui-Bao1, WANG Chuan-Kui2, YANG Jia-Xiang1, YU Xiao-Qiang1, WU Yong-Zhong1, ZHAO Xian1, JIANG Min-Hua1   

  1. 1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100;
    2. Department of Physics, Shandong Normal University, Jinan 250014
  • Received:2004-03-16 Revised:2004-06-23 Published:2014-02-17

合成了一个新的双光子吸收聚合引发剂,9-乙基-3-{2-[4-(2-吡啶基-4-乙烯基)-苯基]-乙烯基}-9氢咔唑 (EPVPVC),用1H NMR谱、13C NMR谱和元素分析进行了表征.测试了紫外吸收光谱、单光子荧光光谱、单光子荧光寿命、单光子荧光量子产率和双光子荧光光谱.量化计算结果表明,EPVPVC的双光子吸收截面为56.6×10-50 cm4·s·photon-1.在780 nm的飞秒脉冲激光激发下,EPVPVC发出较强的上转换荧光,荧光峰位于536 nm.用EPVPVC做引发剂,加入丙烯酸酯型齐聚物(cN120C80),在脉冲宽度为200 fs,重复频率为76 MHz,中心波长为780 nm 飞秒脉冲激光下,制作了一个三维周期性微结构.在理论计算的基础上,定性地探讨了其可能的聚合机理.

关键词: 合成, 双光子吸收, 非线性光学, 双光子聚合

A new two-photon free-radical photopolymerization initiator 9-ethyl-3-{2-[4-(2-pyrid-4-yl)-vinylphenyl]-vinyl-carbazole (abbrev.EPVPVC) has been synthesized and structurally characterized by 1H NMR spectra, 13C NMR spectra and elemental analyses.Linear absorption, one-photon induced fluorescence, one-photon fluorescence lifetime, one-photon fluorescence quantum yield and two-photon induced fluorescence were experimentally studied.The calculated two-photon absorption cross-section is as high as 56.6×10-50 cm4·s·photon-1.When pumped with 780 nm laser irradiation, EPVPVC exhibits strong two-photon induced fluorescence of 536 nm.A microstructure using EPVPVC as initiator has been fabricated under irradiation of 200 fs, 76 MHz Ti: sapphire femtosecond laser at 780 nm.The possible mechanism of photopolymerization was discussed based on quantum chemistry calculations.

Key words: synthesis, two-photon absorption, nonlinear optical, two-photon photopolymerization