Synthesis, structure and two-photon absorption properties of a new multi-branched two-photon photopolymerization initiator

被引：4

作者：

Yan, YX

Tao, XT

Sun, YH

Yu, WT

Wang, CK

Xu, GB

Yang, JX

Wu, YZ

Zhao, X

Jiang, MH

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Shandong Normal Univ, Dept Phys, Jinan 250014, Peoples R China

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2005年 / 733卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

synthesis; structure; two-photon absorption; nonlinear optical properties; two-photon photopolymerization;

D O I：

10.1016/j.molstruc.2004.08.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new free-radical photonpolymerization initiator Tris-[4-(2-pyridin-4-yl-vinyl)-phenyl]-amine (TPPA) has been synthesized and characterized by H-1 NNM spectra, C-13 NMR spectra and elemental analyses. X-ray diffraction analyses reveal that TPPA belongs to monoclinic system, P2(1)/n space group with a = 15.851 (3), b = 9.7932 (18), c = 20.084 (6) Angstrom, alpha = 90, beta = 107.241 (12), gamma = 90degrees, V = 2977.6 (12) Angstrom(3), Z = 4, T = 293 (2) K, D-c = 1.237 g cm(-3), R-1 = 0.0569, wR = 0.1245. The calculated two-photon absorption cross-section is 33.6 X 10(-50) cm(4) s photon(-1). The experimental results confirm that TPPA is a good two-photon absorbing chromophore and operative two-photon photopolymerization initiator. When pumped with 820 run laser irradiation, TPPA shows strong two-photon induced fluorescence. A microstructure has been fabricated under irradiation using a 200 fs, 76 MHz Ti: sapphire femtosecond laser at 820 nm. The possible photopolymerization mechanism is discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：83 / 87

页数：5

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