Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10638317 | Materials Chemistry and Physics | 2005 | 5 Pages |
Abstract
A new multi-branched two-photon photopolymerization initiator, tris-(4-{2-[4-(2-pyridin-4-yl-vinyl)-phenyl]-vinyl}-phenyl)-amine (abbreviated to TPVPA) has been synthesized and characterized. The experimental results confirmed that TPVPA is a good two-photon absorbing chromophore and operative two-photon photopolymerization initiator. The calculated two-photon absorption cross-section of TPVPA is 42.4 Ã 10â50 cm4 s photonâ1. A microstructure using TPVPA as initiator has been fabricated under irradiation of a Ti:sapphire femtosecond laser at 830 nm. The possible photopolymerization mechanism is discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yunxing Yan, Xutang Tao, Yuanhong Sun, Guibao Xu, Chuankui Wang, Jiaxiang Yang, Xian Zhao, Yongzhong Wu, Yan Ren, Minhua Jiang,