期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 189, 期 2-3, 页码 398-404出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2007.03.002
关键词
two-photon absorption; anthraquinone derivatives; two-photon polymerization
C-2v symmetrical anthraquinone derivatives, 2,7-bis(2-(4-dimethylamino-phenyl)-vinyl)anthraquinone (1) and 2,7-bis(2-(4-methoxy-phenyl)vinyl)anthraquinone (2) were synthesized by Wittig reaction. Their one-photon absorption and fluorescence, as well as two-photon absorption properties were investigated. These compounds showed strong intramolecular charge transfer bands as well as low fluorescence quantum yield. 1 showed a larger two-photon absorption cross-section of 1635 GM than that of 995 GM for 2 at the wavelength of 800 nm. Furthermore, the initiating properties of 1 and 2 were studied by two-photon induced polymerization. The resin with I as photoinitiator (R-1) possessed higher sensitivity with a threshold energy 3.67 mW at the concentration of 0.02 wt% compared to that of 8.03 mW for 2. The resolution of polymer line, fabricated with R-1 at the threshold with the linear scan speed of 50 mu m/s, is 105 nm. This investigation on the relationship of resolution and sensitivity indicated higher sensitivity benefit to the improvement of microfabrication resolution. (C) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据