Two new asymmetrical two-photon photopolymerization initiators: Synthesis, characterization and nonlinear optical properties
| Autor: | Xian Zhao, Minhua Jiang, Yan Ren, Xutang Tao, Chuan-Kui Wang, Jiaxiang Yang, Guibao Xu, Yun-Xing Yan, Yongzhong Wu, Yuan-Hong Sun |
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| Rok vydání: | 2005 |
| Předmět: |
Absorption spectroscopy
Chemistry Organic Chemistry Nonlinear optics Photochemistry Two-photon absorption Fluorescence Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Inorganic Chemistry Photopolymer Polymerization Emission spectrum Electrical and Electronic Engineering Physical and Theoretical Chemistry Absorption (electromagnetic radiation) Spectroscopy |
| Zdroj: | Optical Materials. 27:1787-1792 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2004.12.017 |
| Popis: | Two new asymmetrically free-radical two-photon photopolymerization initiators, Diphenyl-{4-[2-(4-pyrrolidin-1-yl-phenyl)-vinyl]-phenyl}-amine (abbreviates to DYVPA) and 9-{4-[2-(4-Pyrrolidin-1-yl-phenyl)-vinyl]-phenyl}-9H-carbazole (abbreviates to PPVPA), have been synthesized and characterized. Linear absorption, one-photon fluorescence emission and their lifetimes, and two-photon fluorescence emission have been investigated. The calculated two-photon absorption cross-sections of DYVPA and PPVPA are 70.1 and 28.0 × 10 −50 cm 4 s photon −1 , respectively. Microfabrications via two-photon initiating polymerization have been studied and the possible photopolymerization mechanism is discussed. |
| Databáze: | OpenAIRE |
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