中国激光, 2004, 31 (s1): 140, 网络出版: 2013-01-29
一种新型卟啉侧链聚合物的超快激发态动力学研究
Investigation of the Excited State Dynamics of a Novel Porphyrin Side-Chain Polymer
nonlinear optics ultrafast spectroscopic techniques porphyrin side-chain polymer excited-state dynamics
摘要
采用超快激光光谱技术研究了一种新型的卟啉侧链聚合物(HTPP-PGMA)的激发态动力学过程.研究结果表明:HTPP-PGMA的荧光弛豫过程远快于通常的小分子卟啉单体化合物的荧光弛豫过程.在近共振波长(λ=532 nm)处,观察到了HTPP-PGMA的瞬态无腔光学双稳态的响应过程.通过采用电荷转移模型对HTPP-PGMA的超快激发态动力学过程进行了分析.
Abstract
The excited-state dynamics and third-order nonlinear optical properties of a novel porphyrin side-chain polymer, 5-hydroxy-10,15,20-triphenyl-porphyrin-poly(glycidyl methacrylate) (HTPP-PGMA) have been comparatively studied with a monomelic compound, 5, 10, 15, 20-tetraphenylpoipliyrin (TPP) by using picosecond and femtosecond transient absorption and fluorescence spectroscopy techniques. The ultrafast initial fluorescence decay (-300 ps) and has been observed ?л HTPP-PGMA, which is absence in TPP. Picosecond transient mirrorless optical bistable responses have been observed in both HTPP-PGMA and TPP. The HTPP-PGMA exhibits a faster decay of the output pulses. The ultrafast excited-state dynamics observed in HTPP-PGMA can be explained by the charge transfer (CT) between the porphyrin chromophores.
王惠, 邓莉, 黄亚萍, 赵福利, 林位株, 王坚, 牛永平, 梁兆熙. 一种新型卟啉侧链聚合物的超快激发态动力学研究[J]. 中国激光, 2004, 31(s1): 140. WANG Hui, DENG Li, HUANG Ya-ping, ZHAO Fu-li, Lin Wei-zhu, WANG Jian, NIU Yong-ping, LIANG Zhao-xi. Investigation of the Excited State Dynamics of a Novel Porphyrin Side-Chain Polymer[J]. Chinese Journal of Lasers, 2004, 31(s1): 140.
PDF全文
