Picosecond Laser Spectroscopy of Intramolecular Heteroexcimer Systems. Time-resolved Fluorescence Studies of<i>p</i>-(CH<sub>3</sub>)<sub>2</sub>NC<sub>6</sub>H<sub>4</sub>–(CH<sub>2</sub>)<i><sub>n</sub></i>–(9-Anthryl),<i>p</i>-(CH<sub>3</sub>)<sub>2</sub>NC<sub>6</sub>H<sub>4</sub>–(1-Pyrenyl) Systems and 9,9′-Bianthryl
作者:Masahito Migita、Tadashi Okada、Noboru Mataga、Yoshiteru Sakata、Soichi Misumi、Nobuaki Nakashima、Keitaro Yoshihara
DOI:10.1246/bcsj.54.3304
日期:1981.11
9′-bianthryl. Effects of methylene chain length, solvent polarity and viscosity upon the intramolecular charge transfer processes have been clearly demonstrated. It is concluded that molecules with sandwich configuration in the ground state are not recognized in both n=3 compounds, and it takes a few ns for the heteroexcimer formation in hexane because of an extensive conformation change necessary to
为了阐明光化学电荷转移和异源准分子形成过程的基本过程的细节,也为了将获得的结果与瞬态吸收光谱测量的结果进行比较,我们通过 ps 时间分辨方法检查了以下分子内异源准分子系统使用锁模 Nd3+ 进行荧光测量:YAG 激光器和条纹相机:p-(CH3)2–NC6H4–(CH2)n–(9-蒽基) (n=0, 1, 2, 3), p-( CH3)2NC6H4–(CH2)n-(1-芘基) (n=1, 2, 3) 和 9,9'-联蒽基。已经清楚地证明了亚甲基链长、溶剂极性和粘度对分子内电荷转移过程的影响。得出的结论是,在 n=3 化合物中均未识别出在基态具有夹心构型的分子,由于采用夹心构型所需的广泛构象变化,在己烷中形成异源准分子需要几纳秒。构象变化和溶剂重新定向都涉及...