Dual Emission of
<i>meso</i>
‐Phenyleneethynylene–BODIPY Oligomers: Synthesis, Photophysics, and Theoretical Optoelectronic Study
作者:J. Reyes Flores、Griselda Castruita‐De León、Gleb Turlakov、Eduardo Arias、Ivana Moggio、Sagrario M. Montemayor、Román Torres、Raquel Ledezma、Ronald F. Ziolo、Julio González‐Torres
DOI:10.1002/chem.202004481
日期:2021.2
electronically isolated. The photophysical, electrochemical, and theoretical studies confirm this finding because the properties of nPEC4‐By are comparable to those of the nPEC4‐X oligomers and BODIPY, indicating negligible electron communication between BODIPY and the nPEC4 moieties. Nevertheless, energy transfer (ET) from nPEC4 to BODIPY was rationalized by spectroscopy and theoretical calculations. Its yield
两个系列的2,5-二(丁氧基)亚苯基亚乙炔基,一个被卤化(n PEC4-X ; n = 2、3或4),另一个被二硼化二吡咯亚甲基(BODIPY)终止(n PEC4-By ; n = 3, 4,或5; By = BODIPY)是通过逐步方法单向合成的,并且分子结构已通过NMR光谱法(1 H,13 C-DEPTQ-135,COSY,HSQC,HMBC,11 B,19 F)和MALDI-TOF质谱。1 H,11 B和19 F / 11的多重性和J耦合常数B NMR信号显示,在n PEC4-By系列中,BODIPY的内消旋位置的苯基在电子上成为亚苯基亚乙炔基链共轭的电子部分,而BODIPY是电子分离的。光物理,电化学和理论研究证实了这一发现,因为n PEC4-By的性质与n PEC4-X低聚物和BODIPY的性质相当,这表明BODIPY与n PEC4部分之间的电子通讯可忽略不计。然而,n PEC4