A series of π-expanded coplanar BODIPY dyes with deep-red emission: Synthesis, optical properties, and application in amplified spontaneous emission
作者:Yang Wang、Lei Xie、Qinning Sun、Liang Liu
DOI:10.1039/d3nj01667f
日期:——
dipyrromethene (BODIPY)-derived dyes are a class of superior emitters, and a classic BODIPY structure has absorption and emission at ∼500 nm. To meet the practical application requirements, this work was dedicated to the design and synthesis of BODIPY emitters covering the deep-red region with a high emission quantum yield. Aromatic rings and a well-known electron-withdrawing group, –CF3, were introduced
硼二吡咯亚甲基 (BODIPY) 衍生染料是一类优异的发射体,经典的 BODIPY 结构在~500 nm 处具有吸收和发射。为了满足实际应用需求,本工作致力于设计和合成覆盖深红色区域、具有高发射量子产率的BODIPY发射体。芳香环和著名的吸电子基团 –CF 3,被引入π展开的BODIPY结构中。详细讨论了这些 BODIPY 发射器,包括它们的热稳定性和光学参数,以及它们的光动力治疗性能。讨论了BODIPY光物理性能与其取代基之间的相关性。研究发现,π扩展共面共轭链的形成成功地将BODIPY发射转移到深红色区域(626 nm),并具有高量子产率(0.99)。然而,BODIPY内消旋-C 上的-CF 3修饰猝灭了其发射。ASE(放大自发发射)效应的阈值能量为 980 μJ,效率为 5.5%。使用这些 BODIPY 染料作为光敏剂,细胞活力降低至 9.0 ± 4.6%。