基于位阻效应调控的D-A-π-A型三苯胺敏化染料的设计与性能研究  

Design and Properties of D-A-π-A Triphenylamine Sensitized Dyes Based on Steric Effect

作　　者：张雅净 吕杨 刘博[1] ZHANG Yajing;LYU Yang;LIU Bo(College of Chemistry and Materials Science,Hebei Normal University,Hebei Key Laboratory of Organic Functional Molecules,Hebei Shijiazhuang 050024,China)

机构地区：[1]河北师范大学化学与材料科学学院,河北省有机功能分子重点实验室,河北石家庄050024

出　　处：《河北师范大学学报（自然科学版）》2023年第5期493-501,共9页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金(21576070)。

摘　　要：纯有机敏化染料分子结构,特别是染料分子的平面性变化能够有效调控分子的多种性能.将具有不同位阻效应的甲氧基和羟基基团分别引入到染料分子中,合成了具有D-A-π-A结构的敏化染料CS-75和CS-76,并对其结构和性能进行了深入研究.结果表明,具有较小位阻效应基团的CS-76的平面性更强,其产生较强的H聚集导致荧光寿命和电子注入效率均低于CS-75,基于CS-76的电池器件的光电转换效率也较低.这项工作为纯有机敏化染料的分子设计提供参考.The properties of pure organic sensitized dyes can be regulated by the molecular struc-tures,especially the change of molecular planarity.Sensitized dyes CS-75 and CS-76 with D-A-π-A structure were synthesized by introducing methoxy and hydroxyl groups with different steric effects into dye molecules.And their structures and properties were investigated deeply.The results showed that CS-76 with smaller steric effect groups showed stronger planarity,and its strong H-aggregation resulted in lower fluorescence lifetime and electron injection efficiency than CS-75.The photoelectric conversion efficient of cell devices based on CS-76 was also lower.This work provides a reference for the molecular design of pure organic sensitized dyes.

关 键 词：有机染料 分子设计 三苯胺 位阻效应 平面性 

分 类 号：O175.2[理学—数学]