噻吩乙烯类化合物的合成、聚集诱导发光和力致变色性能
Synthesis,Aggregation Induced Luminescence and Piezochromic Properties of Thiophene Ethylene Derivatives
梅群波 1冯望 1翟有 1马雪燕 1赵兰兰 1邱贝贝1
作者信息
- 1. 南京邮电大学材料科学与工程学院,江苏南京 210046
- 折叠
摘要
大多数发光材料固态下或高浓度掺杂时由于强的荧光猝灭而使其应用受到很大限制,开发能在聚集状态下呈现优异发光性能的新材料就显得尤为重要.本文设计并合成了4个基于噻吩乙烯骨架结构的噻吩乙烯类化合物Br-thph、Br-2thph、Thph-czm和2Thph-czm,并详细研究了该类化合物在稀溶液下、聚集态以及固态薄膜下的光物理性质.结果表明,4种化合物均具有明显的聚集诱导发光性质,在稀溶液中发光较弱,而随着浓度的增加或在聚集态下时呈现很强的发光.其中,Br-thph和Br-2thph聚集态发光相较稀溶液下发光分别增强410倍和180倍,Thph-czm和2Thph-czm增强了78倍和40倍,且4个化合物都具有较为明显的力致变色效果,呈现出一定的光谱蓝移.对这些化合物性质的初步探究表明,这类新型噻吩乙烯类化合物衍生物在防伪和显示等领域具有潜在的应用价值.
Abstract
Most luminescent materials are greatly limited in their applications due to strong fluorescence quenching in solid state or high doping concentration.Therefore,it is particularly important to research and develop new materi-als that can exhibit excellent luminescent properties in aggregated states.Four compounds based on the thiophene ethylene skeleton structure,Br-thph,Br-2thph,Thph-czm,and 2Thph-czm were synthesized in this paper.The photophysical properties of this type of compound have been studied in detail in low concentration solutions,aggre-gates,and solid films.The results showed that all four compounds exhibited significant aggregation induced lumines-cence properties,with weak luminescence in low concentration solutions,but exhibited strong luminescence with in-creasing concentration or in aggregated states.Among them,compounds Br-thph and Br-2thph exhibit 410 and 180 times enhanced luminescence compared to low concentration solutions,while Thph-czm and 2Thh-czm exhibit 78 and 40 times enhanced luminescence,respectively.Moreover,all four compounds exhibited significant mechanoflu-orochromic effects and exhibited a certain spectral blue shift.Through preliminary exploration of the photophysical properties of these compounds,it is indicated that these novel thiophene ethylene derivatives have potential applica-tion value in anti-counterfeiting and display fields.
关键词
乙烯/噻吩/咔唑/聚集诱导发光(AIE)/力致变色Key words
ethylene/thiophene/carbazole/aggregation-induced emission(AIE)/mechanofluorochromic引用本文复制引用
基金项目
国家自然科学基金(61675088)
国家自然科学基金(61675089)
国家自然科学基金(62075103)
南京邮电大学自然科学研究项目(NY221090)
出版年
2024
国家科技期刊平台
NSTL
万方数据