Rational design of spiro[fluorene-9,9′-xanthene] based molecule for aggregation induced emission (AIE) and mechanochromism (MC): synthesis and theoretical investigation
作者:Babar Suraj Shivaji、Lal Chand、Jaipal Devesing Girase、Surya Prakash Singh
DOI:10.1039/d3nj01821k
日期:——
aggregation-caused quenching (ACQ). In this study, we have incorporated a spiro-xanthene (SFX) core for the first time to design a new donor–π–acceptor–π–donor 4,4′-((3′,6′-dibutoxyspiro[fluorene-9,9′-xanthene]-2,7-diyl)bis(thiophene-5,2-diyl))bis(N,N-diphenylaniline) (SP-TH) luminescent material with aggregation induced emission (AIE) and mechano-responsive properties. DFT calculations were carried out to
开发在聚集态下具有强发光以及在外力下具有刺激响应的新型有机荧光材料对于固态的实际应用具有重要意义。已确定,三苯乙烯和四苯乙烯是存在于大多数有机发射体中的螺旋桨型芳香族分子结构,具有聚集诱导发射(AIE)特性,可防止聚集引起的猝灭(ACQ)。在这项研究中,我们首次结合了螺氧杂吨(SFX)核心,设计了一种新的供体-π-受体-π-供体4,4′-((3′,6′-二丁氧基螺[芴-9 ,9'-呫吨]-2,7-二基)双(噻吩-5,2-二基))双( N , N-二苯基苯胺) ( SP-TH)具有聚集诱导发射(AIE)和机械响应特性的发光材料。进行DFT计算以研究SP-TH的电子特性。对SP-TH的光物理和电化学性质进行了系统研究。光物理(UV-Vis 和 PL 光谱)研究表明SP-TH具有 AIE 特征。此外,还研究了SP-TH的机械刺激响应,在研磨SP-TH样品时观察到了低色变(黄绿色到蓝绿色),并使用