摘要
四苯乙烯衍生物独特的发光性质使其在成像、传感等众多领域受到了广泛的关注。通过将四苯乙烯与荧光基团蒽相连构筑了化合物4,4′-二(9-蒽甲基氨甲基)四苯基乙烯(TPE-AN),研究表明在四氢呋喃和水的混合体系中随着化合物的聚集,其表现出蒽的单体发射、蒽的激基缔合物发射和四苯乙烯的聚集诱导发光特性。除此之外,TPE-AN表现出可逆的机械变色性能,研磨可导致其发射波长的红移,并伴随着荧光量子产率的下降和荧光寿命的增加,溶剂熏蒸又能使其恢复至初始状态。进一步的研究表明TPE-AN的机械变色特性是由四苯乙烯和蒽单元共同决定的。
The tetraphenylethene(TPE)derivatives have received wide attention in many fields,such as imaging and sensing,for their unique luminescent properties.In this work,4,4′-Bis(9-anthracenamethylaminemethyl)tetraphenylethylene(TPE-AN)was synthesized by connecting TPE with anthracene fluorophore.The results indicated that TPE-AN could exhibit the fluoresce character of anthracene monomer,anthracene excimer and AIE emission of TPE in the mixture of tetrahydrofuran and water with the aggregation of TPE-AN.In addition,TPE-AN showed reversible mechanochromic luminescence property.The red shift of emission wavelength was observed under mechanical force stimulation,accompanied with the decrease of fluorescence quantum yield and the increase of fluorescence lifetime,while its initial state could be restored by solvent fuming.Further studies indicate that TPE and anthracene units were responsible for the mechanochromic luminescence behavior of TPE-AN.
作者
蒋梦忆
李星
李艾强
韩勰
JIANG Meng-yi;LI Xing;LI Ai-qiang;HAN Xie(School of Chemical Engineering and Technology,Wu Han University of Science and Technology,Wuhan 430000,China)
出处
《化学试剂》
CAS
北大核心
2023年第12期41-47,共7页
Chemical Reagents
基金
武汉科技大学大学生创新创业训练计划项目(S202110488033)
国家自然科学基金资助项目(21901194)。
关键词
四苯乙烯
蒽
聚集诱导发光(AIE)
机械变色
荧光
tetraphenylethene
anthracene
aggregation induced emission(AIE)
mechanochromic luminescence
fluorescence
