二乙烯基吩噻嗪两侧的四苯并咪唑：作为氮杂迈克尔受体的聚集诱导发光剂对生物胺蒸汽的浓度调节响应

Tetra-benzimidazoles flanking divinyl-phenothiazine: AIEgens as aza-Michael acceptors in concentration-tuned responses to biogenic amine vapors.

作者信息

Singh Sameer, Mandal Kalyaneswar, Chakravarty Manab

机构信息

Department of Chemistry, Birla Institute of Technology and Sciences, Pilani-Hyderabad Campus, Jawahar Nagar, Shamirpet, Hyderabad - 500078, India.

Tata Institute of Fundamental Research Hyderabad, 36/p Gopanpally, Hyderabad, Telangana - 500046, India.

出版信息

Chem Commun (Camb). 2025 Jan 7;61(4):728-731. doi: 10.1039/d4cc05725b.

DOI:10.1039/d4cc05725b

PMID:39661073

Abstract

Tetra-benzimidazole rotors flanking a divinyl-phenothiazine stator are realized as red AIEgens and newly identified as efficient aza-Michael acceptors for the identification of biogenic amine vapors. Weakly red-emissive solids display a blue-shifted turn-on emission by rapid aza-Michael addition and simultaneous reverse Knoevenagel reactions. Concentration variation imposes better crystallinity and facilitates radiative decay, offering distinct emissions.

摘要

围绕二乙烯基吩噻嗪定子的四苯并咪唑转子被实现为红色聚集诱导发光（AIE）分子，并新鉴定为用于识别生物胺蒸汽的高效氮杂迈克尔受体。弱红色发射的固体通过快速氮杂迈克尔加成和同时的逆克诺文格尔反应显示出蓝移的开启发射。浓度变化导致更好的结晶度并促进辐射衰变，从而产生独特的发射。