有机化学 ›› 2024, Vol. 44 ›› Issue (8): 2545-2553.DOI: 10.6023/cjoc202403032 上一篇    下一篇

研究论文

聚集诱导发光活性氟硼吡啶肼醛腙染料的合成、晶体结构及光学性质

宫清宝a, 吕翔b, 于长江b,*(), 李婉婉b, 赵全胜b,*(), 焦莉娟b, 郝二红b,*()   

  1. a 皖南医学院脑科学研究院 皖南医学院第一附属医院/弋矶山医院神经外科 安徽芜湖 241001
    b 安徽师范大学化学与材料科学学院 功能分子固体教育部重点实验室 安徽芜湖 241002
  • 收稿日期:2024-03-22 修回日期:2024-05-11 发布日期:2024-06-13
  • 基金资助:
    国家自然科学基金(22271002); 安徽省自然科学基金(2008085QB67); 安徽省自然科学基金(2308085J14); 安徽省高等学校科学研究项目(2023AH050149); 安徽省高等学校科学研究项目(KJ2021A0126); 安徽省教育厅高校优秀科研创新团队(2022AH010073)

Aggregation-Induced Emission (AIE) Active Fluoroboronated Pyridylhydrazinyl Aldehyde Hydrozone Dyes: Synthesis, Crystal Structure and Optical Properties

Qingbao Gonga, Xiang Lüb, Changjiang Yub(), Wanwan Lib, Quansheng Zhaob(), Lijuan Jiaob, Erhong Haob()   

  1. a Department of Neurosurgery, The First Affiliated Hospital/Yijishan Hospital of Wannan Medical College, Institutes of Brain Science, Wannan Medical College, Wuhu, Anhui 241001
    b Key Laboratory of Functional Molecular Solids, Ministry of Education; School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002
  • Received:2024-03-22 Revised:2024-05-11 Published:2024-06-13
  • Contact: E-mail: yuchj@ahnu.edu.cn; zqs2012@ahnu.edu.cn; haoehong@ahnu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(22271002); Anhui Provincial Natural Science Foundation(2008085QB67); Anhui Provincial Natural Science Foundation(2308085J14); Scientific Research Project of Anhui Provincial Colleges and Universities(2023AH050149); Scientific Research Project of Anhui Provincial Colleges and Universities(KJ2021A0126); Excellent Scientific Research and Innovation Team in Natural Sciences of Anhui Provincial Department of Education(2022AH010073)

通过简单易得的氯代2-肼基吡啶和芳香醛衍生物缩合与氟硼配位, 一锅两步反应合成了系列新型的氟硼配位吡啶肼基醛腙染料, 将其命名为BOPAHs. 这些染料分子通过核磁共振、高分辨质谱和晶体结构进行了表征. 其主吸收在400~600 nm范围内, 发射波长在500~700 nm范围内. 随着溶剂极性的增加, 它们的吸收/发射峰逐渐红移, 同时斯托克斯位移增大, 表明这些分子具有明显的分子内电荷转移特性. 同时, 通过密度泛函理论计算进一步证实了这一特性. 此外, 这些BOPAHs在溶液中的荧光较弱, 但它们都表现出明显的聚集诱导发射特性, 可能是由于分子在聚集态下构象固定导致弱的分子间相互作用所致.

关键词: 聚集诱导发光, 有机硼染料, 有机合成, 光学性质

A new family of fluoroboronated pyridylhydrazinyl aldehyde hydrozone fluorophores named BOPAHs were developed via a simple one-pot two-step reaction from chloro-2-hydrazinylpyridine and aromatic aldehyde derivatives. They were well characterized by NMR, HRMS, and X-ray crystal structures. They exhibit main absorption from 400 nm to 600 nm and emission bands from 500 nm to 700 nm. The absorption/emission bands redshift with increased polarity of solvents indicate a distinct intramolecular charge transfer characteristic, further confirmed by density functional theory (DFT) calculations. These BOPAHs display weak fluorescence in solutions, but they exhibit obvious aggregation-induced emission properties, possibly resulting from weak intermolecular interactions by fixing the molecular conformations in aggregate states.

Key words: aggregation-induced emission, organoboron dyes, organic synthesis, optical properties