应用化学 ›› 2023, Vol. 40 ›› Issue (9): 1322-1329.DOI: 10.19894/j.issn.1000-0518.230019

• 研究论文 • 上一篇    下一篇

含甲氧基四苯乙烯咪唑化合物的合成、光物理性质、理论计算及细胞成像

仝大伟1, 孔明1(), 向育斌2   

  1. 1.南京市产品质量监督检验院,南京 210019
    2.南京信息工程大学化学与材料学院,南京 210044
  • 收稿日期:2023-02-09 接受日期:2023-05-24 出版日期:2023-09-01 发布日期:2023-09-14
  • 通讯作者: 孔明
  • 基金资助:
    南京市市场监督管理局重点科技项目(Kj2021021);江苏省“双创博士”计划项目(JSSCBS20221736);国家自然科学基金(22205114);江苏省自然科学基金(BK20190776)

Synthesis, Photophysical Properties, Theoretical Calculation and Cell Imaging of a Tetraphenylethene Imidazole Compound with Methoxy Group

Da-Wei TONG1, Ming KONG1(), Yu-Bin XIANG2   

  1. 1.Nanjing Institute of Product Quality Inspection,Nanjing 210019,China
    2.School of Chemistry and Materials Science,Nanjing University of Information Science & Technology,Nanjing 210044,China
  • Received:2023-02-09 Accepted:2023-05-24 Published:2023-09-01 Online:2023-09-14
  • Contact: Ming KONG
  • About author:mingkong@smail.nju.edu.cn
  • Supported by:
    the Key Science and Technology Program of Nanjing Administration for Market Regulation(Kj2021021);the Shuangchuang Program of Jiangsu Province(JSSCBS20221736);the National Natural Science Foundation of China(22205114);the Natural Science Foundation of Jiangsu Province(BK20190776)

摘要:

通过一步法合成了一例含甲氧基四苯乙烯咪唑化合物4,5-双-4-甲氧基苯基-2-(4-(1,2,2-三苯基乙烯基)苯基)-1-咪唑(BTI),通过核磁共振波谱仪(NMR)、质谱(MS)和元素分析等技术手段对BTI进行了全面的表征,解析了化合物的单晶结构,通过紫外-可见吸收光谱和荧光发射光谱研究了BTI的光物理性质,借助理论计算对化合物的激发态性质进行了阐述,最后研究了化合物BTI在细胞成像方面的应用。结果表明,该化合物表现出明显的分子内电荷转移(ICT)型聚集诱导发光(AIE)性质,光谱实验数据与理论计算结果吻合较好。细胞成像研究显示化合物BTI可以很好地穿越人肝癌细胞(HepG2)的细胞膜,并可进行单、双光子激发共聚焦荧光显影。

关键词: 聚集诱导发光, 晶体结构, 理论计算, 双光子, 细胞显影

Abstract:

A titled tetraphenylethene imidazole compound with methoxy group named 4,5-bis(4-methoxyphenyl)-2-(4-(1,2,2-triphenylvinyl)phenyl)-1H-imidazole(BTI) is synthesized by one step. The target BTI is fully characterized by NMR spectroscopy, mass spectrometry and elemental analysis. The single crystal structure of BTI is obtained by evaporation of the mother solutions. The photophysical properties of BTI are studied by UV-Vis absorption and fluorescence emission spectrum. By means of theoretical calculation, the excited state properties of BTI are elaborated. Finally, the application of BTI in cell imaging is studied. The results show that BTI exhibits typical aggregation-induced emission (AIE) properties with intramolecular charge transfer (ICT) character, and the experimental spectral data agree well with the theoretical calculation results. The cell imaging study shows that BTI can well penetrate the HepG2 cell membrane and perform one-and two-photon excitated confocal fluorescence imaging.

Key words: Aggregation-induced emission, Crystal structure, Theoretical calculation, Two-photon, Cell imaging

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