Near-Infrared Aggregation-Induced Emission (AIE) Molecules Based on Coupling of Triarylamine-Modified Benzothiadiazole Units

被引：0
作者：
Dong, Zixuan [1 ]
Su, Junjun [1 ]
Pan, Hongfei [1 ]
Ren, Xiangkui [1 ]
Chen, Zhijian [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn, Tianjin 300072, Peoples R China
来源：
CHINESE JOURNAL OF ORGANIC CHEMISTRY | 2025年 / 45卷 / 01期
基金：
中国国家自然科学基金;
关键词：
aggregation-induced emission (AIE); near-infrared luminescence; benzothiadiazole; triarylamine; DYES; RED;
D O I：
10.6023/cjoc202407014
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Three new near-infrared (NIR) aggregation-induced emission (AIE) molecules were constructed by palladium- catalyzed coupling reaction with triarylamine modified benzothiadiazole as a donnor-acceptor (D-A) unit. Their structures were charaterized by H-1 NMR, C-13 NMR and HRMS. The results of absorption spectroscopic and fluorescence spectroscopic measurements indicated that the absorption maxima of these three compounds in dichloromethean solution were at 525, 521 and 495 nm, respectively, while their emission bands were located at 600 similar to 1050 nm. Solvent-dependent spectrosopic studies and theorectical calculations revealed intramolecular charge transfer (ICT) charateristics of these compounds. These compounds exhibited NIR AIE in tetrahydrofuran (THF)/H2O with emission wavelengths 600 similar to 1000 nm and fluorescence quantum yields up to 13%, 10% and 4%, respectively. The results of dynamic light scattering (DLS) and atomic force microscope (AFM) showed that compounds 1 similar to 3 formed spherical aggregates of about 80 nm in THF/H2O (V : V=8 : 2).
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页码：205 / 211
页数：7
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