化学
荧光团
噻吩
共轭体系
聚集诱导发射
红外线的
光化学
苯乙烯
纳米技术
近红外光谱
聚合物
共聚物
荧光
有机化学
光学
材料科学
物理
作者
Weijie Chen,Chen Zhang,Huijuan Chen,Kun Zang,Sheng Hua Liu,Yuan Xie,Ying Tan,Jun Yin
标识
DOI:10.1021/acs.analchem.0c04260
摘要
Thienoisoindigo as a popular conjugated skeleton has been constantly applied in the construction of organic optoelectronic materials. Exploring its new applications in fluorescent sensors and bioimaging is helpful to extend its potential. In this work, a thienoisoindigo fluorophore was first selected as a building block to be applied in the construction of the near-infrared fluorescent materials with an aggregation-induced emission manner through introducing triarylamine, thiophene-bridged triarylamine, and N,N-dimethyl styrene, respectively. These fluorescent agents showed the near-infrared emission and possessed typical aggregation-induced emission behavior. Although they had low band gaps and near-infrared emission, they presented remarkable photostability. Especially, thiophene-bridged triarylamine and N,N-dimethyl styrene-coated thienoisoindigos exhibited strong lysosomal targeting capability, and they could also serve for fluorescence imaging in vivo.
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