Journal
MATERIALS CHEMISTRY FRONTIERS
Volume 3, Issue 1, Pages 57-63Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8qm00425k
Keywords
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Funding
- National Natural Science Foundation of China [21474009, 51673024, 21490574]
- Graduate Technological Innovation Project of Beijing Institute of Technology [2018CX10005]
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Fluorescent probing is one of the most powerful methods for bioimaging and/or detecting certain biological species. However, the problem of aggregation-caused quenching in aqueous environments limits the development of high performance fluorophores. In this study, three compounds were designed from triphenylpyrrole (TPP) derivatives with aggregation-induced emission (AIE) characteristics and were applied to real-time mitochondrial imaging. These TPP derivatives emitted near-infrared (NIR) signals by using indolium as an acceptor, both pyrrole and triphenylamine as donors, and ethenylidene as a -bridge between the acceptors and donors. The combination of AIE features with NIR emission provides a wash-free procedure for staining the mitochondria in various live cells in less than 10 s. Moreover, the process of signal turn-on could be tracked by taking full advantage of the slow aggregation behavior of the dyes. In addition, the dyes also showed excellent photostabilities under laser irradiation for up to 6 h.
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