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Intelligent Fluorescence Probe with Turn‐on Properties By a “See‐Saw” Balance of Visible and Near‐infrared Fluorescence
Author(s) -
Jing Titao,
Wu Ziye,
Ruan Zheng,
Li Tuanwei,
Jiang Jun,
Yan Lifeng
Publication year - 2017
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.201700122
Subject(s) - fluorescence , cyanine , near infrared spectroscopy , photochemistry , pyrene , quenching (fluorescence) , chemistry , infrared , conjugated system , materials science , polymer , optics , organic chemistry , physics
Bioimaging requires probes for tracing, especially in the near‐infrared (NIR) region. Herein, A Schiff base dye conjugated with both pyrene and a cyanine (cy7) NIR fluorophores has been synthesized, which showed a novel “see‐saw” fluorescent performance via the combination of aggregation‐induced emission (AIE) and aggregation‐caused quenching (ACQ). The new dye is always switched on in terms of fluorescence by the “see‐saw” balance of the visible and NIR fluorescence. The system is fluorescent in the visible region when it is it is its aggregated state as a result of AIE while it emits NIR fluorescence in the single molecule state. The as‐prepared dye has many potential applications, especially in the field of bioimaging, which was confirmed by in vitro cell experiments.