Development of a novel fluorescence enhancement probe for detection of Sn in organisms, with high selectivity and sensitivity, is of great interest but remains a great challenge. Herein, an ICT-based fluorescence probe TPPB was rationally developed to act as an 'enhancement' luminescent and "naked-eye" indicator for Sn detection. Importantly, spectroscopic studies indicated that TPPB was a fluorescence enhancement sensor for Sn with rapid response, low detection limit (0.116 μM) and excellent binding constant (1.6 × 10 M). The mechanism of TPPB response to Sn was further proved by H NMR titration, and enhancement calculations. Furthermore, TPPB is applied as a fluorescence probe for imaging in Hela cells, indicated that it can be potentially applied for Sn sensing in biological fields.
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| http://dx.doi.org/10.1039/d0ra07330j | DOI Listing |
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