Abstract
A novel colorimetric and fluorescence turn-on probe TBP-B for the highly selective detection of hydrogen peroxide (H2O2) has been explored. TBP-B was non-emissive in aqueous solution and in the aggregate state. After TBP-B reacted with H2O2 in aqueous solution, the initial benzyl-borate unit in TBP-B was cleaved, resulting in the production of AIE-featured luminogen TBP, which exhibited an intense orange-red emission. Meanwhile, the color of the solution changed from red to light yellow. The sensing process was completed within 16 min, and the detection limit was as low as 160 nM. Moreover, the sensing mechanism was confirmed by optical spectral studies, NMR spectra and DFT calculations.
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