The emission enhancement of the NIR distyryl Bodipy dyes by the indirect S0 → S2 excitation and their application towards a Hg2+ probe†
Abstract
A new strategy for enhancing the brightness of the NIR distyryl Bodipy derivatives was proposed based on the indirect S0 → S2 excitation, and applied to fluorescence turn-on detection of Hg2+, by which the marked fluorescence enhancement (2.5-fold) and the high sensitivity for Hg2+ (up to 3 ppb) could be realized.