A Novel Benzimidazole-π-Bridge-Dicyanoisophorone-Type Near-Infrared Fluorescent Probe for Rapid Monitoring of Hydrogen Sulfide Based on a Cascade Thiolysis Strategy.
Herein, we designed a dual DNP-caged near-infrared probe, N-Bu-DCIB-2DNP, by conjugating dicyanoisophorone (DCI) with an N-alkylated benzimidazole (B) through double vinylene linkers. This probe features two responsive sites-the DNP ether on the donor and the DNP-functionalized electron-deficient quaternary carbon on t...