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Herein, we design a novel " crossbreeding " dye (BC-OH) within the second near-infrared (NIR-II) window based on BODIPY and chromene chromophores. BC-OH can serve as a platform to construct activatable NIR-II probes with small spectral crosstalk, thereby making a breakthrough in imaging in vivo H2O2 fluctuation in an APAP-induced liver injury model with high signal-to-background ratio. [ABSTRACT FROM AUTHOR]

A curcuminoid difluoroboron-based tumor-targeting GGT-activatable fluorescent probe (Glu-DFB-biotin) is designed, which has remarkable characteristics of dual-channel and light-up near-infrared (NIR) fluorescence. Furthermore, Glu-DFB-biotin can differentiate hepatic cancer cells from normal cells and is successfully employed for real-time tracking of endogenous GGT activity in living cells. [ABSTRACT FROM AUTHOR]

The real-time monitoring of nitric oxide (NO) at the subcellular level is still a great challenge. To attain this goal, we developed a fast and selective near-infrared (NIR) fluorescent probe for the targeted tracing of endogenous NO. This probe possesses vital features for the real-time detection of intracellular NO including a significant turn-on NIR response, high specificity, and a fast response by a controlled photoinduced electron transfer (PET) process, which is applicable to the real-time monitoring of endogenous NO in mitochondria. [ABSTRACT FROM AUTHOR]