We report a two-photon fluorescent probe (PN1) that can be excited by 750 nm femto-second pulses, shows high photostability and negligible toxicity, and can visualize H(2)O(2) distribution in live cells and tissue by two-photon microscopy.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4096517PMC
http://dx.doi.org/10.1039/c1cc13583jDOI Listing

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