Abstract
Excited-state intramolecular proton transfer (ESIPT)-based fluorophores with two-photon excitation fluorescence (TPEF) are rare. Our aim with this research was to develop ESIPT-based fluorophores exhibiting TPEF. Herein, we used 4-hydroxyisoindoline-1,3-dione as a scaffold to develop a two-photon fluorescent probe BHID-Bpin, for the detection of peroxynitrite (ONOO-). BHID-Bpin exhibits excellent selectivity, sensitivity, and fast response towards ONOO- in PBS buffer solution (10 mM, pH = 7.40). Additionally, BHID-Bpin displays high photo-stability under two-photon irradiation at 750 nm. Furthermore, the probe can image endogenous ONOO- in HeLa cells and exogenous ONOO- in rat hippocampal slices at a depth of 110 μm.
| Original language | English |
|---|---|
| Pages (from-to) | 11084-11087 |
| Number of pages | 4 |
| Journal | Chemical Communications |
| Volume | 57 |
| Issue number | 84 |
| DOIs | |
| State | Published - 28 Oct 2021 |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry.