BOPAHY: a doubly chelated highly fluorescent pyrrole-acyl hydrazone -BF2 chromophore

Chem Commun (Camb). 2020 May 28;56(43):5791-5794. doi: 10.1039/d0cc01131b. Epub 2020 Apr 23.

Abstract

New easily functionalisable and highly fluorescent BOPAHY chromophores are synthesised via a one-pot two-step reaction starting from commercially available pyrrole-2-carbaldehydes and respective acyl hydrazides in the presence of BF3·OEt2. Most importantly, all BOPAHY dyes show excellent photophysical properties with quantum yields up to 0.92. Steady-state spectroscopy and quantum chemical calculations provide a first insight into these promising properties.