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Intramolecular hydrogen bonds play an important role in the fluorescence of 2‐ortho‐aminophenyl pyridines, shifting the emission colour from deep blue to cold white. These multi‐emissive dynamic systems bearing excited‐state intramolecular proton transfer (ESIPT) moieties are susceptible to pH. The cover feature illustrates how DFT and td‐DFT calculations can elucidate why different levels of protonation...
The dynamic nature of excited‐state intramolecular proton transfer (ESIPT) and its effect on emission spectra is an attractive strategy to create multi‐emissive dyes. Here we describe the behavior of a series of hydrogen‐bonded triphenylpyridines with a set of donor–acceptor combinations that allowed us to perceive the influence of each substitution on the photophysical properties of the dyes. The...