Feasibility of multiple excited-state proton transfer processes in hydroxyquinoline-containing benzobisimidazole dyes†
Tatiana
Munteanu, 
a
Gabriel
Canard,
a
Olivier
Siri,
*a
Denis
Jacquemin,
*de
Anton
Georgiev
*c
and
Simon
Pascal
*ad
a
Gabriel
Canard,
a
Olivier
Siri,
*a
Denis
Jacquemin,
*de
Anton
Georgiev
*c
and
Simon
Pascal
*ad
Abstract
Two new benzobisimidazole platforms incorporating 7-hydroxyquinoline moieties were synthesized and characterized to explore potential multiple proton transfer processes. Combining experimental analysis with theoretical insights, we investigated the photophysical properties and excited-state proton transfer phenomena within these systems and found that double proton transfer is unlikely to happen.
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