The role of twisting in driving excited-state symmetry breaking and enhanced two-photon absorption in quadrupolar cationic pyridinium derivatives

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Abstract
Excited-state twisting in quadrupolar pyridinium derivatives proved necessary to uncouple the donor (D) and acceptor (A+) groups, and reach a structurally, as well as electronically, symmetry broken intramolecular charge transfer (SB-ICT) state.
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  • Ministero dell’Istruzione, dell’Università e della Ricerca (Dipartimenti di Eccellenza 2018– 2022)

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