January 1, 2025RSC Advances0 citationsOpen Access

Influence of hydrogen bonding on twisted intramolecular charge transfer in coumarin dyes: an integrated experimental and theoretical investigation

Key Points

C30 exhibits twisted intramolecular charge transfer (TICT), enhancing its photophysical properties while C7 remains planar.
Spectroscopic evidence shows the influence of hydrogen bonding in coumarin dyes on their electronic behavior and charge transfer.
Theoretical calculations further support the experimental findings, providing a cohesive understanding of the molecular interactions.
Understanding these dynamics may have implications for the design and application of coumarin-based materials in photonic devices.

Abstract

Spectroscopic experiments and theoretical calculations reveal that C30 exhibits TICT, while C7 maintains a planar structure due to intramolecular H-bonding, thereby suppressing TICT. This finding advances the understanding of coumarin photophysics.

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Ge et al. (Wed,) studied this question.

synapsesocial.com/papers/68af5707ad7bf08b1eaddaaf https://doi.org/https://doi.org/10.1039/d5ra02669e