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Through-space aromatic character in excimers

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Abstract

Aromaticity, though widely used to delineate diverse photochemical phenomena, remains to be examined in excimers, a fundamental and extensively studied entity in the excited states. Herein, the first theoretical evidence for the excited state through-space aromatic character in triplet state (T1) excimers of benzene, naphthalene and anthracene is reported using multiple aromaticity descriptors based on magnetic, electronic and geometric criteria. The calculated chemical shifts and induced current densities manifest the presence of transannular π-electronic currents in the excimers. The results open up enormous research potential from exploring the possibility of through-space aromatic character in singlet excimers to its possible implications in photoexcited state processes of aromatic supramolecular systems.

Graphical abstract: Through-space aromatic character in excimers

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Publication details

The article was received on 16 Sep 2019, accepted on 21 Nov 2019 and first published on 21 Nov 2019


Article type: Communication
DOI: 10.1039/C9CC07251A
Chem. Commun., 2020, Advance Article

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    Through-space aromatic character in excimers

    V. Vijay, M. Madhu, R. Ramakrishnan, A. Benny and M. Hariharan, Chem. Commun., 2020, Advance Article , DOI: 10.1039/C9CC07251A

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