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Core‐Modified meso ‐Aryl Hexaphyrins with an Internal Thiophene Bridge: Structure, Aromaticity, and Photodynamics
Author(s) -
Karthik Ganesan,
Sneha Mahima,
Raja V. Prabhu,
Lim Jong Min,
Kim Dongho,
Srinivasan A.,
Chandrashekar Tavarekere K.
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201203737
Subject(s) - thiophene , bridge (graph theory) , aryl , bridging (networking) , chemistry , computer science , sulfur , singlet state , photochemistry , combinatorial chemistry , organic chemistry , physics , atomic physics , computer network , medicine , alkyl , excited state
Take the shortcut : The synthesis of core‐modified meso aryl hexaphyrins with an internal thiophene bridge is reported. Introduction of the thiophene bridge alters the electronic structure as well as the π‐electron circuit, resulting in increases in singlet lifetime ( τ s ) and the two‐photon absorption (TPA) cross‐section. Furthermore, for the sulfur derivative, the internal bridging thiophene participates in a π‐electron conjugation pathway.