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Pyrene Appended Free‐base, Phosphorus(V) and Gallium(III) Corroles and Their β , β ′‐Linked Corrole Dimers: Synthesis, Photophysical and Electrochemical Properties
Author(s) -
Sujesh S.,
Basumatary Biju,
Kumar Amit,
Sankar Jeyaraman
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202000807
Subject(s) - corrole , chemistry , pyrene , photochemistry , electrochemistry , density functional theory , dimer , free base , monomer , fluorescence , organic chemistry , computational chemistry , polymer , salt (chemistry) , physics , electrode , quantum mechanics
Pyrene appended free‐base, phosphorus(V) and gallium (III) corrole conjugates were synthesized and characterized. Efficient β‐β′ dimerization of corroles was achieved by oxidation with p ‐chloranil in moderate yield from their respective metallated corroles. The weak ground state electronic coupling between pyrene and corrole units was established by photophysical and electrochemical investigations. The fluorescence spectral studies showed a red shifted emission maximum for dimer with respect to their monomeric counterpart due to possible π‐conjugation and supported by the density functional theory (DFT). The electrochemical investigation revealed multiple oxidation associated with the corrole and pyrene centers.