Synthesis, characterization, photophysical and electrochemical properties of a new non?planar perylene diimide with electron donating substituent
By Mostafanejad, S. Melika; Bodapati, Jagadeesh B.;
Published in Optical Materials
2018
Abstract
A new nonplanar and soluble, donor?acceptor?donor system (3) based on a perylene diimide chromophore (1) consisting on 5-amino-4-cyano-3-methylthiophene-2-carboxamide (2) as electron donating unit at imide position has been synthesized. The photophysical and electrochemical properties were systematically investigated in different solvents. All the results of structural characterization reveal that the thiophene units are not coplanar with the core of perylene diimide. Spectroscopic properties of 3 in solution show variations with the organic solvent used. In the polar aprotic and strongly electron donating solvents, such as DMF, DMAC and NMP, 3 exhibits intense absorption features in the UV
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