Spectroscopic, electrochemical and electrocolorimetric properties of novel 2-(2?-pyridyl)-1H-benzimidazole appended bay-substituted perylene diimide triads
By Pekdemir, Fatih; Orman, Efe Baturhan; Sel
Published in Journal of Photochemistry and Photobiology A: Chemistry
2019
Abstract
In this study, four new perylene diimide (PDI) derivatives incorporating 2-(2?-pyridyl)-1H-benzimidazole (2PBI) chromophores at the imide positions, in which 1 bearing non-bay-substituted perylene core, and those having four substituents at 1,6,7,12-bay positions of the perylene core, namely 2 bearing electron-withdrawing chlorine atoms, 3 bearing electron-donating 4-methoxyphenoxy groups and 4 bearing non-electron-donating 4-tert-butylphenoxy groups, respectively were synthesized and fully characterized by FT-IR, 1H NMR, 13C NMR, MALDI-TOF mass spectrometry and UV/Vis spectroscopy. The thermal properties were measured by thermogravimetric analysis (TGA) which showed that the materials (1-4) are thermally very stable (Td > 450
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