Molecular engineering of a pi-conjugated polymer film of the azo dye Bismarck Brown Y

Rsc Advances Volume: 6 Issue: 103 Pages: 101318-101322 Published: 2016

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Writers: M. F. S. Teixeira, M. M. Barsan and C. M. A. Brett

Keywords: polymer; film

Abstract: The construction of molecular nanostructures with tunable topological structures is a challenge in molecular engineering. We report a novel organic π-conjugated chromophore obtained by the electropolymerization of Bismarck Brown Y (4,4′-[1,3-phenylenedi(E)-2,1-diazenediyl]di(1,3-benzenediamine)), with important potential applications in optical and electrochemical materials. The study comprises evidence regarding the redox transitions during the electropolymerization process by potential cycling and information regarding the physico-chemical properties of the polymerized film by UV-Vis spectroscopy, electrochemical impedance spectroscopy and scanning electron microscopy. The spectral study indicates a π-conjugated planar structure with predominance of the cis isomer. The polymer with diverse molecular conformation paves the way to fabricate molecular miniature devices with various desired functionalities.

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