Electrochemical Formation and Characterization of Copolymers Based on N-Pyrrole Derivatives.

Citation:

Regina Okner, Domb, Abraham J. , and Mandler, Daniel. . 2007. “Electrochemical Formation And Characterization Of Copolymers Based On N-Pyrrole Derivatives.”. Biomacromoleculesbiomacromolecules, 8, Pp. 2928 - 2935.

Abstract:

Org. coatings based on N-(2-carboxyethyl)pyrrole (PPA) and a Bu ester of PPA (BuOPy) were deposited via electrochem. oxidn. The homo- and copolymers were electropolymd. on glassy C and stainless steel in MeCN using Bu4NBF4B as the electrolyte. The mechanism of deposition on stainless steel was studied by chronoamperometry and by the tapping and phase angle imaging modes of at. force microscopy. The electrochem. properties and growth of the films were studied by cyclic voltammetry. The compn. of the copolymers was detd. by reflection-absorption FTIR spectroscopy. While the hydrophilic monomer PPA undergoes progressive nucleation followed by instantaneous growth the hydrophobic BuOPy nucleates instantaneously. The rate of BuOPy electropolymn. was higher than that of PPA, and the resulting film was thicker yet fluffier. Copolymer films were enriched by BuOPy as compared with the electropolymn. soln., which is attributed to the faster rate of electropolymn. of BuOPy than PPA. [on SciFinder(R)]