Synthesis and electropolymerization properties of [(4-{3-[3-(dimethylamino)phenoxy]propoxylphenyl}metoxy] and [(4-{3-[3-(diethylamino)phenoxy]propoxy}phenyl)metoxy] substituted silicon naphthalocyanines

摘要

In this study, the first synthesis of axially disubstituted silicon naphthalocyanines bearing electropolymerizable bis[(4-{3-[3-(dimethylamino)phenoxy]propoxyl}phenyl)metoxy], bis[(4-{3-[3-(diethylamino)phenoxy]propoxy}phenyl)metoxy] units has been reported. Aggregation behavior of silicon naphthalocyanines were examined in different solvents and concentrations. In all studied solvents and concentrations, silicon naphthalocyanines were non-aggregated. Electrochemical and electropolymerization properties of the silicon naphthalocyanines were studied by cyclic and square wave voltammetry. Electrochemical studies reveal that axially disubstituted silicon naphthalocyanines gave only naphthalocyanine based reduction process during the cathodic potential scans, but they were electropolymerized on the working electrode during the anodic potential scan because of the oxidative electropolymerization of dimethylamino and diethylamino groups on the substituents of the complexes. Therefore, this study is the first example of electropolymerization of axially disubstituted silicon naphthalocyanines. (C) 2017 Elsevier B.V. All rights reserved.