Preparations and Electrochemical Characterizations of Conductive Porphyrin Polymers

被引：45

作者：

Day, Nicholas U. ^{[1
]}

Walter, Michael G. ^{[1
]}

Wamser, Carl C. ^{[1
]}

机构：

[1] Portland State Univ, Dept Chem, Portland, OR 97207 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2015年 / 119卷 / 30期

基金：

美国国家科学基金会;

关键词：

POLYANILINE FILMS; IMPEDANCE; SPECTROSCOPY; TETRAPHENYLPORPHYRINS; SUBSTITUENT; CAPACITANCE; ELECTRODES; PHENAZINE; SOLVENT; SURFACE;

D O I：

10.1021/acs.jpcc.5b02628

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

5,10,15,26=Tetrakis(4,aininophenyl)porphyrin (TAPP) undergoes,oxidatiVe polymerizatiOn to form electronically-conductive, nanofibrous structures in which the porphyrin units are linked by phenazine bridges:PolymerizationS by Chemical oxidation, electrochemical oxidation; and interfacial Oxidative polymerization are described. Poly-TAPP (pTAPP) films have been characterized using scanning electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy), and UV-vis spectroscopy. The polymer morphology is consistently nanofibrous, with some differences depending on the specific synthetic method. The polymer films show distinctive electrochromism at different redox and protonation states: A Pourbaix diagram correlates the proposed redox and protonation state S of the polymer-with applied potential, pH, and perceived color of the film. pTAPP shows the lowest resistance to oxidative doping/dedoping at low pH and potentials between +0.4 and +0.5 V vs Ag/AgCl.

引用

页码：17378 / 17388

页数：11

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