Formation, characterization and electrochemical properties of novel tetrasubstituted cobalt phthalocyanines bearing tetrahydropyran, furan and coumarin moieties

被引：11

作者：

Chohan, Sumayya ^{[1
]}

Booysen, Irvin Noel ^{[1
]}

Mambanda, Allen ^{[1
]}

Akerman, Matthew Piers ^{[1
]}

机构：

[1] Univ KwaZulu Natal, Sch Chem & Phys, Private Bag X01, ZA-3209 Pietermaritzburg, South Africa

来源：

INORGANICA CHIMICA ACTA | 2016年 / 447卷

关键词：

Metallophthalocyanine; Tetrahydropyran; Furan; Spectroelectrochemistry; Electrocatalysis; L-Cysteine; GLASSY-CARBON ELECTRODE; SELF-ASSEMBLED MONOLAYER; L-CYSTEINE; TETRASULFONATED PHTHALOCYANINE; ELECTROCATALYTIC OXIDATION; VOLTAMMETRIC DETERMINATION; ZINC PHTHALOCYANINES; ASCORBIC-ACID; NITRIC-OXIDE; METAL-FREE;

D O I：

10.1016/j.ica.2016.04.021

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cobalt phthalocyanines (CoPcs) bearing peripherally tetrasubstituted tetrahydropyran (thp) or furan (fur) moieties were formed and spectroscopically characterized. Structural elucidations of 4-(tetrahydropyran-2-methoxy)phthalonitrile (1) and 4-(furan-2-methylthio) phthalonitrile (2) were confirmed via single crystal X-ray analysis. The redox properties of CoPc-thp (3) and CoPc-fur (4) were investigated via cyclic and squarewave voltammetry as well as UV-Vis spectroelectrochemistry. Glassy carbon electrodes (GCEs) modified with 3, 4 and a previously reported coumarin (cou) substituted CoPc (CoPc-cou, 5), were tested for their electrocatalytic activities toward L-cysteine. While the bare GCE and 4-GCE showed no peaks for L-cysteine oxidation in the 0.0-0.70 V potential window; 3-GCE and 5-GCE showed peaks at 0.42 V and 0.52 V, respectively. Kinetic parameters were determined by chronoamperometry studies. L-Cysteine oxidation using 3-GCE was found to proceed at a faster rate than 5-GCE. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：183 / 191

页数：9

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