Title
The electrochemical detection of 4-chlorophenol at gold electrodes modified with different phthalocyanines The electrochemical detection of 4-chlorophenol at gold electrodes modified with different phthalocyanines
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Lausanne ,
Subject
Chemistry
Source (journal)
Sensors and actuators : B : chemical. - Lausanne
Volume/pages
128(2008) :2 , p. 494-499
ISSN
0925-4005
ISI
000252792100020
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Because of their toxicity to humans and their tendency to bioaccumulate in the food chain, the detection of chlorophenols has been investigated intensively. This paper compares the oxidation of 4-chlorophenol on a bare gold electrode to its detection on gold electrodes electrochemically modified with either cobalt(II) tetrasulphonated phthalocyanine (CoTSPc) or 3,4′,4″,4triple prime-copper(II) tetrasulphonated phthalocyanine (CuTSPc). Results show that the electrochemical behaviour of 4-chlorophenol depends on the molecular structure of the phthalocyanine thin film layers on the gold surface. In addition, the influence of the coordinating properties of the phthalocyanines on the sensitivity of the measurement and the fouling of the electrode material is discussed.
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