Facile modification of ITO electrodes with functional materials through catalytic grafting of N-hydroxysuccinimidyl-ester-functionalized methallylsilane

S. Senthil Kumar, Green Baek, Sera Lee, Chul-Ho Jun, Dongil Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A facile method for the preparation of modified indium tin oxide (ITO) electrodes and their use in amperometric sensing of H 2O 2 are described. ITO surface was first derivatized by acid-catalyzed grafting of N-hydroxysuccinimidyl-ester-functionalized methallylsilane at room temperature, followed by immobilization of functional materials such as gold nanoparticle and thionine by amide coupling reaction. The modification process was monitored using contact angle, scanning electron microscopy and electrochemical measurements, which revealed the controllability and high efficiency of this modification method. Thionine-modified ITO electrode exhibited excellent electrocatalytic activity towards the reduction and amperometric determination of H 2O 2, demonstrating the potential of this modification strategy in electrocatalysis and amperometric sensing.

Original languageEnglish
Pages (from-to)123-126
Number of pages4
JournalElectrochemistry Communications
Volume19
Issue number1
DOIs
Publication statusPublished - 2012 Jun 1

Fingerprint

Functional materials
Tin oxides
Indium
Esters
Electrodes
Electrocatalysis
Controllability
Amides
Gold
Contact angle
Nanoparticles
Scanning electron microscopy
Acids
indium tin oxide
Temperature
thionine

All Science Journal Classification (ASJC) codes

  • Electrochemistry

Cite this

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abstract = "A facile method for the preparation of modified indium tin oxide (ITO) electrodes and their use in amperometric sensing of H 2O 2 are described. ITO surface was first derivatized by acid-catalyzed grafting of N-hydroxysuccinimidyl-ester-functionalized methallylsilane at room temperature, followed by immobilization of functional materials such as gold nanoparticle and thionine by amide coupling reaction. The modification process was monitored using contact angle, scanning electron microscopy and electrochemical measurements, which revealed the controllability and high efficiency of this modification method. Thionine-modified ITO electrode exhibited excellent electrocatalytic activity towards the reduction and amperometric determination of H 2O 2, demonstrating the potential of this modification strategy in electrocatalysis and amperometric sensing.",
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Facile modification of ITO electrodes with functional materials through catalytic grafting of N-hydroxysuccinimidyl-ester-functionalized methallylsilane. / Kumar, S. Senthil; Baek, Green; Lee, Sera; Jun, Chul-Ho; Lee, Dongil.

In: Electrochemistry Communications, Vol. 19, No. 1, 01.06.2012, p. 123-126.

Research output: Contribution to journalArticle

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AB - A facile method for the preparation of modified indium tin oxide (ITO) electrodes and their use in amperometric sensing of H 2O 2 are described. ITO surface was first derivatized by acid-catalyzed grafting of N-hydroxysuccinimidyl-ester-functionalized methallylsilane at room temperature, followed by immobilization of functional materials such as gold nanoparticle and thionine by amide coupling reaction. The modification process was monitored using contact angle, scanning electron microscopy and electrochemical measurements, which revealed the controllability and high efficiency of this modification method. Thionine-modified ITO electrode exhibited excellent electrocatalytic activity towards the reduction and amperometric determination of H 2O 2, demonstrating the potential of this modification strategy in electrocatalysis and amperometric sensing.

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