Modification of indium-tin oxide (ITO) glass with aziridine provides a surface of high amine density

Journal of Colloid and Interface Science
Chang Ok KimJoon Won Park

Abstract

The surface of indium-tin oxide (ITO) substrates was successfully modified with aziridine. Modification of the surface was achieved through facile ring-opening, and hyperbranching polymerization of the ring-strained heterocycle initiated from the reactive group on the surface. Amine density of the aziridine-modified ITO measured with UV-vis spectrophotometry is 10 amines/nm2. Cyclic voltammetric analysis showed that the aziridine-modified electrode was less active for Ru(NH3)6(3+) in comparison with the pristine electrode, while no difference was observed for Fe(CN)6(4-). Electrochemical impedance spectroscopic experiments unveiled that the modified electrode was more efficient for electron transfer to the latter species than to the former.

References

Jun 22, 2000·Journal of Colloid and Interface Science·H J KimJ W Park

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Citations

Mar 23, 2005·Nature Methods·Christopher J FlaimSangeeta N Bhatia
Apr 24, 2013·ChemSusChem·Domenico A Cristaldi, Antonino Gulino
Jun 9, 2015·ACS Applied Materials & Interfaces·Bin WeiDavid C Martin
Dec 13, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Victor M BermudezAlberto Piqué

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