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Issue 9, 2011
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Optical and electrochemical properties of tunable host–guest complexes linked to plasmonic interfaces

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Abstract

This article describes the use of localized surface plasmon resonance (LSPR) interface to detect complexation/decomplexation steps of a controllable host–guest system at the solid–liquid interface. The LSPR interfaces consist of a sandwiched structure comprising a tin-doped indium oxide (ITO) substrate, gold nanostructures (Au NSs) and a thin ITO film overcoating. “Click” chemistry was used to covalently link an alkyne-functionalized π-electron deficient tetracationic cyclophane cyclobis(paraquat-p-phenylene) (CBPQT4+) unit to an azide-terminated LSPR interface. The modified interfaces were characterized using X-ray photoelectron spectroscopy (XPS), cyclic voltammetry and UV-vis transmission spectroscopy. Tetrathiafulvalene (TTF) was used as a model guest molecule to demonstrate the possibility to follow the complexation/decomplexation events by monitoring the change in the LSPR signal. The results demonstrate that redox controlled host–guest complexation at the surface can be monitored effectively using LSPR.

Graphical abstract: Optical and electrochemical properties of tunable host–guest complexes linked to plasmonic interfaces

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Publication details

The article was received on 30 Sep 2010, accepted on 02 Dec 2010 and first published on 12 Jan 2011


Article type: Paper
DOI: 10.1039/C0JM03293J
Citation: J. Mater. Chem., 2011,21, 3006-3013
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    Optical and electrochemical properties of tunable host–guest complexes linked to plasmonic interfaces

    F. Barka-Bouaifel, J. Niedziółka-Jönsson, X. Castel, O. Saison, A. Akjouj, Y. Pennec, B. Djafari-Rouhani, P. Woisel, J. Lyskawa, L. Sambe, G. Cooke, N. Bezzi, R. Boukherroub and S. Szunerits, J. Mater. Chem., 2011, 21, 3006
    DOI: 10.1039/C0JM03293J

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