Cu²⁺ chemosensing behaviour of self-organized micro-array structures of a donor–acceptor bichromophoric compound anchored onto Ag nanoisland films

This work reports on the Cu²⁺ chemosensing behaviour of self-organized micro-array structures of a novel donor–acceptor bichromophoric compound anchored onto Ag nanoisland films. The system exhibits quenching of the fluorescence in the presence of Cu²⁺ ions, with detection range extending from 2×10⁻...

Full description

Saved in:
Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2011-07, Vol.155 (1), p.46-52
Main Authors: Del Rosso, T, Giorgetti, E, Margheri, G, Rindi, A, Muniz-Miranda, M, Carloni, A, Pavone, F, Fabbrizzi, P, Cicchi, S
Format: Article
Language:English
Subjects:
Actuators
Arrays
copper
detection limit
electron transfer
Fluorescence
fluorescence microscopy
ions
Nanocomposites
Nanomaterials
Nanostructure
Quenching
Silver
spectroscopy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work reports on the Cu²⁺ chemosensing behaviour of self-organized micro-array structures of a novel donor–acceptor bichromophoric compound anchored onto Ag nanoisland films. The system exhibits quenching of the fluorescence in the presence of Cu²⁺ ions, with detection range extending from 2×10⁻⁸M up to 3×10⁻⁶M and limit of detection (LOD) of 8×10⁻⁹M. The quenching of fluorescence is accompanied by a quenching of SERS signal from the metal-organic structure, which is consistent with an electron transfer between the copper cation and the organic moiety. The self-organization property of the sensing complexes into micrometric arrays offers great potential for miniaturization and future development of Cu²⁺ detection systems based on real-time observation of fluorescence or SERS quenching by fluorescence microscopy or microRaman spectroscopy.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2010.11.021