Home
Resources
Publications
Synergistic Electrocatalytic Effect of Nanostructured Mixed Films Formed by Functionalised Gold Nanoparticles and Bisphthalocyanines

Synergistic Electrocatalytic Effect of Nanostructured Mixed Films Formed by Functionalised Gold Nanoparticles and Bisphthalocyanines

C Medina-Plaza, L N Furini, C J L Constantino, J A de Saja, M L Rodri Guez-Mendez

Anal Chim Acta. 2014 Dec 3;851:95-102.

PMID: 25440670

Abstract:

A synergistic electrocatalytic effect was observed in sensors where two electrocatalytic materials (functionalized gold nanoparticles and lutetium bisphthalocyanine) were co-deposited using the Langmuir-Blodgett technique. Films were prepared using a novel method where water soluble functionalised gold nanoparticles [(11-mercaptoundecyl)tetra(ethylene glycol)] (SAuNPs) were inserted in floating films of lutetium bisphthalocyanine (LuPc2) and dimethyldioctadecylammonium bromide (DODAB) as the amphiphilic matrix. The formation of stable and homogeneous mixed films was confirmed by π-A isotherms, BAM, UV-vis and Raman spectroscopy, as well as by SEM and TEM microscopy. The synergistic effect towards hydroquinone of the electrodes modified with LuPc2:DODAB/SAuNP was characterised by an increase in the intensity of the redox peaks and a reduction of the overpotential. This synergistic electrocatalytic effect arose from the interaction between the SAuNPs and the phthalocyanines that occur in the Langmuir-Blodgett films and from the high surface area provided by the nanostructured films. The sensitivity increased with the amount of LuPc2 and SAuNPs inserted in the films and limits of detection in the range of 10(-7)molL(-1) were attained.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS73270	(11-Mercaptoundecyl)tetra(ethylene glycol) functionalized gold nanoparticles			Price
LS777213	(11-Mercaptoundecyl)tetra(ethylene glycol)			Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: