Home
Resources
Publications
Gold Nanoparticles Functionalized by Rhodamine B Isothiocyanate: A New Tool to Control Plasmonic Effects

Gold Nanoparticles Functionalized by Rhodamine B Isothiocyanate: A New Tool to Control Plasmonic Effects

Ilaria Fratoddi, Antonella Cartoni, Iole Venditti, Daniele Catone, Patrick O'Keeffe, Alessandra Paladini, Francesco Toschi, Stefano Turchini, Fabio Sciubba, Giovanna Testa, Chiara Battocchio, Laura Carlini, etc.

J Colloid Interface Sci. 2018 Mar 1;513:10-19.

PMID: 29128618

Abstract:

Gold nanoparticles with an average diameter of 10 nm, functionalized by the dye molecule rhodamine B isothiocyanate, have been synthesized. The resulting material has been extensively characterized both chemically, to investigate the bonding between the dye molecules and the nanoparticles, and physically, to understand the details of the aggregation induced by interaction between dye molecules on different nanoparticles. The plasmonic response of the system has been further characterized by measurement and theoretical simulation of the static UV-Vis extinction spectra of the aggregates produced following different synthesis procedures. The model parameters used in the simulation gave further useful information on the aggregation and its relationship to the plasmonic response. Finally, we investigated the time dependence of the plasmonic effects of the nanoparticles and fluorescence of the dye molecule using an ultrafast pump-probe optical method. By modulating the quantity of dye molecules on the surface of the nanoparticles it was possible to exert fine control over the plasmonic response of nanoparticles.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP36877697	Rhodamine B isothiocyanate		36877-69-7	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: