Naslov
Surface-Enhanced Raman Scattering Study of the Silver Nanoparticle-Hydrogel Composite

Autori
Miljanić, Snežana ; Frkanec, Leo ; Meić, Zlatko ; Žinić, Mladen

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstract Book. 1st European Chemistry Congress / Horvai, Gyorgy ; Bombicz, Petra ; Androsits, Beata - Budimpešta, 2006

Skup
1st European Chemistry Congress

Mjesto i datum
Budimpešta, Mađarska, 27.08.2006. - 31.08.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
hidrogel; koloid srebra; površinski aktivirano Ramanovo raspršenje
(hydrogel; silver colloid; surface-enhanced Raman scattering)

Sažetak
To obtain detailed information on the molecular self-assembly process of small organic molecules in various solvents numerous spectroscopic methods have been applied [1]. Due to limitations in use of these techniques caused by low gelator concentration and water as a gelling medium an innovative approach employing surface-enhanced Raman scattering (SERS) has been demonstrated. Bis-(S)-phenylalanine oxalyl amide acts as an efficient low molecular weight organic gelator of water having ability to form a thermoreversible and stable gel with a silver colloidal solution too. While a FT Raman spectrum of the gelling substance in hydrogel was not obtained, intense bands in the SER spectrum indicated the gelator molecules attached to the silver colloidal particles within the gel structure. Based on concentration and temperature dependent SER spectra adsorption mechanism of the gelling aminoacid oxalyl amide onto particle surface as well as dominant intermolecular interactions involved in nanocomposite hydrogel formation will be discussed. [1] Estroff L. A., Hamilton A. D.: Chem. Rev. 104, 1201-1217, 2004.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA