Novel highly charged silica-coated Tb(III) nanoparticles with fluorescent properties sensitive to ion exchange and energy transfer processes in aqueous dispersions

Novel silica-coated Tb(III) nanoparticles with high luminecsence were synthesized using the reverse microemulsion procedure. The quenching of luminescent properties of these nanoparticles can be achieved by ion exchange and energy transfer mechanisms. The quenching through the ion exchange of Tb(III...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:	Langmuir : the ACS journal of surfaces and colloids. - 1991. - 25(2009), 5 vom: 03. März, Seite 3146-51
1. Verfasser:	Mustafina, Asiya R (VerfasserIn)
Weitere Verfasser:	Fedorenko, Svetlana V, Konovalova, Olga D, Menshikova, Anastasiya Yu, Shevchenko, Nataliya N, Soloveva, Svetlana E, Konovalov, Alexander I, Antiping, Igor S
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2009
Zugriff auf das übergeordnete Werk:	Langmuir : the ACS journal of surfaces and colloids
Schlagworte:	Journal Article

Beschreibung
Zusammenfassung:	Novel silica-coated Tb(III) nanoparticles with high luminecsence were synthesized using the reverse microemulsion procedure. The quenching of luminescent properties of these nanoparticles can be achieved by ion exchange and energy transfer mechanisms. The quenching through the ion exchange of Tb(III) by H+ or La(III) is time dependent, indicating that the ion exchange is probably diffusion controlled. The quenching by Co(III) complex cations is achieved by the energy transfer mechanism and thus is not time dependent. The analysis of quenching data in Stern-Volmer cooordinates reveal the negative charge of the silica-coated Tb(III)-TCAS nanoparticles and several types of luminophoric species, located within the core and close to the surface of silica nanoparticles
Beschreibung:	Date Completed 01.07.2009 Date Revised 13.05.2009 published: Print Citation Status PubMed-not-MEDLINE
ISSN:	1520-5827
DOI:	10.1021/la8032572