Quantitative analysis of cadmium selenide nanocrystal concentration by comparative techniques.
In this paper, we compared atomic absorption spectroscopy (AAS), anodic stripping voltammetry (ASV), and UV-vis spectroscopy for the determination of the concentration of CdSe nanocrystal (NC) solutions. The experimental results were combined with crystallographic calculations of the NC size, which led to a very accurate determination of the nanocrystal concentration--a crucial parameter for bioanalytical applications. Furthermore, such a combined approach can be extended to the determination of shell thickness of core/shell materials (e.g., CdSe/ZnS).
Kuçur
Erol
E
Freiburg Materials Research Centre (FMF), Albert-Ludwigs University, Stefan-Meier-Strasse 21, D-79104 Freiburg, Germany.
Boldt
Frank M
FM
Cavaliere-Jaricot
Sara
S
Ziegler
Jan
J
Nann
Thomas
T
D019187:Cadmium Compounds / Q000032:analysis*; D003461:Crystallography; D053758:Nanoparticles; D018036:Selenium Compounds / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D013056:Spectrophotometry, Ultraviolet
D019187:Cadmium Compounds; D018036:Selenium Compounds; C058667:cadmium selenide