title: Quantitative analysis of cadmium selenide nanocrystal concentration by comparative techniques.
abstract: 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).
authors.affiliation: Freiburg Materials Research Centre (FMF), Albert-Ludwigs University, Stefan-Meier-Strasse 21, D-79104 Freiburg, Germany.
authors.forename: Erol
authors.initials: E
authors.lastname: Kuçur
authors.forename: Frank M
authors.initials: FM
authors.lastname: Boldt
authors.forename: Sara
authors.initials: S
authors.lastname: Cavaliere-Jaricot
authors.forename: Jan
authors.initials: J
authors.lastname: Ziegler
authors.forename: Thomas
authors.initials: T
authors.lastname: Nann
mesh_terms: D019187:Cadmium Compounds / Q000032:analysis*; D003461:Crystallography; D053758:Nanoparticles; D018036:Selenium Compounds / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D013056:Spectrophotometry, Ultraviolet
chemical_list: D019187:Cadmium Compounds; D018036:Selenium Compounds; C058667:cadmium selenide