Application of synchronous fluorescence scan spectroscopy for size dependent simultaneous analysis of CdTe nanocrystals and their mixtures.
In this paper, synchronous fluorescence scan (SFS) spectroscopy has been applied for the first time for the simultaneous determination of a mixture of CdTe fluorescent nanocrystals (NCs) of various sizes without a pre-separation step. It is observed that synchronous fluorescence maximum correlates well with the size of the nanocrystals, i.e.; the lambda(SFS)(max) is useful to determine size dependency of NCs. Synchronous fluorescence maximum along with the second derivative can identify individual NCs in a mixture in water. The method is found to be simple, sensitive, selective and fast for NCs determination in aqueous media.
Patra
Digambara
D
Department of Chemistry, Faculty of Arts and Sciences, American University of Beirut, Riad El Solh, Beirut, Lebanon. dp03@aub.edu.lb
Ghaddar
Tarek H
TH
D019187:Cadmium Compounds / Q000032:analysis* / Q000737:chemistry; D002623:Chemistry Techniques, Analytical / Q000379:methods; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods*; D013691:Tellurium / Q000032:analysis* / Q000737:chemistry; D013997:Time Factors
D019187:Cadmium Compounds; D013691:Tellurium; C028337:cadmium telluride