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Updated: Jun 27, 2026
Characterization of Nanocrystal Size Distribution using Raman Spectroscopy with a Multi-particle Phonon Confinement Model
Published on: August 22, 2015
Application of synchronous fluorescence scan spectroscopy for size dependent simultaneous analysis of CdTe
Digambara Patra1, Tarek H Ghaddar
1Department of Chemistry, Faculty of Arts and Sciences, American University of Beirut, Riad El Solh, Beirut, Lebanon. dp03@aub.edu.lb
Abstract:
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.
