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Type: Artigo de periódico
Title: Fluorescent II-VI semiconductor quantum dots in living cells: Nonlinear microspectroscopy in an optical tweezers system
Author: Farias, PMA
Santos, BS
de Thomaz, AA
Ferreira, R
Menezes, FD
Cesar, CL
Fontes, A
Abstract: In this work we used a setup consisting of an optical tweezers combined with a nonlinear microspectroscopy system to perform scanning microscopy and obtain emission spectra using two photon excited (TPE) luminescence of captured single living cells labeled with core-shell fluorescent semiconductor quantum dots (QDs). The QDs were obtained via colloidal synthesis in aqueous medium with an adequate physiological resulting pH. Sodium polyphosphate was used as the stabilizing agent. The results obtained show the potential presented by this system as well as by these II-VI fluorescent semiconductor quantum dots to perform spectroscopy in living trapped cells in any neighborhood and dynamically observe the cell chemical reactions in real time.
Country: EUA
Editor: Amer Chemical Soc
Citation: Journal Of Physical Chemistry B. Amer Chemical Soc, v. 112, n. 9, n. 2734, n. 2737, 2008.
Rights: fechado
Identifier DOI: 10.1021/jp0758465
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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