naa a22 4500 51081719X CHVBK 20180411083513.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11468-013-9524-z doi (NATIONALLICENCE)springer-10.1007/s11468-013-9524-z Luminescence Enhancement of Carboxyl-Coated CdTe Quantum Dots by Silver Nanoparticles [Elektronische Daten] [L. de Melo, C. Chaves, P. Filho, S. Saska, K. Nigoghossian, A. Gomes, Y. Messaddeq, S. Ribeiro, B. Santos, A. Fontes, R. de Araujo] Metallic nanoparticles (NPs) have been used to improve the sensibility of biosensors and bioassays either by enhancing radiative emission or inducing quenching process on fluorescent probes. The aim of this research was to study the interaction of silver and silver-pectin NPs with water-dispersed carboxyl-coated cadmium telluride (CdTe) quantum dots (QDs). Metallic NPs were observed to change the emission of these fluorophores through local field effects. In a solution-base platform, an increase of 82% was observed for the CdTe emission due to the interaction of QDs and silver-pectin NPs. QDs interaction with silver NPs without pectin was also investigated and a smaller emission enhancement of 20% was detected. We observed that the NPs' nature and QDs' surface charge and concentration are important parameters for NPs-QDs interaction. Moreover, the presence of the pectin polymer shows to be a key component to the observed fluorescence enhancement. Springer Science+Business Media New York, 2013 Silver nanoparticles nationallicence Quantum dots nationallicence Plasmonics nationallicence Fluorescence enhancement nationallicence de Melo L. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut Chaves C. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut Filho P. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut Saska S. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut Nigoghossian K. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut Gomes A. Department of Physics, Federal University of Pernambuco, Av. Professor Luiz Freire, Cidade Universitária, 50670-901, Recife, PE, Brazil aut Messaddeq Y. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut Ribeiro S. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut Santos B. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut Fontes A. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut de Araujo R. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 1147-1153 1557-1955 8:2<1147 2013 8 11468 https://doi.org/10.1007/s11468-013-9524-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-013-9524-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- de Melo L. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Chaves C. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Filho P. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Saska S. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut NATIONALLICENCE 700 1- Nigoghossian K. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut NATIONALLICENCE 700 1- Gomes A. Department of Physics, Federal University of Pernambuco, Av. Professor Luiz Freire, Cidade Universitária, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Messaddeq Y. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut NATIONALLICENCE 700 1- Ribeiro S. Institute of Chemistry, São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970, Araraquara, SP, Brazil aut NATIONALLICENCE 700 1- Santos B. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- Fontes A. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 700 1- de Araujo R. Laboratory of Biomedical Optics and Imaging, Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901, Recife, PE, Brazil aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 1147-1153 1557-1955 8:2<1147 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer