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Study on the fluorescence resonance energy transfer between CdS quantum dots and Eosin Y
Author(s) -
Yan Zhengyu,
Zhang Zhengwei,
Yu Yan,
Chen Jianqiu
Publication year - 2015
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2706
Subject(s) - förster resonance energy transfer , eosin , acceptor , chemistry , quantum dot , fluorescence , eosin y , aqueous solution , photochemistry , energy transfer , analytical chemistry (journal) , nuclear chemistry , nanotechnology , materials science , staining , chromatography , organic chemistry , optics , catalysis , medicine , physics , pathology , photocatalysis , molecular physics , condensed matter physics
Water‐soluble CdS quantum dots (QDs) were prepared using mercaptoacetic acid (TGA) as the stabilizer in an aqueous system. A fluorescence resonance energy transfer (FRET) system was constructed between water‐soluble CdS QDs (donor) and Eosin Y (acceptor). Several factors that impacted the fluorescence spectra of the FRET system, such as pH (3.05–10.10), concentration of Eosin Y (2–80 mg/L) and concentration of CdS QDs (2–80 mg/L), were investigated and refined. Donor‐to‐acceptor ratios, the energy transfer efficiency ( E ) and the distance ( r ) between CdS QDs and Eosin Y were obtained. The results showed that a FRET system could be established between water‐soluble CdS QDs and Eosin Y at pH 5.0; donor‐to‐acceptor ratios demonstrated a 1: 8 proportion of complexes; the energy transfer efficiency ( E ) and the distance ( r ) between the QDs and Eosin Y were 20.07% and 4.36 nm,respectively. Copyright © 2014 John Wiley & Sons, Ltd.