Journal
BIOSENSORS & BIOELECTRONICS
Volume 52, Issue -, Pages 271-276Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2013.08.011
Keywords
Nanohybrids; Room-Temperature Phosphorescence (RTP); Sensor; Rutin
Categories
Funding
- National Natural Science Foundation of China [20935001]
- Fund for Construction Program of Chemical Advantage and Key discipline of Shanxi Province of China [912019]
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Quantum dots (QDs) nanohybrids are an effective route to obtain new property of materials, and are very significant for developing specific materials and improving the performance of existing QDs materials. The objectives of this work are to prepare MPA-capped Mn-doped ZnS QDs/CTAB nanohybrids (MPA: 3-mercaptopropionic acid; CTAB: cetyltrimethyl ammonium bromide) through electrostatic self-assembly, to investigate the formation mechanism and the Room-Temperature Phosphorescenee (RTP) changes, and to explore the possibility of their application in detection of rutin. As a result, MPA-capped Mn-doped ZnS QDs/CTAB nanohybrids greatly improve the rutin detection ability of QDs and provide an important method for developing more convenient and effective rutin detection sensor. The sensor for rutin gave a detection limit of 0.037 mg L-1 and two linear ranges from 0.05 to 0.5 mg L-1 and from 0.5 to 5 mg L-1, and thus can be expanded to selective detection of other substances. Since the present QDs-based RTP method does not need deoxidants or other inducers as conventional RTP detection methods, and avoids interference from autofluorescence and the scattering light of the matrix that are encountered in spectrofluorometry, this method can be used to detect the content of rutin in body fluid. (C) 2013 Published by Elsevier B.V.
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