Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 263, Issue -, Pages 508-516Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.02.163
Keywords
Room-temperature synthesis; Yellow-emitting silicon nanoparticles; Crystal violet; Fish tissues; Fluorescence
Funding
- National Natural Science Foundation of China [21675068]
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Silicon nanoparticles (SiNPs) have attracted increasing attentions due to their unique properties and related applications. However, previously reported SiNPs generally showed emission band only in the blue-or green-light regions, which limited their applications in biochemical samples. So far, synthesis of longer wavelength emissive SiNPs remains a challenge. In this paper, the yellow-emitting fluorescent SiNPs were prepared via a facile room temperature procedure, which avoided heating and pressurizing operation, multistep and time-consuming post-modified procedures. The obtained SiNPs displayed excellent water-solubility, pH-stability, salt-tolerance, and photo-stability. Significantly, the fluorescence of SiNPs could be remarkably quenched by crystal violet (CV) via synergistic effect of inner filter effect (IFE) and fluorescence resonance energy transfer (FRET). Based on this phenomenon, a method for the determination of CV was established. Under the optimum conditions, the method showed a wide linearity range from 0.075 to 15.0 mu g/mL with a limit of detection of 25 ng/mL. Furthermore, the method was successfully applied to the analysis of CV in fish tissues samples. (C) 2018 Elsevier B.V. All rights reserved.
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