Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 16, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/s11051-014-2793-4
Keywords
AuAgS/Ag2S nanoclusters; Hg2+; Photodegradation; Biocompatibility; Sensors
Categories
Funding
- National Natural Science Foundation of China [21375036]
- National Basic Research Program of China (973 Program) [2012CB933600]
- Hunan Provincial Natural Science Foundation of China [14JJ7054]
- Innovation Platform Open Funds for Universities in Hunan Province [13K090]
- Shanghai Science and Technology RD Fund [11JC1413700, 13441902400]
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In this paper, a facile approach for preparation of AuAgS/Ag2S nanoclusters was developed. The unique AuAgS/Ag2S nanoclusters capped with biomolecules exhibit interesting excellent optical and catalytic properties. The fluorescent AuAgS/Ag2S nanoclusters show tunable luminescence depending on the nanocluster size. The apoptosis assay demonstrated that the AuAgS/Ag2S nanoclusters showed low cytotoxicity and good biocompatibility. Therefore, the nanoclusters can be used not only as a probe for labeling cells but also for their photocatalytic activity for photodegradation of organic dye. Moreover, a highly selective and sensitive assay for detection of mercury including Hg2+ and undissociated mercury complexes was developed based on the quenching fluorescent AuAgS/Ag2S nanoclusters, which provides a promising approach for determining various forms of Hg in the mercury-based compounds in environment. These unique nanoclusters may have potential applications in biological labeling, sensing mercury, and photodegradation of various organic pollutants in waste water.
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