期刊
TALANTA
卷 143, 期 -, 页码 469-473出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2015.05.042
关键词
Temperature sensor; Fluorescence; Gelatin; Ag nanoclusters
资金
- National Natural Science Foundation of China (NSFC) [21035005]
A visual physiological temperature sensor was successfully developed with newly hydrothermally prepared fluorescent silver nanoclusters (AgNCs) at room temperature using gelatin as the protective and reducing agent. The as-prepared gelatin-stabilized AgNCs was water-soluble, uniform and exhibited a narrow distribution with an average size of 1.16 nm, showing a maximum emission band at 552 nm (2.45 eV) when excited at 445 nm (2.79 eV). The large Stokes shift of 110 rim of the gelatin-stabilized AgNCs makes it actually applicable with very low background and light scattering interferences. It was found that the as-prepared gelatin-stabilized AgNCs is temperature-sensitive over the range from 5 degrees C to 45 degrees C, and thus a visual physiological temperature sensor could be developed with the gelatin-AgNCs as under the irradiation of visible light. (C) 2015 Elsevier B.V. All rights reserved.
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