期刊
NANO RESEARCH
卷 3, 期 10, 页码 738-747出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-010-0040-6
关键词
Au microplates; synthesis; cell substrate; metal enhanced fluorescence; manipulation
类别
资金
- Department of Science and Technology, India
- Council of Scientific and Industrial Research, India
Hexagonal and triangular Au microplates extending over an area of similar to 12,000 mu m(2) with thickness in the range 30-1000 nm have been synthesized using a single step thermolysis of (AuCl4)(-)-tetraoctylammonium bromide complex in air. The microplates are self-supporting and can be easily manipulated using a sharp pin, a property which enables them to serve as substrates for living cells. The microplate surface is non-toxic to living cells and can enhance the fluorescence signal from fluorophores residing within the cell by an order of magnitude. In addition, the microplates are smooth and single-crystalline, and ideal as microscopy substrates and molecular electrodes. The growth of the microplates in the initial stages is interesting in that they seem to grow perpendicular to the substrate, as evidenced by in situ microscopy.
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