无有机配体的胶体半导体纳米晶体作为金属离子和硝基芳香族炸药的发光传感器。
Organic-free colloidal semiconductor nanocrystals as luminescent sensors for metal ions and nitroaromatic explosives.
作者信息
Swarnkar Abhishek, Shanker G Shiva, Nag Angshuman
机构信息
Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, India - 411008.
出版信息
Chem Commun (Camb). 2014 May 11;50(36):4743-6. doi: 10.1039/c4cc00829d.
Exposed surfaces of organic-free colloidal semiconductor nanocrystals act as generic luminescent sensors for multiple analytes. S(2-) capped CdSe/CdSeS/CdS core/gradient-shell/shell nanocrystals are turn-on sensors for Cd(2+) ions (110 pM) in an aqueous medium with physiological pH 7.4. A similar organic-free semiconductor nanocrystal shows luminescence turn-off sensing for 2,4,6-trinitrophenol, a known explosive.
无有机配体的胶体半导体纳米晶体的暴露表面可作为多种分析物的通用发光传感器。以S(2-)为帽的CdSe/CdSeS/CdS核/梯度壳/壳纳米晶体是生理pH值为7.4的水性介质中Cd(2+)离子（110 pM）的开启型传感器。一种类似的无有机配体半导体纳米晶体对已知爆炸物2,4,6-三硝基苯酚表现出发光猝灭传感。
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