Organic-free colloidal semiconductor nanocrystals as luminescent sensors for metal ions and nitroaromatic explosives.
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Chemical communications
دوره 50 36 شماره
صفحات -
تاریخ انتشار 2014