Organic-free colloidal semiconductor nanocrystals as luminescent sensors for metal ions and nitroaromatic explosives.

نویسندگان

  • Abhishek Swarnkar
  • G Shiva Shanker
  • Angshuman Nag
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