Journal
CHEMICAL COMMUNICATIONS
Volume 50, Issue 36, Pages 4743-4746Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc00829d
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Funding
- SERB [SR/S2/RJN-61/2012, SB/FT/CS-151/2012]
- DST Nanoscience Unit Grant, Govt. of India [SR/NM/NS-42/2009]
- UGC, India
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Exposed surfaces of organic-free colloidal semiconductor nanocrystals act as generic luminescent sensors for multiple analytes. S2- capped CdSe/CdSeS/CdS core/gradient-shell/shell nanocrystals are turn-on sensors for Cd2+ 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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