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

Abhishek Swarnkar; G. Shiva Shanker; Angshuman Nag

doi:10.1039/c4cc00829d

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

Abhishek Swarnkar
, G. Shiva Shanker
, Angshuman Nag

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	4743-4746
Number of pages	4
Journal	Chemical Communications
Volume	50
Issue number	36
DOIs	https://doi.org/10.1039/c4cc00829d
State	Published - 8 Apr 2014
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
General Chemistry
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1039/c4cc00829d

Cite this

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abstract = "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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Y1 - 2014/4/8

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84898473783

U2 - 10.1039/c4cc00829d

DO - 10.1039/c4cc00829d

M3 - Article

C2 - 24682020

AN - SCOPUS:84898473783

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JO - Chemical Communications

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ER -

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

Abstract

ASJC Scopus subject areas

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