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Sensing during In Situ Growth of Mn‐Doped ZnS QDs: A Phosphorescent Sensor for Detection of H 2 S in Biological Samples
Author(s) -
Wu Peng,
Zhang Jinyi,
Wang Shanlin,
Zhu Airu,
Hou Xiandeng
Publication year - 2014
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201303753
Subject(s) - phosphorescence , dopant , fluorescence , quantum dot , doping , aqueous solution , biological imaging , nanotechnology , in situ , materials science , zinc sulfide , photochemistry , sulfide , chemistry , inorganic chemistry , optoelectronics , optics , organic chemistry , physics , zinc , metallurgy
Monitoring the in situ growth of Mn‐doped ZnS quantum dots is shown to be a route to selectively detect H 2 S, an important endogenously produced signalling molecule. The use of Mn 2+ as a dopant resulted in orange phosphorescence, making it possible to avoid the background fluorescence from biological surroundings that can occur at other wavelengths. The choice of ZnS QDs as the host material ensured selectivity, since only sulfide can precipitate Zn 2+ and Mn 2+ from aqueous solution.