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Preparation of Pt Nanoclusters with Different Emission Wavelengths and Their Application in Co 2+ Detection
Author(s) -
Huang Xin,
Aoki Koichi,
Ishitobi Hidekazu,
Inouye Yasushi
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201301115
Subject(s) - nanoclusters , fluorescence , detection limit , ascorbic acid , ligand (biochemistry) , chemistry , photochemistry , materials science , nuclear chemistry , inorganic chemistry , organic chemistry , chromatography , optics , physics , biochemistry , receptor , food science
Differently colored fluorescent Pt nanoclusters (NCs) are easily prepared using polyethyleneimine as the stabilizing ligand and environmentally friendly L‐ascorbic acid as the reducing agent. The quantum yields of the blue‐ (1:5), green‐ (1:20), and yellow‐emitting (1:25) NCs are 4 %, 11 %, and 7 %, respectively. The fluorescent Pt NCs show excellent photostability and are sensitive to Co 2+ ions (with a detection limit of 500 nM).