title: Preparation of Pt nanoclusters with different emission wavelengths and their application in Co2+ detection.
abstract: 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).
authors: Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamada-oka, Suita, Osaka 565-0871 (Japan).
authors: Xin
authors: X
authors: Huang
authors: Koichi
authors: K
authors: Aoki
authors: Hidekazu
authors: H
authors: Ishitobi
authors: Yasushi
authors: Y
authors: Inouye
mesh_terms: D003035:Cobalt / Q000032:analysis*; D005453:Fluorescence; D008163:Luminescent Measurements; D053768:Metal Nanoparticles / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*
chemical_list: D003035:Cobalt; D010984:Platinum
keywords: fluorescence; nanoclusters; photostability; platinum; sensors