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Microwave‐Assisted Synthesis of Fluorescent Ag Nanoclusters in Aqueous Solution
Author(s) -
Li Rongqing,
Wang Chunlei,
Bo Fan,
Wang Zhuyuan,
Shao Haibao,
Xu Shuhong,
Cui Yiping
Publication year - 2012
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.201101034
Subject(s) - nanoclusters , fluorescence , aqueous solution , transmission electron microscopy , absorption (acoustics) , nanoparticle , materials science , photochemistry , methacrylic acid , adsorption , chemistry , inorganic chemistry , nanotechnology , organic chemistry , polymer , copolymer , physics , quantum mechanics , composite material
Fluorescent Ag nanoclusters are of significant interest because they provide the bridge between atomic and nanoparticle behavior in noble metals. Herein, microwave irradiation was originally used for the synthesis of water‐soluble fluorescent Ag nanoclusters. As‐prepared Ag nanoclusters present red fluorescence emission around 608 nm and a characteristic absorption peak at about 508 nm. Transmission electron microscopy (TEM) shows an average size of 1.6 nm for Ag nanoclusters. The effect of solution pH on the synthesis process and optical properties of Ag nanoclusters was investigated. The pH‐dependent present form and adsorption capacity of poly(methacrylic acid, sodium salt) (PMAA) ligands are believed to be the reason for the pH effect.