A Novel and Universal Route to SiO2-Supported Organic/Inorganic Hybrid Noble Metal Nanomaterials via Surface RAFT Polymerization

被引：56

作者：

Liu, Jiliang ^{[1
]}

Zhang, Lifen ^{[1
]}

Shi, Suping ^{[1
]}

Chen, Shuai ^{[1
]}

Zhou, Nianchen ^{[1
]}

Zhang, Zhengbiao ^{[1
]}

Cheng, Zhenping ^{[1
]}

Zhu, Xiulin ^{[1
]}

机构：

[1] Soochow Univ, Key Lab Organ Synth Jiangsu Prov, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

来源：

LANGMUIR | 2010年 / 26卷 / 18期

关键词：

FRAGMENTATION CHAIN-TRANSFER; LIVING RADICAL POLYMERIZATION; SILICA PARTICLES; CLICK CHEMISTRY; ENHANCED RAMAN; NANOPARTICLES; SILVER; GOLD; BRUSHES; NANOSPHERES;

D O I：

10.1021/la102994g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polymer-encapsulated gold or silver nanoparticles were synthesized and sterically stabilized by a shell layer of poly(4-vinylpyridine) (P4VP) grafted on SiO2 nanoparticles that acts as a scaffold for the synthesis of hybrid noble metal nanomaterials The grafting P4VP shell was synthesized via surface reversible addition-fragmentation chain transfer (RAFT) polymerization of 4-vinylpyridine (4VP) using SiO2-supported benzyl 9H-carbazole-9-carbodithioate (SiO2-BCBD) as the RAFT agent The covalently tethered P4VP shell can coordinate with various transition metal ions such as Au3+ or Ag+ and therefore stabilize the corresponding Au or Ag nanoparticles reduced in situ by sodium borohydride (NaBH4) or trisodium citrate The SiO2-supported RAFT agent and the Au or Ag nanoparticles embedded in the P4VP shell layer were characterized by UV-vis spectrophotometer, X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and surface-enhanced Raman spectroscopy (SERS)

引用

页码：14806 / 14813

页数：8

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