Grafting polymer nanoshell onto the exterior surface of mesoporous silica nanoparticles via surface reversible addition-fragmentation chain transfer polymerization

被引:79
作者
Hong, Chun-Yan [1 ]
Li, Xin [1 ]
Pan, Cai-Yuan [1 ]
机构
[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, Anhua 230026, Peoples R China
基金
中国国家自然科学基金;
关键词
reversible addition-fragmentation chain transfer (RAFT) polymerization; mesoporous silica nanoparticle (MSN); core-shell nanostructure; polystyrene;
D O I
10.1016/j.eurpolymj.2007.07.021
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Reversible addition-fragmentation chain transfer (RAFT) functionalities were anchored to the exterior surface of mesoporous silica nanoparticles (MSNs) without changing the mesoporous structure, RAFT polymerization of styrene was subsequently conducted to graft polystyrene (PSt) onto the exterior surface of MSNs, forming a novel core-shell nanostructure with a mesoporous core and a polymer nanoshell. Fourier transform infrared spectroscopy (FT-IR), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA) were used to characterize the produced mesoporous core-shell nanostructure, the results showed that the thickness of the nanoshell increased with the increasing time of polymerization. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4114 / 4122
页数:9
相关论文
共 45 条
[11]  
Jeyaprakash JD, 2002, MACROMOL RAPID COMM, V23, P277, DOI 10.1002/1521-3927(20020301)23:4<277::AID-MARC277>3.0.CO
[12]  
2-U
[13]   Surface initiated living cationic polymerization of 2-oxazolines [J].
Jordan, R ;
Ulman, A .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (02) :243-247
[14]   Quantitative determination of the chemical composition of silica-poly(norbornene) nanocomposites [J].
Jordi, MA ;
Seery, TAP .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (12) :4416-4422
[15]   Formation of covalently attached polymer overlayers on Si(111) surfaces using ring-opening metathesis polymerization methods [J].
Juang, A ;
Scherman, OA ;
Grubbs, RH ;
Lewis, NS .
LANGMUIR, 2001, 17 (05) :1321-1323
[16]   Controlled functionalization of multiwalled carbon nanotubes by in situ atom transfer radical polymerization [J].
Kong, H ;
Gao, C ;
Yan, DY .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (02) :412-413
[17]   A mesoporous silica nanosphere-based carrier system with chemically removable CdS nanoparticle caps for stimuli-responsive controlled release of neurotransmitters and drug molecules [J].
Lai, CY ;
Trewyn, BG ;
Jeftinija, DM ;
Jeftinija, K ;
Xu, S ;
Jeftinija, S ;
Lin, VSY .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (15) :4451-4459
[18]   Functional polymers from novel carboxyl-terminated trithiocarbonates as highly efficient RAFT agents [J].
Lai, JT ;
Filla, D ;
Shea, R .
MACROMOLECULES, 2002, 35 (18) :6754-6756
[19]   A versatile method to prepare RAFT agent anchored substrates and the preparation of PMMA grafted nanoparticles [J].
Li, C ;
Han, J ;
Ryu, CY ;
Benicewicz, BC .
MACROMOLECULES, 2006, 39 (09) :3175-3183
[20]   Synthesis of well-defined polymer brushes grafted onto silica nanoparticles via surface reversible addition-fragmentation chain transfer polymerization [J].
Li, CZ ;
Benicewicz, BC .
MACROMOLECULES, 2005, 38 (14) :5929-5936