Surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization from fine particles functionalized with trithiocarbonates

Ohno, Kohji, Ma, Ying, Huang, Yun, Mori, Chizuru, Yahata, Yoshikazu, Tsujii, Yoshinobu, Maschmeyer, Thomas, Moraes, John and Perrier, Sebastien (2011) Surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization from fine particles functionalized with trithiocarbonates. Macromolecules, 44 22: 8944-8953. doi:10.1021/ma202105y


Author Ohno, Kohji
Ma, Ying
Huang, Yun
Mori, Chizuru
Yahata, Yoshikazu
Tsujii, Yoshinobu
Maschmeyer, Thomas
Moraes, John
Perrier, Sebastien
Title Surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization from fine particles functionalized with trithiocarbonates
Journal name Macromolecules   Check publisher's open access policy
ISSN 0024-9297
1520-5835
Publication date 2011-11-22
Year available 2011
Sub-type Article (original research)
DOI 10.1021/ma202105y
Open Access Status Not yet assessed
Volume 44
Issue 22
Start page 8944
End page 8953
Total pages 10
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
Monodisperse silica particles (SiPs) were surface-modified with a newly designed reversible addition-fragmentation chain transfer (RAFT) agent having a triethoxysilane moiety, 6-(triethoxysilyl) 2-(((methylthio)carbonothioyl)thio)- 2-phenylacetate (EHT). Surface-initiated RAFT polymerization of styrene was carried out with the EHT-modified SiPs in the presence of a free RAFT agent. The polymerization proceeded in a living manner, producing SiPs coated with well-defined polystyrene of a target molecular weight with a graft density as high as 0.3 chains/nm2. Similarly, polymerizations of methyl methacrylate (MMA), N-isopropylacrylamide, and n-butyl acrylate were conducted, providing SiPs grafted with concentrated (high-density) polymer brushes. In all examined cases, the hybrid particles were highly dispersible in solvents for graft polymers, without causing any aggregations. Owing to exceptionally high uniformity and perfect dispersibility, these hybrid particles formed two- and three-dimensionally ordered arrays at the air-water interface and in suspension, respectively. In addition to the surface-grafting on SiPs, the versatility of this technique was demonstrated by carrying out surface-initiated RAFT polymerization of styrene from iron oxide nanoparticles modified with EHT.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemistry and Molecular Biosciences
 
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