Constructing amphiphilic polymer brushes on the convex surfaces of multi-walled carbon nanotubes by in situ atom transfer radical polymerization

2004 ◽  
Vol 14 (9) ◽  
pp. 1401 ◽  
Author(s):  
Hao Kong ◽  
Chao Gao ◽  
Deyue Yan
Keyword(s):  
Carbon Nanotubes ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Polymer Brushes ◽  
Amphiphilic Polymer ◽  
Atom Transfer ◽  
Convex Surfaces ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Well-Defined Amphiphilic Polymer-Si(100) Hybrids via Surface-Initiated Atom Transfer Radical Polymerization

2013 ◽  
Vol 669 ◽  
pp. 239-245 ◽  
Author(s):  
Jin Wen Peng ◽  
Riu Hua Mo ◽  
Zhen Fan Liu ◽  
Yuan Wei Zhong ◽  
Qin Jie ◽  
...  
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Photoelectron Spectroscopy ◽  
Polymer Brushes ◽  
Amphiphilic Polymer ◽  
Atom Transfer ◽  
Poly Ethylene Glycol ◽  
X Ray ◽  
Atomic Force ◽  
Poly Ethylene

Well-defined amphiphilic graft polymer brushes containing fluoropolymer segments have been successfully prepared by (i) UV-induced coupling of 4-vinylbenzyl chloride (VBC) with the hydrogen-termined Si(100) (Si-VBC surface), (ii) surface-initiated atom transfer radical polymerization (ATRP) of 2-hydroxyethl methacrylate (HEMA) to produce the Si–VBC–g–P(HEMA) surface as the backbone of macroinitiator for further ATRPs, (iii) coupling of 2-bromoisobutyrl bromide with the HEMA polymer(P(HEMA)) by the esterification to produce the macroinitiators for the subsequent ATRP(Si–VBC–g–P(HEMA)-R3Br), (iv) surface-initiated ATRP of 2,2,3,3,4,4,4-heptafluorobutyl acrylate (HFBA) to produce the Si–VBC–g–P(HEMA)–g–P(HFBA) surface, and (v) the active P(HFBA) chain ends being used as the initiator for the subsequent ATRP of poly(ethylene glycol) monomethacrylate (PEGMA) to produce the amphiphilic Si–VBC–g–P(HEMA)–g–P(HFBA)–b–P(PEGMA) brush surface. The chemical composition and functionality of the silicon surface were characterised by X-ray photoelectron spectroscopy (XPS), atomic force microscope (AFM) and ellipsometry.

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