pH-detachable polymer brushes formed using titanium−diol coordination chemistry and living radical polymerization (RAFT)

Liu, Jingquan, Yang, Wenrong, Zareie, Hadi M., Gooding, J. Justin and Davis, Thomas P. 2009, pH-detachable polymer brushes formed using titanium−diol coordination chemistry and living radical polymerization (RAFT), Macromolecules, vol. 42, no. 8, pp. 2931-2939, doi: 10.1021/ma802256g.

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Title pH-detachable polymer brushes formed using titanium−diol coordination chemistry and living radical polymerization (RAFT)
Author(s) Liu, Jingquan
Yang, WenrongORCID iD for Yang, Wenrong orcid.org/0000-0001-8815-1951
Zareie, Hadi M.
Gooding, J. Justin
Davis, Thomas P.
Journal name Macromolecules
Volume number 42
Issue number 8
Start page 2931
End page 2939
Total pages 9
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2009-04-28
ISSN 0024-9297
1520-5835
Summary pH-detachable poly(styrene) brushes formed on indium−tin oxide (ITO) glass substrates using metal complex chemistry and reversible addition−fragmentation chain transfer (RAFT) polymerization was described. These pH-detachable polymeric brushes were generated using both “graft-from” and “graft-to” methodologies. The methodologies involved either the surface self-assembly of catechol-functional RAFT agents (graft-from) or catechol-terminal polymer chains (graft-to) onto the ITO substrate via titanium−diol coordination. The stepwise functionalization of the ITO glass surfaces was characterized successfully using X-ray photoelectron spectroscopy (XPS) and contact angle measurement. Poly(styrene) brushes generated using the “graft-from” method were denser than those generated using the “graft-to” method, as exemplified by atom force microscopy (AFM) and quantified using cyclic voltammetry. Poly(styrene) brushes assembled using both methods could be detached easily by manipulating the pH of the brush environment. Cyclic voltammetry was utilized to calculate precisely the surface coverage of the RAFT functionality and polymeric brush density.
Language eng
DOI 10.1021/ma802256g
Field of Research 100703 Nanobiotechnology
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30035059

Document type: Journal Article
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