Surface-grafted polymers from electropolymerized polythiophene RAFT agent

Carlos D. Grande, Maria Celeste Tria, Guoqian Jiang, Ramakrishna Ponnapati, Rigoberto Advincula

研究成果: Article査読

49 被引用数 (Scopus)

抄録

The synthesis of grafted homopolymer and block copolymer films is reported using a surface-initiated reversible addition-fragmentation chain transfer (SI-RAFT) polymerization from electropolymerized polythiophene on indium tin oxide (ITO) and Au electrode surfaces. The polythiophene macro-RAFT agent was electrodeposited by cyclic voltammetry (CV) from thiobenzoate-functionalized terthiophene monomers. The ultrathin films on Au surfaces were investigated using atomic force microscopy (AFM), static contact angle, X-ray photoelectron spectroscopy (XPS), and ellipsometry. On the other hand, the RAFT agent-modified ITO substrate was monitored by UV-vis to track the electropolymerization of the RAFT agent and formation of π-conjugated polymer. Molecular weight (MW) and polydispersity index (PDI) were determined from sacrificial polymerization in solution. AFM imaging revealed typical polymer layer morphology for the films. Investigation of film thicknesses by ellipsometry and AFM profilometry gave comparable results. XPS showed atomic percentages close to expected values, accounting for variations based on component thickness and XPS sensitivity. Diblock copolymer brush formation revealed capabilities of a conventional SI-RAFT procedure using a polythiophene macroinitiator film.

本文言語English
ページ(範囲)966-975
ページ数10
ジャーナルMacromolecules
44
4
DOI
出版ステータスPublished - 2011 2 22
外部発表はい

ASJC Scopus subject areas

  • 有機化学
  • 材料化学
  • ポリマーおよびプラスチック
  • 無機化学

フィンガープリント

「Surface-grafted polymers from electropolymerized polythiophene RAFT agent」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル