Carbazole peripheral poly(benzyl ether) dendrimers at the air-water interface: Electrochemical cross-linking and electronanopatterning

Jin Young Park, Ramakrishna Ponnapati, Prasad Taranekar, Rigoberto C. Advincula

研究成果: Article査読

24 被引用数 (Scopus)

抄録

A Langmuir film of a third-generation carbazole-terminated poly(benzyl ether) (G3-CtPBE) dendrimer was investigated at the air-water interface. Langmuir-Blodgett (LB) films were deposited on gold substrates and investigated by atomic force microscopy (AFM), followed by electrochemical and electronanopatterning studies. For the G3-CtPBE dendrimer aggregates, variable concentration and surface pressure gave control over aggregate size and shape at the air-water interface. At a lower concentration C1, aggregate-spherical nanoparticles were observed with a face-on or overlapped orientation with increasing surface pressure. However, at a higher concentration C2, their surface morphologies exhibited circular and rod-shaped aggregates with respect to increasing surface pressure attributed to an edge-on configurational change. Moreover, in situ simultaneous interfacial potentiostatic electrodeposition with LB transfer at the air-water interface was employed for the first time with the G3-CtPBE dendrimers onto a hydrophilic surface under constant voltage (i.e., close to the oxidation potential of G3-CtPBE for electrochemical cross-linking). Electrochemical cross-linking on G3-CtPBE dendrimer LB films was also performed ex situ to investigate electrochemical and optical properties. Finally, as an application of a cross-linkable LB film, electronanolithography was carried out to prepare nanopatterns using the current sensing atomic force microscopy (CS-AFM) technique.

本文言語English
ページ(範囲)6167-6176
ページ数10
ジャーナルLangmuir
26
9
DOI
出版ステータスPublished - 2010 5月 4
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

フィンガープリント

「Carbazole peripheral poly(benzyl ether) dendrimers at the air-water interface: Electrochemical cross-linking and electronanopatterning」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