Conducting polymer-gold co-patterned surfaces via nanosphere lithography

Brylee David B Tiu, Roderick B. Pernites, Edward L. Foster, Rigoberto C. Advincula*

*この研究の対応する著者

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Hypothesis: Co-patterned arrays comprised of conjugated polymers and nanostructured gold is an important matrix for sensing and stimuli-responsive plasmonic applications. Nanosphere lithography (NSL) is an easy-to-use patterning technique and viable method to fabricate inverse honeycomb structures with electrochemically deposited conjugated polymers. The cross-sectional height of the conducting polymer pattern can be tuned such that the macropores of the honeycomb structure expose electrochemically accessible areas for further gold deposition. Using time-dependent electrochemical reduction, Au3+ is reduced to Au0 and selectively deposit on the macropores thus forming a co-patterned surface. Experiments: The Langmuir-Blodgett-like deposition was used to assemble polystyrene spheres on a conductive substrate. Then the carbazole-based monomer was electropolymerized within the interstices of the colloidal template, which was subsequently dissolved. A potentiostatic technique was used to deposit Au in the macropores. Findings: Fabrication of the polycarbazole-Au co-patterned surface was characterized by atomic force microscopy (AFM), electrochemical quartz crystal microbalance (EC-QCM), and X-ray photoelectron spectroscopy (XPS). Surface plasmon resonance spectroscopy (SPS) data supported backfilling behavior and quantified the complex refractive index of the array. UV-Vis absorption spectroscopy shows overlapping polycarbazole and gold LSPR peaks useful for plasmonic sensing applications. The colloidal templating approach reported in this study was further used in the fabrication of highly ordered Au nanodisks.

本文言語English
ページ(範囲)86-96
ページ数11
ジャーナルJournal of Colloid and Interface Science
459
DOI
出版ステータスPublished - 2015 12月 1
外部発表はい

ASJC Scopus subject areas

  • 表面、皮膜および薄膜
  • 電子材料、光学材料、および磁性材料
  • 生体材料
  • コロイド化学および表面化学

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