Controlling volume shrinkage in soft lithography through heat-induced cross-linking of patterned nanofibers

Yasunao Miyamura, Chiyoung Park, Kazushi Kinbara, Frank A. Leibfarth, Craig J. Hawker, Takuzo Aida

研究成果: Article査読

37 被引用数 (Scopus)

抄録

When poly(isopropylidene diallylmalonate) rich in threo-disyndiotactic sequences (strich-2) was utilized as a cross-linkable ink for microcontact printing, the resultant submicrometer-scale patterns featuring 700 and 300 nm wide stripes were successfully insolubilized while maintaining their high dimensional integrity by heat-induced cross-linking with elimination of CO2 and acetone. In sharp contrast, although the thermal properties and reactivities of a polymer rich in threo-diisotactic sequences (it rich-2) and a polymer having low stereoregularity (2low) are little different from those of strich-2, the patterns printed with these reference polymers collapsed considerably upon heating as a result of a volume shrinkage effect. The striking difference between strich-2 and the other two polymers most likely arises from the nanofiber-forming character of strich-2, where the printed stripes are porous and much less affected by the volume shrinkage of individual nanofibers.

本文言語English
ページ(範囲)2840-2843
ページ数4
ジャーナルJournal of the American Chemical Society
133
9
DOI
出版ステータスPublished - 2011 3月 9
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)
  • 生化学
  • コロイド化学および表面化学

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