Temperature-responsive one-dimensional nanogels formed by the cross-linker-aided single particle nanofabrication technique

Masaaki Omichi, Hiromi Marui, Katsuyoshi Takano, Satoshi Tsukuda, Masaki Sugimoto, Susumu Kuwabata, Shu Seki

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

A single particle nanofabrication technique was successfully applied to the fabrication of homogeneous poly(N-isopropylacrylamide) (PNIPAAm) 1D nanogels over a large area, using N,N′-methylene-bis-acrylamide (MBAAm) as a cross-linker. The PNIPAAm 1D nanogels with high aspect ratio over 130 were formed uniformly on the substrate, and the mechanical strength and the length of the 1D nanogels can be easily controlled by adjusting the MBAAm content. The 1D nanogels were transformed from the non-aggregated to aggregated forms over a lower critical solution temperature (LCST) of approximately 32 °C in water. Precise trace of the temperature induced change in the size of the 1D nanogel was well interpreted by the coil-to-globule transition of PNIPAAm, which was clearly visualized in the present study. This is the first report of uniform shape change for a 1D nanogel by external stimulus over a large area.

Original languageEnglish
Pages (from-to)5492-5497
Number of pages6
JournalACS Applied Materials and Interfaces
Volume4
Issue number10
DOIs
Publication statusPublished - 2012 Oct 24

Keywords

  • N,N?-methylene-bis-acrylamide
  • cross-linker
  • nanogel
  • poly(N-isopropylacrylamide)
  • single particle nanofabrication technique
  • temperature-responsive

ASJC Scopus subject areas

  • Materials Science(all)

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