A simple route for the preparation of mesoporous nanostructures using block copolymers

Dian Chen, Soojin Park, Jiun-Tai Chen, Emily Redston, Thomas P. Russell

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

Abstract

Poly(styrene-b-4-vinylpyridine) (PS-b-P4VP) nanostructures with multiple morphologies were fabricated by immersing PS-b-P4VP nanotubes in ethylene glycol, a nonsolvent for PS and a good solvent for P4VP, at different temperatures. Mesoporous structures were generated from uniform nanoscopic wormlike micelles due to a solvent-induced reconstruction when the spherical micellar structures were heated above the glass transition temperature of the PS block. The mesoporous nanostructures can be converted into inorganic oxide structures, like SiO2 and TiO2, by well-known sol-gel methods. The mesoporous inorganic oxides can be produced with tunable porosity by controlling the molecular weight of the block copolymers. Confinement also plays an important role to create the nanostructures with unusual morphologies.

Original languageEnglish
Pages (from-to)2827-2833
Number of pages7
JournalACS Nano
Volume3
Issue number9
DOIs
StatePublished - 22 Sep 2009

Keywords

  • Block copolymer
  • Ethylene glycol
  • Mesoporous structure
  • Morphologies nanotube(s)

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