Influence of temperature and type of solvents on the microdomain orientation of PS-b-P2VP ultrathin films by solvent annealing

Siti Aisyah Shamsudin, Go Sakaguchi, Mikihito Takenaka, Hirokazu Hasegawa

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The effect of temperature and type of solvent on the microdomain orientation during solvent-annealing of block copolymer ultrathin films on silicon substrates was investigated using asymmetric polystyrene-block-poly(2- vinylpyridine) (PS-b-P2VP) diblock copolymer. When the solvent-annealing was performed with THF at 20°C, the ultrathin film exhibited a mixed orientation of cylinders parallel and perpendicular to the substrate while at 25°C only parallel cylinders were observed by AFM. The solvent annealing with acetone gave a dot pattern at 20°C and a line pattern at 25°C. On the other hand, in the case of solvent-annealing with toluene perpendicular cylinders were observed at 25°C while at 20°C the morphology was not clear. The orientation and morphology of microdomains as well as the kinetics in PS-b-P2VP ultrathin films on solvent-annealing is significantly affected by temperature and type of solvent. By controlling temperature and selecting the solvent, perpendicular cylinders can be formed predominantly on the substrates.

Original languageEnglish
Pages (from-to)72-79
Number of pages8
JournalMacromolecular Symposia
Volume327
Issue number1
DOIs
Publication statusPublished - May 2013
Externally publishedYes

Fingerprint

Ultrathin films
Polystyrenes
polystyrene
Annealing
annealing
Temperature
temperature
Block copolymers
Substrates
polystyrene-block-poly(2-vinylpyridine)
Toluene
Silicon
Acetone
block copolymers
acetone
toluene
copolymers
atomic force microscopy
Kinetics
kinetics

Keywords

  • AFM
  • block copolymer
  • microphase separation
  • self-assembly
  • solvent-annealing
  • ultrathin film

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

Influence of temperature and type of solvents on the microdomain orientation of PS-b-P2VP ultrathin films by solvent annealing. / Shamsudin, Siti Aisyah; Sakaguchi, Go; Takenaka, Mikihito; Hasegawa, Hirokazu.

In: Macromolecular Symposia, Vol. 327, No. 1, 05.2013, p. 72-79.

Research output: Contribution to journalArticle

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