Direct observation of an isolated cyclic sodium poly(styrenesulfonate) molecule by atomic force microscopy

Daisuke Kawaguchi, Takashi Nishu, Atsushi Takano, Yushu Matsushita

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A cyclic sodium poly (styrenesulfonate) (c-PSS) from cyclic polystyrene by sulfonation reaction was prepared and the closed loop structure of the isolated cyclic polyelectrolyte was observed by scanning probe microscopy (SPM). Linear polystyrene, 1-PS was prepared by a living anionic polymerization using naphthalene potassium as an initiator and weight-averaged molecular weight of 1-PS was determined by multi-angle laser light scattering (MALLS). Degrees of sulfonation of c-PSS and 1-PSS, determined by inductively coupled plasma (ICP) mass spectroscopy, were 74% and 72% respectively. The PSS molecules were observed by atomic force microscopy (CFM) with intermittent contact mode and a cantilever tip, microfabricated from silicon, was used for the observation. The result shows that the ring-shaped structure of a synthetic cyclic polymer is evidently confirmed based on the direct observation of the individual chains by AFM.

Original languageEnglish
Pages (from-to)271-275
Number of pages5
JournalPolymer Journal
Volume39
Issue number3
DOIs
Publication statusPublished - May 11 2007
Externally publishedYes

Fingerprint

Sulfonation
Polystyrenes
Atomic force microscopy
Sodium
Scanning probe microscopy
Molecules
Living polymerization
Anionic polymerization
Inductively coupled plasma
Silicon
Naphthalene
Polyelectrolytes
Light scattering
Potassium
Polymers
Molecular weight
Spectroscopy
Lasers
polystyrene sulfonic acid
naphthalene

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Direct observation of an isolated cyclic sodium poly(styrenesulfonate) molecule by atomic force microscopy. / Kawaguchi, Daisuke; Nishu, Takashi; Takano, Atsushi; Matsushita, Yushu.

In: Polymer Journal, Vol. 39, No. 3, 11.05.2007, p. 271-275.

Research output: Contribution to journalArticle

Kawaguchi, Daisuke ; Nishu, Takashi ; Takano, Atsushi ; Matsushita, Yushu. / Direct observation of an isolated cyclic sodium poly(styrenesulfonate) molecule by atomic force microscopy. In: Polymer Journal. 2007 ; Vol. 39, No. 3. pp. 271-275.
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