Negative- and positive-type photopatterning methods of an adsorbed monomolecular film formed from multivalent cationic adsorbates

Masaru Nakagawa, Nozomi Nawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Electrostatically adsorbed single-layered organic films exhibiting desorption-resistance toward deionized water were formed on a negatively charged substrate surface from multivalent cationic adsorbate molecules possessing plural pyridinium groups as adsorption sites. UV-visible transmission absorption spectroscopy, contact angle measurement, and zeta potential measurement suggested that promotion and suppression of the desorption-resistance were brought about by photochemical dimerization and decomposition of the adsorbate molecules on the substrate due to an increase and a decrease of the number of adsorption sites per adsorbate molecule. Based on the photoinduced alteration of the desorption-resistance, we proposed novel negative- and positive-type photopatterning methods of the adsorbed monomolecular film. We demonstrated here that polystyrene particles charged either negatively or positively could be adsorbed site-selectively and selective electroless nickel plating was caused in accordance with a shape of photopatterned monolayers.

Original languageEnglish
Pages (from-to)531-538
Number of pages8
JournalKOBUNSHI RONBUNSHU
Volume60
Issue number10
DOIs
Publication statusPublished - 2003 Oct
Externally publishedYes

Keywords

  • Adsorbed monolayer
  • Adsorption
  • Electroless plating
  • Interfacial science
  • Microscophere
  • Patterning
  • Photochemistry

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Environmental Science(all)
  • Polymers and Plastics

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