Asymmetric Properties of Ultrathin Poly(vinylchloride) Films as Generated by Molecular Association of Ionic Porphyrins at the Polymer-Water Interface

Sunao Yamada, Hiroshi Iida, Taku Matsuo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An amphiphilic porphyrin derivative, 4,4′,4″,4‴-(21H,23H-porphine-5,10,15,20-tetrayl)tetrakis[l- hexadecylpyridinium] cation or its zinc complex (abbreviated as MC16TPyP), was preferentially impregnated on a single surface of an ultrathin poly(vinylchloride) film prepared by casting the polymer solution on water. Enrichment of the cationic porphyrin moiety to the polymer-water interface during the film preparation was strongly indicated by contact-angle measurement of water-droplets on the dry surface. A subsequent treatment of the film with an aqueous solution, which contained an anionic porphyrin (4,4′,4″, 4‴-(21 H, 23H-porphine-5,10,15,20-tetrayl)tetrakis[p-benzenesulfonatej anion or its copper or zinc complex: M'TPPS), led to molecular association of the two-types of porphyrins (MC16TPyP-M'TPPS) on the film surface. Spectroscopic evidences for the formation of molecular association on the thin film were obtained by measuring electronic absorption, fluorescence, and optical second-harmonic generation.

Original languageEnglish
Pages (from-to)1729-1735
Number of pages7
JournalBerichte der Bunsengesellschaft/Physical Chemistry Chemical Physics
Volume100
Issue number10
Publication statusPublished - Dec 1 1996

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Porphyrins
Polymers
Water
Zinc
Cetylpyridinium
Film preparation
Polymer solutions
Angle measurement
Harmonic generation
Contact angle
Anions
Cations
Copper
Casting
Negative ions
Positive ions
Fluorescence
Derivatives
Thin films
porphine

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

Cite this

Asymmetric Properties of Ultrathin Poly(vinylchloride) Films as Generated by Molecular Association of Ionic Porphyrins at the Polymer-Water Interface. / Yamada, Sunao; Iida, Hiroshi; Matsuo, Taku.

In: Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics, Vol. 100, No. 10, 01.12.1996, p. 1729-1735.

Research output: Contribution to journalArticle

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