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1995 Fiscal Year Final Research Report Summary

The Solution and Interface Properties of Photosurfactants and their Application to Polymer Gel Volume Control

Research Project

Project/Area Number 06640749
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 機能・物性・材料
Research InstitutionSAGA UNIVERSITY

Principal Investigator

SHIRAHAMA Keishiro  Department of Chemistry, Saga University, 理工学部, 教授 (50039252)

Co-Investigator(Kenkyū-buntansha) HAYASHITA Takashi  Department of Chemistry, Saga University, Assistant Professor, 理工学部, 助教授 (70183564)
Project Period (FY) 1994 – 1995
KeywordsPhotosurfactant / Trans / cis isomerization / Micelle / Cyclodextrin / Surfactant-selective electrode / Induced circular dichroism / Polyanion / Cooperative interaction
Research Abstract

1.4-alkylazobenzene 4'-oxyethyltrimethylammonium bromides form micelles in aqueous solution, which undergoes trans/cis isomerization on visible/UVlight irradiation, thus given a name : photosurfactant. The critical micelle concentration of trans/cis mixture decreases as the cis content increases, which is explained in terms of the bend molecular structure and increased dipole moment of the cis-form.
2.Interaction of photosurfactant with cyclodextrins is studied by means of potentiometric and circular dichroism spectroscopic methods. It is found that the surfactant-selective electrode senses the trans-form stronger than the cis-form by about 100 times. Chiral molecular field of cyclodextrins is found to induced circular dichroism to the photsurfactants which is directly proportional to the amount of included surfactant molecules. alpha-Cyclodextrins forms a 1 : 1 complex with the trans-form, but cis-form is rejected because of its bent molecular structure. beta-Cyclodextrin forms 1 : 1 complexes with both trans-and cis-forms, with a little less affinity than alpha-cyclodextrin. gamma-Cyclodextrin takes such complex ration as 2 : 1,2 : 2 in addition to 1 : 1 (surfactant : cylcodextrin).
3.Binding of photosurfactant with sodium poly (acrylamido 2-methyl-propane sulfonate) is measured the potentiometric method. The interaction is highly cooperative, and the binding from the trans/cis mixtures introduces a difficult problem of binding from a mixed surfactant solution, which is left for further investigation.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] K.Shirahama et al.: "A Cationic Surfactantis bound to Poly(vinglpyrrolidone)in High pH Media" Colloid Polym.Sci.,. 272. 493-496 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Mukae et al.: "Swelling of Poly(N-isopropylacrylanide)Gels in Water-Aprotic Solvent Mix tures" Colloid Polym.Sci.,. 272. 655-663 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] L.Yang et al.: "Colloid Chemicul Characterization of the photosurfactant,4-Ethylazibengene-4-・・・・・" J.Phys.Chem.,. 99. 8799-8803 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] L.Yang et al.: "Interaction of photosukfactant,4-alkyl-benzene-4'-oxyethyltrimethyl ammonium・・・・・" Langmuir. 12. 1154-1158 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Shirahama et al.: "Interaction of Amphiphiles with Poly sacoharides in “Cellulose and Cellrilose Derivatives"" Woodhead Pub.,Cambridge ed. by J.F.Kennedy, 11 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Shirahama et al.: "A Cationic Surfactant is bound to Poly (vinylpyrrolidone) in High pH Media" Colloid Polym. Sci.272. 493-496 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.M,Kae et al.: "Swelling of Poly (N-isopropyl acrylamide) Gels in Water-Aprotic Solvent Mixtures" Colloid Polym. Sci.272. 655-663 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] L.Yang et al.: "Colloid Chemical Character-ization of the Photosurfactant, 4-Ethylazobenzene 4'-oxyethyl trimethylammonium Bromide" J.Phys.Chem.99. 8799-8803 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] L.Yang et al.: "Interaction of Photosurfactant, 4-alkylazobenzene 4'oxyethyltrimethylammonium bromide with alpha-, and beta-Cyclodextrins" Langmuir. 12. 1154-1158 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Shirahama et al.: "Interaction of Amphiphiles with Polysaccharides" in "Cellulose and Cellulose Derivatives : Physico-chemical Aspects and Industrial Applications" ed., J.F.Kennedy et al., Woodhead Pub., Cambridge. 1995. 295-306

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1997-03-04  

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