Preparation of polymer Langmuir-Blodgett films containing porphyrin chromophore

Fei Feng, Masaya Mitsuishi, Tokuji Miyashita, Ichiro Okura, Keisuke Asai, Yutaka Amao

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The polymer Langmuir-Blodgett films containing a large porphyrin chromophore were prepared from a copolymer(pADA-Por) consisting of N-[(N′-aminopropyl)pyridyltriphenylporphyrinate (Zn(II))]acrylamide (Por) and N-adamantylacrylamide (ADA). The spreading behavior of the copolymer on the water surface was investigated by the measurement of surface pressure (π)-surface area (A) isotherm. The isotherm indicates that the pADA-Por copolymer forms a stable condensed monolayer with a steep rise in surface pressure and has a collapse pressure of 30 mN/m where a hydrogen bonding based on amide structure is working as a self-assembling factor. The monolayer can be transferred onto solid supports giving a typical Y-type LB film. A flat orientation of the porphyrin ring in the LB films was discussed from the absorption dichroism measurement.

Original languageEnglish
Pages (from-to)8673-8677
Number of pages5
JournalLangmuir
Volume15
Issue number25
DOIs
Publication statusPublished - 1999 Dec 7

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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