Fibrous assemblies made of amphiphilic metallophthalocyanines

Mutsumi Kimura, Tsuyoshi Muto, Hideaki Takimoto, Kazumi Wada, Kazuchika Ohta, Kenji Hanabusa, Hirofusa Shirai, Nagao Kobayashi

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)

Abstract

A family of copper and zinc phthalocyanine-based amphiphililes possessing racemic and optically active diol units, (rac)-ZnPc(OH)16, (rac)-CuPc(OH)16, and (S)-CuPc(OH)16, have been synthesized. The self-assembling properties of these amphiphiles in aqueous solution have been studied by UV-vis, Fourier transform infrared (FTIR) and circular dichroism (CD) spectroscopies, X-ray diffraction (XRD) patterns, and transmission electron microscopy (TEM). Only the copper complexes produced fibrous assemblies from aqueous solutions through two noncovalent bondings: π-π interaction among phthalocyonine rings and hydrogen bonds among diol units. The formation of fibrous assemblies strongly depends on the central metal of the phthalocyanine complex. The optically active (S)-CuPc(OH)16 is stacked and arranged in a left-handed helix. The chirality of diol units in (S)-CuPc(OH)16 also affects the intercolumnar lattice of phthalocyanine stacks.

Original languageEnglish
Pages (from-to)2078-2082
Number of pages5
JournalLangmuir
Volume16
Issue number5
DOIs
Publication statusPublished - 2000 Mar 7

ASJC Scopus subject areas

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

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