Nanoscopic fibrous assemblies made of metallophthalocyanine-terminated amphiphilic polymers

Mutsumi Kimura, Hiroyuki Ueki, Kazuchika Ohta, Kenji Hanabusa, Hirofusa Shirai, Nagao Kobayashi

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Atom-transfer radical polymerization (ATRP) of acrylates from the initiator-modified zinc phthalocyanine yielded amphiphilic, phthalocyanine- terminated polymers with a narrow molecular-weight distribution. The disklike phthalocyanine moiety was incorporated into one end of the polymer chain. We investigated the aggregation behavior of phthalocyanine-terminated polymers in solution and in the solid state by using UV-visible, FT-IR, differential scanning calorimetry (DSC), and temperature-controlled powder X-ray diffraction (XRD) measurements. Amphiphilic phthalocaynine-terminated polymers that possess a poly[tri(ethylene glycol)methyl ether acrylate] chain aggregate in methanol to form a physical gel. Images from atomic force microscopy (AFM) and transmission electron microscopy (TEM) indicate that the physical gel contains a dense fibrous network structure, in which the zinc phthalocyanine groups were stacked into one-dimensional columnar aggregates through in-termolecular π-π interactions between the π-conjugated phthalocyanines and through van der Waals interaction of alkyl chains.

Original languageEnglish
Pages (from-to)4954-4959
Number of pages6
JournalChemistry - A European Journal
Issue number20
Publication statusPublished - 2004 Oct 11


  • Living polymerization
  • Nanostructures
  • Phthalocyanines
  • Self-assembly
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry


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