ATP as building blocks for the self-assembly of excitonic nanowires

Masa-Aki Morikawa, Masakuni Yoshihara, Takeshi Endo, Nobuo Kimizuka

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

Supramolecular nanowires are specifically self-assembled from adenosine 5′-triphosphate (ATP) and dichloro-substituted thiacarbocyanine dyes. Spectral blue-shift and induced circular dichroism with exciton coupling are observed upon mixing the dye and ATP molecules in water. These observations indicate the formation of chiral 1/ATP supramolecular assemblies with excitation energy delocalized in the parallel-oriented (H-aggregated) chromophores. Interestingly, formation of H-aggregates is facilitated most in the presence of ATP and not by other nucleotides (ADP or AMP). In electron microscopy, aqueous 1/ATP mixture gives developed nanowires with a minimum width of ca. 10 nm and lengths of several micrometers. The ATP-directed nanowires exhibit reversible thermal self-assembly accompanied by supramolecular thermochromism. This is the first example of ATP-based supramolecular nanoassemblies, and the use of small biomolecules as building blocks for functional supermolecules provides a new perspective in the design of bio-nanomaterials.

Original languageEnglish
Pages (from-to)1358-1359
Number of pages2
JournalJournal of the American Chemical Society
Volume127
Issue number5
DOIs
Publication statusPublished - Feb 9 2005

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Nanowires
Adenosine
Self assembly
Adenosine Triphosphate
Dyes
Administrative data processing
Excitation energy
Dichroism
Biomolecules
Chromophores
Nucleotides
Nanostructured materials
Excitons
Electron microscopy
Coloring Agents
Molecules
Nanostructures
Adenosine Monophosphate
Circular Dichroism
triphosphoric acid

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

ATP as building blocks for the self-assembly of excitonic nanowires. / Morikawa, Masa-Aki; Yoshihara, Masakuni; Endo, Takeshi; Kimizuka, Nobuo.

In: Journal of the American Chemical Society, Vol. 127, No. 5, 09.02.2005, p. 1358-1359.

Research output: Contribution to journalArticle

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