Photoreactive molecule incorporated within dendritic architecture

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Dendrimers or dendrons having chromophore at the core or focal point were synthesized, and effects of dendritic substituent on photofunctionality were investigated. We found photoisomerization from ally! alcohol to ketone by the use of dendrimer disulfide as catalyst. Various photooxygenation reactions proceeded by the use of Cd10S16 molecular cluster dendrimer or fullerodendron as photosensitizer of singlet oxygen. Photoinduced charge separation of fullerodendrimers take place with high quantum efficiency in aqueous solution. In the presence of viologen dication and a sacrificial donor, the persistent viologen radical cation was generated. This electron pooling efficiency was obviously enhanced by the use of single-walled carbon nanotube/fullerodendron supramolecular system.

Original languageEnglish
Pages (from-to)705-714
Number of pages10
JournalYuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry
Volume69
Issue number6
DOIs
Publication statusPublished - Jun 2011

Fingerprint

Dendrimers
Viologens
Molecules
Photoisomerization
Singlet Oxygen
Photosensitizing Agents
Single-walled carbon nanotubes (SWCN)
Chromophores
Ketones
Quantum efficiency
Disulfides
Cations
Alcohols
Catalysts
Electrons

Keywords

  • Carbon nanotube
  • Dendrimer
  • Dendron
  • Diselenide
  • Disulfide
  • Electron transfer
  • Fullerene
  • Molecular cluster
  • Photoreaction
  • Singlet oxygen

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

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abstract = "Dendrimers or dendrons having chromophore at the core or focal point were synthesized, and effects of dendritic substituent on photofunctionality were investigated. We found photoisomerization from ally! alcohol to ketone by the use of dendrimer disulfide as catalyst. Various photooxygenation reactions proceeded by the use of Cd10S16 molecular cluster dendrimer or fullerodendron as photosensitizer of singlet oxygen. Photoinduced charge separation of fullerodendrimers take place with high quantum efficiency in aqueous solution. In the presence of viologen dication and a sacrificial donor, the persistent viologen radical cation was generated. This electron pooling efficiency was obviously enhanced by the use of single-walled carbon nanotube/fullerodendron supramolecular system.",
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AU - Tajima, Tomoyuki

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AB - Dendrimers or dendrons having chromophore at the core or focal point were synthesized, and effects of dendritic substituent on photofunctionality were investigated. We found photoisomerization from ally! alcohol to ketone by the use of dendrimer disulfide as catalyst. Various photooxygenation reactions proceeded by the use of Cd10S16 molecular cluster dendrimer or fullerodendron as photosensitizer of singlet oxygen. Photoinduced charge separation of fullerodendrimers take place with high quantum efficiency in aqueous solution. In the presence of viologen dication and a sacrificial donor, the persistent viologen radical cation was generated. This electron pooling efficiency was obviously enhanced by the use of single-walled carbon nanotube/fullerodendron supramolecular system.

KW - Carbon nanotube

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KW - Singlet oxygen

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