Hydrogen bonds not only provide a structural scaffold to assemble donor and acceptor moieties of zinc porphyrin-quinone dyads but also control the photoinduced electron transfer to afford the long-lived charge-separated states

Article Abstract:

A series of zinc porphyrin-quinone linked dyads were designed and synthesized to investigate the effects of hydrogen bonds. It was concluded that the hydrogen bond provides a structural scaffold to assemble donor and acceptor moieties as well as controls the photoinduced electron-transfer process, leading to the achievement of the charge-separated state with a long lifetime up to a microsecond.

Hydrogen bonding, Hydrogen bonds, Quinone, Quinones, Zinc compounds

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Noncovalent functionalization of single-walled carbon nanotubes with water-soluble porphyrins

Article Abstract:

Water-soluble porphyrin molecules were employed to solubilize single-walled carbon nanotubes (SWNTs), resulting in aqueous solutions that are stable for many weeks. It was found that the porphyrins/SWNT interaction was selective for the free-base form, and this interaction stabilized the free base against protonation to diacid.

Carbon compounds, Nanotubes

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Exitonic coupling between B and Q transitions in a porphyrin aggregate

Article Abstract:

Aggregation distinctively changes the absorption and fluorescence anisotropy spectrum of beta-tetraethyl-tetrapyridinyl-porphyrin. It is observed that a large excitonic splitting of the B band occurs, and the Q band absorption is distinctively enhanced.

Analysis, Anisotropy, Chemistry, Physical and theoretical, Physical chemistry

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