Photosensitizer in a molecular bowl: Steric protection enhancing the photonuclease activity of copper(II) scorpionates

Shanta Dhar, Akhil R. Chakravarty

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

Steric encumbrance caused by the tripodal ligand in the ternary tris(3-phenylpyrazolyl)borate copper(II) heterocyclic base complexes [Cu(B)(TpPh)](ClIO4) (B = dipyridoquinoxaline, dipyridophenazine) leads to efficient cleavage of supercoiled DNA to its relaxed form upon exposure to red light at 632.8 and 694 nm as a result of protection of the photosensitizer in the molecular bowl of the {Cu(TpPh)} moiety, which generates singlet oxygen as the reactive species in a type-II process.

Original languageEnglish (US)
Pages (from-to)2582-2584
Number of pages3
JournalInorganic Chemistry
Volume44
Issue number8
DOIs
StatePublished - Apr 18 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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