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Photosensitizer in a Molecular Bowl: Steric Protection Enhancing the Photonuclease Activity of Copper(II) Scorpionates

Dhar, Shanta and Chakravarty, Akhil R (2005) Photosensitizer in a Molecular Bowl: Steric Protection Enhancing the Photonuclease Activity of Copper(II) Scorpionates. In: Inorganic Chemistry, 44 (8). pp. 2582-2584.

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Abstract

Steric encumbrance caused by the tripodal ligand in the ternary tris(3-phenylpyrazolyl)borate copper(II) heterocyclic base complexes $[Cu(B)(Tp^P^h)](ClO_4$) (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 $\lbrace Cu(Tp^P^h) \rbrace$ moiety, which generates singlet oxygen as the reactive species in a type-II process.

Item Type: Journal Article
Additional Information: Copyright of this item belongs to American Chemical Society.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 27 Feb 2006
Last Modified: 19 Sep 2010 04:23
URI: http://eprints.iisc.ernet.in/id/eprint/5579

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