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

Dhar, Shanta ; Chakravarty, Akhil R. (2005) Photosensitizer in a molecular bowl: steric protection enhancing the photonuclease activity of copper(II) scorpionates Inorganic Chemistry, 44 (8). pp. 2582-2584. ISSN 0020-1669

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic050085a

Related URL: http://dx.doi.org/10.1021/ic050085a

Abstract

Steric encumbrance caused by the tripodal ligand in the ternary tris(3-phenylpyrazolyl)borate copper(II) heterocyclic base complexes [Cu(B)(TpPh)](ClO4) (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.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:6120
Deposited On:19 Oct 2010 10:53
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