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Issue 2, 2009
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Photo-induced self-assembly of Pt(ii)-linked rings and cages via the photolabilization of a Pt(ii)–py bond

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Abstract

An inert Pt(II)–pyridine bond is considerably labilized upon UV irradiation. On the basis of this phenomenon, kinetically inert Pt(II)-linked coordination rings and cages are formed in high yields from their components by obtaining a kinetically distributed mixture and subsequently equilibrating the mixture into the thermodynamically stable structures upon temporary photolabilization. This method is applicable when the pyridine rings in the ligands are not conjugated with other aromatic rings, in good agreement with DFT calculations that indicate the dependency of the photolability on the π-conjugation of the ligand frameworks. Interruption of π-conjugation either by introducing an methylene linker or by twisting the aromatic rings are effective to accomplish the photo-induced self-assembly.

Graphical abstract: Photo-induced self-assembly of Pt(ii)-linked rings and cages via the photolabilization of a Pt(ii)–py bond

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Supplementary files

Article information


Submitted
08 Oct 2008
Accepted
28 Nov 2008
First published
13 Jan 2009

New J. Chem., 2009,33, 264-270
Article type
Paper

Photo-induced self-assembly of Pt(II)-linked rings and cages via the photolabilization of a Pt(II)–py bond

K. Yamashita, K. Sato, M. Kawano and M. Fujita, New J. Chem., 2009, 33, 264
DOI: 10.1039/B817713A

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