Conformational control in a bipyridine linked pi-conjugated oligomer: Cation mediated helix unfolding and refolding

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Title:	Conformational control in a bipyridine linked pi-conjugated oligomer: Cation mediated helix unfolding and refolding
Authors:	Divya, K P Sreejith, S Suresh, C H Ajayaghosh, A
Keywords:	Nonbiological oligomers Molecular-motion Coil transition Foldamers Polyelectrolyte
Issue Date:	2010
Publisher:	Royal Society of Chemistry
Citation:	Chemical Communications 46(44):8392-8394;2010
Abstract:	A chiral pi-conjugated oligomer having alternate bipyridine and carbazole moieties connected through acetylinic bonds undergoes helical folding in chloroform-acetonitrile (40/60, v/v) as evident by fluorescence and circular dichroism changes. In the presence of transition metal cations such as Zn(2+) defolding of the helical conformation occurs. Upon decomplexation of the cation with EDTA, the helical conformation is regained.
URI:	http://ir.niist.res.in:8080/jspui/handle/123456789/1259
ISSN:	1359-7345
Appears in Collections:	2010

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