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Life Sciences
Studies from University of Bath, Department of Chemistry yield new information about life sciences
November 5th, 2009
A report, 'Novel Ti(IV) and Zr(IV) complexes and their application in the ring-opening polymerisation of cyclic esters,' is newly published data in Dalton Transactions. According to recent research from Bath, the United Kingdom, "A series of group 4 amine tris(phenolate) complexes have been prepared and characterised by single crystal X-ray diffraction and multinuclear NMR spectroscopy. It was found that the ligands afforded monomeric titanium complexes and dimeric zirconium structures in the solid-state." "The complexes have been tested for the ring-opening polymerisation of rac-lactide under both solution and melt conditions, which showed varying degrees of selectivity and control, with PDIs in the range of 1.09-2.07. The initiators were also tested for the production of copolymers containing rac-lactide and isosorbide. From NMR spectroscopic analysis and MALDI-TOF mass spectrometry the isosorbide is incorporated into the polymer," wrote E.L. Whitelaw and colleagues, University of Bath, Department of Chemistry. The researchers concluded: "The complexes were also screened for the ring-opening polymerisation of 1,3-dioxan-2-one to produce a polycarbonate with good conversions (24-99%)." Whitelaw and colleagues published their study in Dalton Transactions (Novel Ti(IV) and Zr(IV) complexes and their application in the ring-opening polymerisation of cyclic esters. Dalton Transactions, 2009;(41):9020-5). For additional information, contact E.L. Whitelaw, University of Bath, Dept. of Chemistry, Claverton Down, Bath, UK BA2 7AY. Publisher contact information for the journal Dalton Transactions is: Royal Society of Chemistry, Cambridge, Thomas Graham House, Science Park, Milton Road, Cambridge CB4 0WF United Kingdom. Keywords: United Kingdom, Bath, Life Sciences, Surgery, Spectroscopy. This article was prepared by NewsRx editors from staff and other reports. Copyright 2009, NewsRx.com.
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