Dr Rachel Platel


Research Overview

I am interested in controlling monomer sequence in copolymerizations to prepare perfectly alternating copolymers. In particular, biocompatible and biodegradable polyesters such as polylactide and polycaprolactone are currently of great interest, largely due to their biomedical applications. However, controlling the rate of polymer degradation can be difficult. Combining two monomers with different physical properties allows the properties of the resulting polymer to be tuned. One of the simplest ways to control the sequence of monomers in a polymer would be through design of the metal initiator.

My research involves both the design of new group 3 and lanthanide complexes and their use as initiators in ring-opening polymerization reactions with combinations of a variety of cyclic ester monomers, with the aim of preparing alternating copolymers. I am also interested in determining the physical properties of the resulting materials and exploring possible applications. My research is interdisciplinary, encompassing inorganic, coordination, polymer and materials chemistry.

Reducing zirconium(IV) phthalocyanines and the structure of a Pc4-Zr complex
Zhou, W., Platel, R.H., Tasso, T.T., Furuyama, T., Kobayashi, N., Leznoff, D.B. 21/08/2015 In: Dalton Transactions. 44, 31, p. 13955-13961. 7 p.
Journal article

Stereoelectronic control of photophysics: red and yellow axial and equatorial anomers of a rhenium-quinoline complex
Platel, R.H., Coogan, M.P., Platts, J.A. 14/07/2015 In: Dalton Transactions. 44, 26, p. 11700-11704. 5 p.
Journal article

Metallophthalocyanin-ocenes: scandium phthalocyanines with an eta(5)-bound Cp ring
Platel, R.H., Tasso, T.T., Zhou, W., Furuyama, T., Kobayashi, N., Leznoff, D.B. 7/04/2015 In: Chemical Communications. 51, 27, p. 5986-5989. 4 p.
Journal article

Diamido-Ether Actinide Complexes as Catalysts for the Intramolecular Hydroamination of Aminoalkenes
Hayes, C.E., Platel, R.H., Schafer, L.L., Leznoff, D.B. 8/10/2012 In: Organometallics. 31, 19, p. 6732-6740. 9 p.
Journal article

Bis(8-quinolinolato)aluminum ethyl complexes: Iso-Selective Initiators for rac-Lactide Polymerization
Bakewell, C., Platel, R.H., Cary, S.K., Hubbard, S.M., Roaf, J.M., Levine, A.C., White, A.J.P., Long, N.J., Haaf, M., Williams, C.K. 9/07/2012 In: Organometallics. 31, 13, p. 4729-4736. 8 p.
Journal article

Zirconium catalyzed alkyne dimerization for selective Z-enyne synthesis
Platel, R.H., Schafer, L.L. 2012 In: Chemical Communications. 48, 86, p. 10609-10611. 3 p.
Journal article

Mechanistic Elucidation of Intramolecular Aminoalkene Hydroamination Catalyzed by a Tethered Bis(ureate) Complex: Evidence for Proton-Assisted C-N Bond Formation at Zirconium
Leitch, D.C., Platel, R.H., Schafer, L.L. 5/10/2011 In: Journal of the American Chemical Society. 133, 39, p. 15453-15463. 11 p.
Journal article

Bis(phosphinic)diamido Yttrium Amide, Alkoxide, and Aryloxide Complexes: An Evaluation of Lactide Ring-Opening Polymerization Initiator Efficiency
Platel, R.H., White, A.J.P., Williams, C.K. 15/08/2011 In: Inorganic Chemistry. 50, 16, p. 7718-7728. 11 p.
Journal article

Iminophosphorane Neodymium(III) Complexes As Efficient Initiators for Lactide Polymerization
Buchard, A., Platel, R.H., Auffrant, A., Le Goff, X.F., Le Floch, P., Williams, C.K. 12/07/2010 In: Organometallics. 29, 13, p. 2892-2900. 9 p.
Journal article

First neodymium(III) alkyl-carbene complex based on bis(iminophosphoranyl) ligands
Buchard, A., Auffrant, A., Ricard, L., Le Goff, X.F., Platel, R.H., Williams, C.K., Le Floch, P. 2009 In: Dalton Transactions. 46, p. 10219-10222. 4 p.
Journal article

Stereocontrolled lactide polymerisation determined by the nuclearity of the yttrium initiator
Platel, R.H., White, A.J.P., Williams, C.K. 2009 In: Chemical Communications. 27, p. 4115-4117. 3 p.
Journal article

A Series of Bis(thiophosphinic amido)yttrium Initiators for Lactide Ring-Opening Polymerization
Hodgson, L.M., Platel, R.H., White, A.J.P., Williams, C.K. 25/11/2008 In: Macromolecules. 41, 22, p. 8603-8607. 5 p.
Journal article

A series of bis(phosphinic)diamido yttrium complexes as initiators for lactide polymerization
Platel, R.H., White, A.J.P., Williams, C.K. 4/08/2008 In: Inorganic Chemistry. 47, 15, p. 6840-6849. 10 p.
Journal article

Biocompatible initiators for lactide polymerization
Platel, R.H., Hodgson, L.M., Williams, C.K. 2008
Literature review

Synthesis and characterization of a series of bis(oxo/thiophosphinic)diamido yttrium complexes and their application as initiators for lactide ring-opening polymerization
Platel, R.H., Hodgson, L.M., White, A.J.P., Williams, C.K. 24/09/2007 In: Organometallics. 26, 20, p. 4955-4963. 9 p.
Journal article