Devon A. Shipp
Professor, Chemistry & Biomolecular Science
Research group homepage: www.clarkson.edu/~dshipp
B.Sc. (Hons) 1992 The University of Melbourne - Chemistry
Ph.D. 1998 The University of Melbourne - Organic, Polymer Chemistry
Postdoctoral Research Fellow 1997 - 1999 Carnegie Mellon University
1. Living radical polymerizations
We have significant experience in new radical polymerization methods that have been developed in recent years, including atom transfer radical polymerization (ATRP), reversible addition-fragmentation chain transfer (RAFT) polymerization and nitroxide-mediated polymerization (NMP). Work in our group is examining what factors affect the mechanism and kinetic parameters, as well as looking into alternate methods of controlling polymerizations. We also utilize these polymerization methods to make novel materials, in particular block copolymers and nanocomposites, for various applications.
2. Degradable network polymers
We have shown that thiol-ene chemistry, a step-growth mechanism of polymerization, can be applied to make materials that are elastomeric, photocurable, undergo surface erosion and have controllable degradation rates, starting from only several hours. Thiol-ene chemistry is also quite simple and has readily available monomers, and the degradable functionality resides in the main chain, rather than a side chain, which reduces the molecular weight of the degradation products compared to chain growth polymerizations. Thus, using thiol-ene chemistry to make polyanhydride network polymers provides significant flexibility in tailoring characteristics such as crosslink density, functionality and hydrophilicity.
3. Nanocomposite structures for photovoltaic applications
We are interested in using block polymers to pattern TiO2 nanoparticles onto conducting glass-these materials may find use in dye-sensitized solar cells and other photovoltaic devices.
4. Novel materials for chemical-mechanical planarization (CMP) technologies
CMP is both a necessary and enabling technology in the integrated circuit manufacturing industry. Essentially it is the polishing of metal and non-metal surfaces with a pad and slurry so that the surface is globally flat and locally perfect. We focus on developing new chemistries that relate to particle-surface interactions that aim to improve surface quality yet provide fast material removal rates.
Current Research Group Personnel
and several undergraduate students
Recent Peer-Reviewed Publications
Thiol-Ene Polymerizations Using Imide-Based Monomers, K.A. Murphy, A.S. Zebertavage, B.E. Kiliman, D.A. Shipp, J. Polym. Sci. Part A: Polym. Chem., 2013, in press. DOI: http://dx.doi.org/10.1002/pola.26884
Recent Developments in Atom Transfer Radical Polymerization (ATRP): Methods to Reduce Metal Catalyst Concentrations, Q. Lou, D.A. Shipp, ChemPhysChem, 2012, 13, 3251-3261. DOI: http://dx.doi.org/10.1002/cphc.201200166
Imprint Lithography with Degradable Elastomeric Polyanhydrides, Q. Lou, D.A. Shipp, ACS Appl. Mater. Interfaces 2012, 4, 4457-4460. DOI: http://dx.doi.org/10.1021/am301312n
Polymer Microspheres Prepared by Water-Borne Thiol-Ene Suspension Photopolymerization, O.Z Durham, S. Krishnan, D.A. Shipp, ACS Macro Lett. 2012, 1, 1134-1137. DOI: http://dx.doi.org/10.1021/mz300358j
Mechanism of Titania Deposition into Cylindrical Poly(styrene-block-4-vinyl pyridine) Block Copolymer Templates, Q. Lou, P. S. Chinthamanipeta, D.A. Shipp, Langmuir 2011, 27, 15206-15212. DOI: http://dx.doi.org/10.1021/la2031686
Reversible-Deactivation Radical Polymerizations, D.A. Shipp, Polym. Revs. 2011, 51, 99-103. DOI: http://dx.doi.org/10.1039/C0PY00416B
Photodecarbonylation and Photoinitiated Polymerization from a Monomer and Polymer Based on the α-Keto Ester Methacryloyl Phenylglyoxylate, K. Omrane, J.-J. Feng, R.E. Partch, D.A. Shipp, Polym. Chem. 2011, 2, 1307-1311. DOI: http://dx.doi.org/10.1039/C0PY00416B
Periodic Titania Nanostructures Using Block Copolymer Templates, P. S. Chinthamanipeta, Q. Lou, D. A. Shipp, ACS Nano 2011, 5, 450-456. DOI: http://dx.doi.org/10.1021/nn102207y
Polyanhydride Networks from Thiol-Ene Polymerizations, B. G. Rutherglen, R. A. McBath, Y. L. Huang, D. A. Shipp, Macromolecules 2010, 43, 10297-10303.
Swelling and Degradation of Hydrogels Synthesized with Degradable Poly(beta-amino ester) Crosslinkers, R. A. McBath, D. A. Shipp, Polym. Chem. 2010, 1, 860-865.
Synthesis and Characterization of PDMS, PVP and PS-Containing ABCBA Pentablock Copolymers, D. Pavlović, J. G. Linhardt, J. F. Künzler, D. A. Shipp, Macromol. Chem. Phys. 2010, 211, 1482-1487. DOI: http://dx.doi.org/10.1002/macp.200900523
Synthesis of Statistical and Block Copolymers Containing Adamantyl and Norbornyl Moieties by Reversible Addition-Fragmentation Chain Transfer Polymerization, Q. Lou, M. A. Kishpaugh, D. A. Shipp, J. Polym. Sci. Part A: Polym. Chem. 2010, 48, 943-951. DOI: http://dx.doi.org/10.1002/pola.23850
Elastomeric and Degradable Polyanhydride Network Polymers by Step-Growth Thiol-Ene Photopolymerization, D. A. Shipp, C. W. McQuinn, B. G. Rutherglen, R. A. McBath, Chem. Commun. 2009, 6415-6417. DOI: http://dx.doi.org/10.1039/b911557a