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
Affiliations & Awards
Fulbright Scholar to Slovenia (January - July 2015)
Associate Editor, Australian Journal of Chemistry 2012 - present
Clarkson University Student Association Outstanding Teacher Award 2000-2001
Bayer Postdoctoral Research Fellowship at Carnegie Mellon University (1998)
Chair American Chemical Society Northern New York Local Section (2008 - 2013)
Exhibit Chair for ACS-Northeast Regional Meeting (NERM), held at SUNY Potsdam June 2010
Fellow of the Royal Australian Chemical Institute (RACI), Member of the American Chemical Society (ACS), Member of the Materials Research Society (MRS)
1. Reversible-Deactivation (‘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. Novel Methods to Synthesize Degradable Polymers
We have shown that thiol-ene chemistry, a step-growth mechanism of polymerization, can be applied to make materials that are amorphous or semicrystalline, photocurable, undergo surface erosion and have controllable degradation rates, starting from only several hours up to weeks. 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 when 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. Novel Polymer Particle Synthesis
We are developing new methods for polymer particle synthesis based on water-borne thiol-ene/yne polymerizations. These polymerizations leverage multiple ‘click’ chemistry attributes so that colloidal particles can be made quickly and efficiently, with stoichiometrically-controlled chemical functionality, uniform crosslinking, and using an environmentally friendly reaction medium (water). This provides a significant opportunity to construct a new and transformational paradigm in polymer colloids, one that will result in sustainable, environmentally friendly, and high impact technologies.
4. Novel 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
Dr. Halimatu Mohammed
and several undergraduate students
Select Recent Peer-Reviewed Publications
Reaction-diffusion degradation model for delayed erosion of cross-linked polyanhydride biomaterials
S. Domanskyi, K. L. Poetz, D. A. Shipp, V. Privman
Phys. Chem. Chem. Phys., 2015, in press.
Photopolymerized Crosslinked Thiol-Ene Polyanhydrides: Erosion, Release and Toxicity Studies
K. L. Poetz, H. S. Mohammed, B. L. Snyder, G. Liddil, D. S. K. Samways, D. A. Shipp
Biomacromolecules, 2014, 15, 2573-2582.
Suspension Thiol-Ene Photopolymerization: Effect of Stabilizing Agents on Particle Size and Stability
O. Z. Durham, D.A. Shipp
Polymer, 2014, 55, 1674-1680.
Role of 1,2,4-Triazole as a Passivating Agent for Cobalt during Post-Chemical Mechanical Planarization Cleaning
M. Zhong, S.S. Venkataraman, Y. Lan, Y. Li, D.A. Shipp
J. Electrochem. Soc., 2014, 161, C138-144.
RAFT Polymerization of Monomers with Highly Disparate Reactivities: Use of a Single RAFT Agent and the Synthesis of Poly(styrene-block-vinyl acetate)
L.A. Dayter, K.A. Murphy, D.A. Shipp
Aust. J. Chem., 2013, 66, 1564-1569.
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, 51, 4637-4642.
Recent Developments in Atom Transfer Radical Polymerization (ATRP): Methods to Reduce Metal Catalyst Concentrations
Q. Lou, D.A. Shipp
ChemPhysChem, 2012, 13, 3251-3261.
Imprint Lithography with Degradable Elastomeric Polyanhydrides
Q. Lou, D.A. Shipp
ACS Appl. Mater. Interfaces2012, 4, 4457-4460.
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.
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.
Reversible-Deactivation Radical Polymerizations
Polym. Revs.2011, 51, 99-103.
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.
Periodic Titania Nanostructures Using Block Copolymer Templates
P. S. Chinthamanipeta, Q. Lou, D. A. Shipp
ACS Nano 2011, 5, 450-456.
Polyanhydride Networks from Thiol-Ene Polymerizations
B. G. Rutherglen, R. A. McBath, Y. L. Huang, D. A. Shipp
Macromolecules 2010, 43, 10297-10303.
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.
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.