My wife and I have two wonderful children, (14 and 16 yrs old), and we enjoy traveling, hiking and playing and/or watching sports together (hockey in particular). Other interests include cooking, reading and supporting local schools through the Potsdam Educational Opportunities Fund.
The University of Melbourne
The University of Melbourne
- Synthesis of polymers via radical and ionic polymerization
- Polymerization kinetics, controlled and living polymerizations
- Biomaterials; hydrogels; novel soft contact lens materials
- Synthesis and study of polymer–layered silicate nanocomposites
- Synthesis of block copolymers, polymer brushes, polymers attached to surfaces and particles
- Biodegradable network polymers for bone repair and drug delivery
- Synthesis and study of photon harvesting polymers, energy transfer in macromolecular systems
- Novel polymer-inorganic composites for photovoltaic applications (solar cells)
- Nano- and micro-particle surface modification, layer-by-layer approach to surface modification
My research group develops new polymer chemistries and materials that have potential in many applications, including various nanotechnologies and biomedical materials, and in areas that require polymers with high degrees of chemical and physical specificity. With wide-ranging capabilities in polymer chemistry, we have led the development of various novel materials, including synthetic (co-) polymers, nanoparticles, gels and nanocomposites.
In particular, there are three areas on which we are presently focused. The first is novel methods of synthesizing degradable polymer networks. We discovered that thiol-ene polymerizations are suitable for the synthesis of polyanhydrides, which can be made into promising surface-eroding materials and into polymer nanoparticles. These polymers have significant potential as drug delivery vehicles, within reconfigurable shape memory elastomer composites (SMECs), and self-healing polymers (SHPs). Second, we are also developing new methods for polymer particle synthesis based on water-borne thiol-ene/thiol-yne polymerization. These polymerizations leverage multiple “click” chemistry attributes so that colloidal particles can be made quickly and efficiently, with stoichiometric-controlled chemical functionality, uniform cross linking, and using an environmentally-benign 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. Lastly, we use our significant expertise in new radical polymerization methods, such as atom transfer radical polymerization (ATRP) and reversible addition-fragmentation chain transfer (RAFT) polymerization, to create polymers that exhibit novel and potentially highly useful thermal and mechanical properties. These have potential applications as shape memory polymers, adaptive nanocomposites, and surface-active agents (“surfactants”) that may be used in a variety of biomedical applications, such as drug delivery vehicles or contact lens care.
Awards & Distinctions
Fulbright Scholar,Ljubljana University & National Institute of Chemistry, Slovenia (January - July 2015)
Clarkson University Student Association Outstanding Teacher Award 2000-2001
Coating Solutions Comprising Segmented Interactive Block Copolymers, J. G. Linhardt, D. A. Shipp, J. F. Kunzler, D. P. Vanderbilt, Assignee: Bausch and Lomb, Inc., US Patent # 8,100,528, January 24, 2012
Biomedical Devices, J. G. Linhardt, J. F. Kunzler, D. A. Shipp, Assignee: Bausch and Lomb, Inc., US Patent # 8,083,348, December 27, 2011
Biomedical Devices, J. G. Linhardt, I. M. Nunez, J. A. McGee, J. Hunt, M. Alton, D. Pavlovic, D. A. Shipp, Assignee: Bausch and Lomb, Inc., US Patent # 8,043,369, October 25, 2011
Coating Solutions Comprising Segmented Reactive Block Copolymers, J. G. Linhardt, D. A. Shipp, J. F. Kunzler, Assignee: Bausch and Lomb, Inc., US Patent # 7,942,929, May 17, 20
Radical-Mediated Thiol-Ene Emulsion Polymerization
O. Z. Durham, D. V. Chapman, S. Krishnan, D. A. Shipp
Macromolecules, 2017, accepted
Polyanhydride Nanoparticles: Thiol-Ene ‘Click’ Polymerizations Provide Functionalized and Crosslinkable Nanoparticles with Tunable Degradation Times
O. Z. Durham, K. L. Poetz, D. A. Shipp
Aust. J. Chem., 2017, accepted. DOI: http://dx.doi.org/10.1071/CH16543
Polyanhydrides: Synthesis, Properties and Applications (Review)
K. L. Poetz, D. A. Shipp
Aust. J. Chem., 2016, 69, in press.
Radical Mediated Thiol-Ene/Yne Dispersion Polymerizations
F. Alimohammadi, C. Wang, O. Z. Durham, H. R. Norton, C. N. Bowman, D. A. Shipp
Polymer, 2016, 105, 180-186.
Anhydride-Based Reconfigurable Shape Memory Elastomers
M. I. Lawton, K. R. Tillman, H. S. Mohammed, W. Kuang, D. A. Shipp, P. T. Mather
ACS Macro. Lett., 2016, 5, 203-207.
Quantitative and Qualitative Toxicological Evaluation of Thiol-Ene “Click” Chemistry-Based Polyanhydrides and Their Degradation Products
H. S. Mohammed, B. L. Snyder, D. S. K. Samways, D. A. Shipp
J. Biomed. Mater. Res. Part A, 2016, 104A, 1936-1945.
Functional Polymer Particles via Thiol-Ene and Thiol-Yne Suspension “Click” Polymerization
O. Z. Durham, H. R. Norton, D. A. Shipp
RSC Adv. 2015, 5, 66757-66766.
Polyanhydride Nanoparticles by ‘Click’ Thiol-Ene Polymerization
K. L. Poetz, O. Z. Durham, D. A. Shipp
Polym. Chem., 2015, 6, 5464-5469.
Suspension “Click” Polymerizations: Thiol-Ene Polymer Particles Prepared with Natural Gum Stabilizers
O. Z. Durham, D. A. Shipp
Colloid Polym. Sci., 2015, 293, 2385-2394.
Surface Eroding, Semicrystalline Polyanhydrides via Thiol-Ene “Click” Photopolymerization
K. L. Poetz, H. S. Mohammed, D. A. Shipp
Biomacromolecules, 2015, 16, 1650-1659.
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, 17, 13215-13222.
Benzotriazole as a Passivating Agent During Chemical Mechanical Planarization of Ni-P Alloy Substrates
Y. Mu, M. Zhong, K. J. Rushing, Y. Li, D. A. Shipp
Appl. Surf. Sci., 2014, 315, 190-195.
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.