个人简介

B.S., Politechnica University, Romania (1994): Chemistry M.S., Politechnica University, Romania (1995): Chemistry Ph.D., Politechnica University, Romania (1998): Polymer Science Postdoctoral Associate, Carnegie Mellon University (2002 -2003) Advisor: Dr. Krzysztof Matyjaszewski Visiting Assistant Professor, Carnegie Mellon University (2003 -2005) Advisor: Dr. Richard D. McCullough

研究领域

Polymer and Organic Chemistry

My research interests encompass the synthesis and characterization of novel polymeric materials for applications in organic electronics and medicine. The research projects include: Semiconducting polymers for organic photovoltaics Block-copolymers containing semiconducting polymers and liquid crystalline polymers as electronic materials with tunable opto-electronic properties Thermosensitive biocompatible and biodegradable polymers for drug delivery applications

近期论文

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Kapllani, A.; Dillard, C.; Washington, K. E.; Biewer, M. C.; Stefan, Mihaela C. ; Kalra, V., Self-Assembly of Poly(3-Hexylthiophene)-block-Poly(g-Benzyl-L-Glutamate) within Solution-Cast Films and Nanofibers, Macromolecular Materials and Engineering, 2014, DOI: 10.1002/mame.201400148. Gunathilake, S. S.; Huang, P.; Bhatt, M. P.; Stefan, Mihaela C.; Biewer, M. C., Nitrogen containing graphene like structures from pyrolysis of pyrimidine polymers and their application in polymer/grapheme hybrid field effect transistors, RSC Advances, 2014, 4, 41997-42001. Bhatt, M. P.; Du, J.; Rainbolt, A. E.; Pathiranage, T. M. S. K.; Reuther, J. F.; Novak, B. M.; Biewer, M. C.; Stefan, Mihaela C., Semiconducting Liquid Crystalline Block Copolymer Containing Regioregular Poly(3-Hexylthiophene) and Nematic Poly(n-Hexyl Isocyanate), Journal of Materials Chemistry A, 2014, 2, 16148-16156. Holmes, N. P.; Ulum, S.; Sista, P.Burke, K. B.; Wilson, M. G.; Stefan, M. C.; Zhou, X.; Dastoor, P. C.; Belcher, W. J., The Effect of Polymer Molecular Weight on P3HT:PCBM Nanoparticulate Organic Photovoltaic Device Performance, Solar Energy Materials & Solar Cells, 2014, 128, 369-377. Li, Y.; Nese, A.; Hu, X.; Lebedeva, N. V.; LaJoie, T. W.; Burdynska, J.; Stefan, M. C.; You, W.; Yang, W.; Matyjaszewski, K.; Sheiko, S. S., Shifting Electronic Structure by Inherent Tension in Molecular Bottlebrushes with Polythiophene Backbones, ACS Macro Letter, 2014, 3, 738-742. Magurudeniya, H. D.; Kularatne, R. S.; Rainbolt, E. A.; Bhatt,M. P.; Murphy,J. W.; Sheina,E. E.; Gnade,B. E.; Biewer,M. C.; Stefan, M. C., Benzodithiophene Homopolymers Synthesized By Grignard Metathesis (GRIM) and Stille Coupling Polymerizations, Journal of Materials Chemistry A, 2014, 2, 8773-8781. Bhatt, M. P.; Magurudeniya, H. D.; Rainbolt, A. E.; Huang, P.; Dissanayake, D. S.; Biewer, M. C.; Stefan, M. C., Poly(3-hexylthiophene) Nanostructured Materials for Organic Electronics Applications, Journal of Nanoscience and Nanotechnology, 2014, 14, 1-18. Kularatne, R. S.; Taenzler, F. J.; Magurudeniya, H. D.; Du, J.; Murphy, J. W.; Sheina, E. E.; Gnade, B. E.; Biewer, M. C.; Stefan, M. C., Structural Variation of Donor-Acceptor Copolymer Containing Benzodithiophene with Bithienyl Substituents to Achieve High Open Circuit Voltage in Bulk Heterojunction Solar Cells, Journal of Materials Chemistry A, 2013, 1, 15535-15543. Rainbolt, A. E.; Washington, K. E.; Biewer, M. C.; Stefan, M. C., Towards Smart Polymeric Drug Carriers: Self-Assembling g-Substituted Polycaprolactones with Highly Tunable Thermoresponsive Behavior, Journal of Materials Chemistry B, 2013, 1, 6532-6537. Holmes, N. P.; Burke, K. B.; Sista, P.; Barr, M.; Magurudeniya, H. D.; Stefan, M. C.; Kilcoyne, A. L. D.; Zhou, X.; Dastoor, P. C.; Belcher, W. J., Nano-Domain Behaviour in P3HT:PCBM Nanoparticles, Relating Material Properties to Morphological Changes, Solar Energy Materials & Solar Cells, 2013, 117, 437-445. Bhatt, M.; Magurudeniya, H.; Sista, P.; Jeffries-EL, M.; Sheina, E.E.; Janesko, B. J.; McCullough, R. D.; Stefan, M. C., Mechanistic Study of Transition Metal (Ni, Pd, Pt)-Mediated Grignard Metathesis (GRIM) Polymerization, Journal of Materials Chemistry A, 2013, 1, 12841-12849. Zhao, L.; Feng, C.; Pang, X.; Jung, J.; Stefan, M. C., Sista, P.; Han, R.; Fang, N., Lin, Z., Self-Assembly of Hydrophobic Conjugated Triblock Copolymer with High Photoluminescence via Dewetting at the Air/Water Interface, Soft Matter, 2013, 9, 8050-8056. Hao, J.; Cheng, Y.; Ratanatuga, U. R. J. K.; Senevirathne, S.; Biewer, M. C.; Nielsen, S. O.; Wang, Q.; Stefan, M. C., A Combined Experimental and Computational Study of the Substituent Effect on Micellar Behavior of g-Substituted Thermoresponsive Amphiphilic Poly(e-Caprolactone)s, Macromolecules, 2013, 46, 4829-4838. Gunathilake, S. S.; Magurudeniya, H. D.; Huang, P.; Nguyen, H.; Rainbolt, E. A.; Stefan, M. C., Synthesis and Characterization of Novel Semiconducting Polymers Containing Pyrimidine, Polymer Chemistry, 2013, 4, 5216-5219. Sista, P.; Wilson, M.; Holmes, N.; Kularatne, R. S.; Rainbolt, A. E.; Biewer, M. C.; Dastoor, P. C.; Belcher, W., Stefan, M. C., Non-Dependence of Benzodithiophene Donor Polymer to PCBM Ratio on the Performance of Bulk Heterojunction Solar Cells, Science of Advanced Materials, 2013, 5, 512-518. Hao, J.; Rainbolt, E. A.; Washington, K., Biewer, M. C., Stefan, M. C., Functional Polycaprolactones for Micellar Drug Delivery, Current Organic Chemistry, 2013, 17, 930-942. Sista, P.; Kularatne, R. S.; Mulholland, M. E.; Wilson, M.; Holmes, N.; Zhou, X.; Dastoor, P. C.; Belcher, W.; Rasmussen, S. C.; Biewer, M. C.; Stefan, M. C., Synthesis and Photovoltaic Performance of Donor-Acceptor Polymers Containing Benzo[1,2-b:4,5-b']dithiophene with Thienyl Substituents, Journal of Polymer Science, Part A, 2013, 51, 2622-2630. Elkassih, S. A.; Sista, P.; Magurudeniya, H. D.; Papadimitratos, A.; Zakhidov, A. A.; Biewer, M. C.; Stefan, M. C., Phenothiazine Semiconducting Polymers for Light-Emitting Diodes, Macromolecular Chemistry and Physics, 2012, 214, 572-577. Kularatne, R. K.; Magurudenyia, H.; Sista, P.; Biewer, M. C.; Stefan, M. C., Donor-Acceptor Semiconducting Polymers for Organic Solar Cells, Journal of Polymer Science, Part A, 2013, 51, 743-768. Nguyen, H. Q.; Bhatt, M. P.; Rainbolt, E. A., Stefan, M. C., Synthesis and Characterization of Polyisoprene-b-Polystyrene-b-Poly(3-Hexylthiophene) Triblock Copolymer, Polymer Chemistry, 2013, 4, 462-465.