Dept. of Chemistry

Dvora Perahia

Picture of Dvora Perahia Professor
Physical Chemistry

Phone: (864) 656-7703
Office: 267 Hunter Laboratories
E-mail: dperahi@clemson.edu

Research Interests | Publications | Research Group

Dr. Perahia received her B.Sc. (1981) at the Hebrew University in Israel and her M.Sc. (1984) and Ph.D. (1991) in Physical Chemistry from the Weizmann Institute of Science in Israel. Following her Ph.D., she spent a year at the Polymer Department at the Weizmann Institute in the group of Prof. J. Klein where they developed innovative surface force apparatus that is capable of measuring shear forces to very high accuracy, aimed at studying polymers at interfaces. Dr. Perahia joined the physics group at Exxon Research and Engineering laboratory in New Jersey (1991-1994) where she used X-ray and neutron scattering to study polymers at interfaces. Dr. Perahia spent additional year (1995-1996) at the physics department of Princeton University before joining the Chemistry Department at Clemson University in 1997. Dr. Perahia is also a member of the Material Research Program at Clemson University and the Center of Advanced Engineering Fibers and Films.

Research Interests

The focus of Dr. Perahia¹s research is the study of polymers and complex fluids. A physical chemistry approach is applied to study the structure and dynamics of polymers and different complex fluids. Polymers with different properties are studied, including:
1)polyelectrolytes, 2) semifluoro polymeric liquid crystals, 3)conducting polymers, 4) rodlike highly conjugated polymers, and 5) onodispersed di-block and tri-block co-polymers.

The technological significance of the interfacial behavior of polymers lies in their multiple uses, such as surface modifiers, lubricants and adhesives. They are also used as coatings with well-defined electro optical and mechanical properties. The polymer physics group led by Dr. Perahia uses scattering techniques, including X-ray and neutron scattering, as well as surface probes techniques, such as atomic force microscopy, to study these systems. Further instrumentation development is conducted to probe specific systems.

example one

[Top]

Publications

Perahia, Dvora; Aryal, Dipal; Grest, Gary S. From a single molecule to a membrane of structured ionic polymers: a molecular dynamics simulation study Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) (2012), 53(2), 81-82.

Dvora Perahia , Dilru R. Ratnaweera, Umesh M. Shrestha, Scott T. Iacono, Dennis W. Smith, Joseph Mabry, Jaroslaw Majewski Semi-Fluorinated Polymer/POSS Thin Films Nanocomposites: Response to Water. Advances in Fluorine-Containing Polymers Chapter 6, pp 81–93 ACS Symposium Series, Vol. 1106 August 16, 2012

Ratnaweera DR, Shrestha UM, Osti N, Kuo CM, Clarson S, Littrell K, & Perahia D (2012) Self-assembly of a semi-fluorinated diblock copolymer in a selective solvent. Soft Matter 8(7):2176-2184.

Pierce, F.; Perahia, D.; Grest, G. S., Dynamics of polymers across an interface. Epl 2011, 95 (4).

Maskey, S.; Pierce, F.; Perahia, D.; Grest, G. S., Conformational study of a single molecule of poly para phenylene ethynylenes in dilute solutions. Journal of Chemical Physics 2011, 134 (24).

Tennyson, E. G.; He, S.; Osti, N. C.; Perahia, D.; Smith, R. C., Luminescent phosphonium polyelectrolyte prepared from a diphosphine chromophore: synthesis, photophysics, and layer-by-layer assembly. Journal of Materials Chemistry 2010, 20 (37), 7984-7989.

Traiphol, R.; Charoenthai, N.; Srikhirin, T.; Perahia, D., Self-assembling into interconnected nanoribbons in thin films of hairy rod poly(9,9-di(2-ethylhexyl)fluorene): Effects of concentration, substrate and solvent. Synthetic Metals 2010, 160 (11-12), 1318-1324.

He, L. L.; Fujimoto, C. H.; Cornelius, C. J.; Perahia, D., From Solutions to Membranes: Structure Studies of Sulfonated Polyphenylene Ionomers. Macromolecules 2009, 42 (18), 7084-7090.

He, L. L.; Smith, H. L.; Majewski, J.; Fujimoto, C. H.; Cornelius, C. J.; Perahia, D., Interfacial Effects on Water Penetration into Ultrathin Ionomer Films: An in Situ Study Using Neutron Reflectometry. Macromolecules 2009, 42 (15), 5745-5751.

Pierce, F.; Perahia, D.; Grest, G. S., Interdiffusion of Short Chain Oligomers into an Entangled Polymer Film. Macromolecules 2009, 42 (20), 7969-7973.

Pierce, F.; Perahia, D.; Grest, G. S., Spreading of liquid droplets on permeable polymeric surfaces. Epl 2009, 86 (6).

Pierce, F.; Tsige, M.; Borodin, O.; Perahia, D.; Grest, G. S., Interfacial properties of semifluorinated alkane diblock copolymers. Journal of Chemical Physics 2008, 128 (21).

Pierce, F.; Tsige, M.; Perahia, D.; Grest, G. S., Liquid-Liquid Interfaces of Semifluorinated Alkane Diblock Copolymers with Water, Alkanes, and Perfluorinated Alkanes. Journal of Physical Chemistry B 2008, 112 (50), 16012-16020.

Traiphol, R., H. Shah, D.W. Smith, and D. Perahia, Bulk and interfacial studies of a new and versatile semifluorinated lyotropic liquid crystalline polymer. Macromolecules, 2001. 34(12): p. 3954-3961.

Perahia, D., R. Traiphol, and U.H.F. Bunz, From molecules to supramolecular structure: Self assembling of wirelike poly(p-phenyleneethynylene)s. Macromolecules, 2001. 34(2): p. 151-155.

Smith, D.W., H.W. Boone, R. Traiphol, H. Shah, and D. Perahia, Perfluorocyclobutyl liquid crystalline fluoropolymers. Synthesis and thermal cyclopolymerization of bis(trifluorovinyloxy)-alpha-methylstilbene. Macromolecules, 2000. 33(4): p. 1126-1128.

Smith, D.W., D.A. Babb, H.V. Shah, A. Hoeglund, R. Traiphol, D. Perahia, H.W. Boone, C. Langhoff, and M. Radler, Perfluorocyclobutane (PFCB) polyaryl ethers: versatile coatings materials. Journal of Fluorine Chemistry, 2000. 104(1): p. 109-117.

[Top]


Created by MATRF; Maintained by Christine Dinger

Copyright ©2007 Clemson University, Clemson, S.C. 29634, (864) 656-3311