Andrew E. Feiring
Adjunct Professor of Chemistry

Overview

Organic and Polymer Chemistry

Research

Primary interests are the synthesis, properties and applications of organofluorine compounds and fluoropolymers. This includes improving syntheses of existing fluorinated monomers and polymers and developing new structures for applications in electronics, optics, membranes separations and surface treatment. A key issue is understanding the structure/property relationships in fluorinated polymers and using this understanding to design new structures with minimum fluorine content while retaining their unique surface and bulk properties. The unusual reactivity of organofluorine compounds is used to construct novel monomers and modern polymerization methods, including controlled free radical and microemulsion polymerizations, are used to generate new polymer structures.

Chairman (1991), Program-Chairman (1990), and Secretary-Treasurer (1988-1989) Division of Fluorine Chemistry of the American Chemical Society. 

 

Elected Fellow of American Association for Advancement of Science (1991).

 

Inventor on 67 issued US patents.

Education

  • 1969 B.S. Chemistry, Georgetown University
  • 1973 Ph.D. Organic Chemistry, Brown University
  • 1972 – 1974 Postdoctoral Fellow, Columbia University
  • 1974 – 2006 Research Scientist, DuPont Central Research & Development

Selected Publications

Chemistry in Hydrogen Fluoride. VII. A Novel Synthesis of Aryl Trifluoromethyl Ethers", Feiring, A. E. J. Org. Chem. 1979, 44, 2907

 

Perfluoroalkylation of the 2-Nitropropyl Anion. Evidence for an Srn1 Process", Feiring, A. E. J. Org. Chem. 1983, 48, 347.

 

Fluorinated Polyether Sulfones", Feiring, A. E.; Wonchoba, E. R.; Arthur, S. D. J. Polym. Sci., Polym. Chem. Ed., 1990, 28, 2809.

 

Semifluorinated Polymers. 1. Synthesis and Characterization of Side Chain Liquid Crystalline Polymers Containing Semifluorinated Oligooxyethylene Based Flexible Spacers", Percec, V.; Tomazos, D.; Feiring, A. E. Polymer, 1991, 32, 1897.

 

Photochemical Modification of a Fluoropolymer Surface", Allmer, K.; Feiring, A. E. Macromolecules 1991, 24, 5487

 

Addition of Phenols to Perfluorovinyl Ethers. Protonation and Halogenation of Carbanionic Intermediates", Feiring, A. E.; Wonchoba, E. R. J. Org. Chem. 1992, 57, 7014.

 

Synthesis and Properties of Fluorinated Polyimides from Novel 2,2'-Bis(fluoroalkoxy)-benzidines", Feiring, A. E.; Auman, B. C.; Wonchoba, E. R. Macromolecules 1993, 26, 2779.

 

New Ring-Containing Fluoropolymers", Yang, Z.-Y.; Feiring, A. E.; Smart, B. E. J. Am. Chem. Soc. 1994, 116, 4135.

 

Synthesis of New Fluoropolymers: Tailoring Macromolecular Properties with Fluorinated Substitutents", Feiring, A. E. J. Macromol. Sci., Pure Appl. Chem. 1994, A31, 1657.

 

Solubilization of Regioregular and Regioirregular Poly(p-phenylene)s via CF3 and OCF3 Substituents To Generate a Model for Rigid-Rod Polymers", Grob, M.; Feiring, A. E.; Auman, B. C.; Percec, V.; Zhao, M.; Dale, H. Macromolecules 1996, 29, 7284.

 

Synthesis of Soluble Fluorinated Vinyl Ether Copolymers by Ionic Addition of Fluoroolefins to Poly(vinyl alcohol)", Feiring, A. E.; Wonchoba, E. R. Macromolecules 1998, 31, 7103.

 

Fluorocarbon-Ended Polymers: Metal Catalyzed Radical and Living Radical Polymerizations Initiated by Perfluoroalkylsulfonyl Halides" Feiring, A. E.; Wonchoba, E. R.; Davidson, F.; Percec, V.; Barboiu, B. J. Polym. Sci., Polym. Chem. Ed. 2000, 38, 3313.

 

Novel Aromatic Polymers with Pendant Lithium Perfluoroalkylsulfonate or Sulfonimide Groups", Feiring, A. E.; Choi, S. K.; Doyle, M.; Wonchoba, E. R. Macromolecules 2000, 33, 9262

 

Amorphous Fluoropolymers from Tetrafluoroethylene and Bulky Vinyl Esters or Vinyl Ethers”, Feiring, A. E.; Wonchoba, E. R.; Fischel, B. E.; Thieu, T. V.; Nassirpour, M. R. J. Fluorine Chem. 2002, 118, 95

 

Bis(fluoroalcohol) Monomers and Polymers: Improved Transparency Fluoropolymer Photoresists for Semiconductor Photolithography at 157 nm”, Feiring, A. E., Crawford, M. K.; Farnham, W. B.; French, R. H.; Leffew, K. W.; Petrov, V. A.; Schadt III, Tran, H. V.; Zumsteg, F. C. Macromolecules, 2006, 39, 1443

 

New Amorphous Fluoropolymers of Tetrafluoroethylene with Fluorinated and Non-Fluorinated Tricyclononenes. Semiconductor Photoresists for Imaging at 157 and 193 nm”, Feiring, A. E.; Crawford, M. K.; Farnham, W. B.; Feldman, J.; French, R. H.; Junk, C. P.; Leffew, K. W.; Petrov, V. A.; Qiu, W.; Schadt III, F. L.; Tran, H. V.; Zumsteg, F. C. Macromolecules, 2006, 39, 3252

 

Disassembly via an Environmentally Friendly and Efficient Fluorous Phase Constructed with Dendritic Architecture, Wilson, C. J.; Wilson, D. A.; Feiring, A. E.; Percec, V. J. Polym. Sci. A, Polym. Chem. 2010, 48, 2498

Office Location

4240 IAST

Phone

215-573-7888

Department of Chemistry

231 S. 34 Street, Philadelphia, PA 19104-6323

215.898.8317 voice | 215.573.2112 fax | web@chem.upenn.edu