Timothy P. Lodge

Timothy P. Lodge
Born April 1954
Manchester, England
Citizenship United States
Fields Chemistry, Polymer Science
Institutions University of Minnesota
Alma mater Harvard University
University of Wisconsin–Madison
Doctoral advisor John Schrag
Known for Advances in polymer chain dynamics; block copolymer self-assembly; polymer education
Notable awards Regents Professorship (2013 - Present), APS Polymer Physics Prize (2004)

Timothy P. Lodge (born April 1954) is an American chemist.

Lodge is a Regents Professor (2013-present),[1] an Institute of Technology Distinguished Professor (2004-present), and a Distinguished McKnight University Professor (2001-present)[2] in the Department of Chemistry and the Department of Chemical Engineering and Materials Science at the University of Minnesota, twin cities, Minneapolis-Saint Paul, Minnesota where he has been a faculty member since 1982. He is the Editor-in-Chief of the American Chemical Society journals Macromolecules (2001-present), and is the founding editor of ACS (American Chemical Society) Macro Letters (2011-present).[1]

He is recognized for his research in polymer science, especially fundamental explorations of polymer chain dynamics in miscible blends, block polymers, multicompartment micelles and polymers in ionic liquids. According to Web of Science, he has produced 331 published works that have been cited over 12,400 times, with an h-index of 62 as of April 6, 2014. He is also co-author, with Paul Hiemenz, of the textbook, Polymer Chemistry, 2nd edition.[1]

Background and personal life

Timothy P. Lodge was born in Manchester, England, a son of Helen and Arthur S. Lodge. He moved permanently to the United States in 1968. He received his A. B. degree in applied mathematics from Harvard University in 1975.[3] Working under the mentorship of Professor John Schrag at the University of Wisconsin, Madison, Lodge received his Ph. D. in chemistry in 1980.[3] His dissertation was titled, “Oscillatory Flow Birefringence of Dilute Polymer Solutions: Concentration Dependence and High Frequency Behavior.” Upon graduation, Lodge collaborated with Dr. Charles Han as a National Research Council Postdoctoral Associate at the National Bureau of Standards (now the National Institute of Standards and Technology).[1] Lodge and his wife have two children.

Contributions to polymer science

Lodge is internationally recognized for his seminal contributions in numerous areas of polymer science.[1] The focus of his work has been on achieving a molecular-level understanding of polymer structure and dynamics in multicomponent systems and mixtures, and to understand how these are affected by the thermodynamic interactions amongst the components.

Polymer chain dynamics: Lodge's early work focused on the chain dynamics of polymers in solution and in miscible blends. In particular, Lodge and McLeish (2000) discussed the effect of local composition on the dynamics of polymers in a miscible blend.[4] Their model was based on two simple assumptions. First, that dynamic heterogeneity occurs over a length scale on the order of a Kuhn length of the chain. Second, that each polymer in the blend experiences a ‘self-concentration’ that is higher than the bulk (average) composition, due to chain connectivity over this length scale. The impact is that the local dynamics of the two polymers in the blend may exhibit different dependencies on temperature and overall composition due to differences in local composition. This leads to a breakdown in time-temperature superposition,[5] and the appearance of two distinct glass transition temperatures in the mixture.[6][7]

Block copolymer solutions: Lodge's research group has maintained long-standing interest in the self-assembly of block copolymers in solutions. Studying the phase behavior of polystyrene-block-polyisoprene in solvents of varying selectivity, the concept of phase trajectories was introduced to explain the phase sequences observed as a function of concentration in neutral and selective solvents connecting the solution behavior to that seen in block copolymer melts.[7][8][9] From this foundation, the thermodynamics and kinetics of polymorphic order-order transitions were investigated.[10][11][12][13][14] One paper of note demonstrated the thermoreversible, epitaxial face-centered cubic to body-centered cubic transition in highly ordered, micellar block copolymer solutions and its similarity to transitions observed in atomic systems (e.g. metals and alloys) supporting the general nature of the occurrence of this phase transition in materials.[15]

Miktoarm Star Polymers: In 2004, Lodge published the seminal paper on the self-assembly of miktoarm star terpolymers in solution;[16] a paper that has been cited over 450 times.[1] Using ABC miktoarm star polymers the first example of multicomponent block copolymer micelles was shown, driven by the mutual incompatibility of the hydrophilic A and hydrophobic B and C blocks.[17] In a subsequent paper the simultaneous, segregated storage of two different chromophores in the different micelle domains was demonstrated, offering potential for use in chemical delivery in fields such as pharmaceuticals, personal care products, and foodstuffs.[18]

Polymers in Ionic Liquids: Lodge's recent work has focused on the self-assembly of block copolymers in ionic liquids.[19][20] Ionic liquids are considered by many to be “green” solvents due to their vanishing vapor pressure, fire resistance, as well as their excellent chemical and thermal stability over wide temperature ranges. Besides elucidating the assembly properties of block copolymers in ionic liquids, Lodge has used these materials to produce molecular shuttles [21] and ion gel gate dielectrics for use in polymer thin film transistors.[22][23][24][25]

Education in Polymer Science: Lodge is a co-author of Polymer Chemistry, 2nd Edition, written with Paul Hiemenz (2007). In 2012 he was elected to the University of Minnesota Academy of Distinguished Teachers, and he received the Postbaccalaureate, Graduate, and Professional Education Award.

Lodge is the co-holder of four patents.[26]

Awards, honors, and professional service

For his research and education efforts, Lodge has received numerous awards including:

Lodge has been a Visiting Professor at the University of California, Santa Barbara (1991-2, Chemical Engineering), University of Mainz, Germany (1998, Institute for Physical Chemistry) and Kyoto University (1985; 1992; 1994, Department of Polymer Chemistry)

Since 2005, Lodge has been the director of the NSF-funded Materials Research Science and Engineering Center at Minnesota.[38] The Center currently focuses on materials development in: (1) Engineered Multiblock Polymers, (2) Organic Optoelectronic Interfaces, (3) Magnetic Heterostructures, and (4) Nanoparticle-based Materials.

Lodge has served the broader scientific community as the Editor-in-Chief for the American Chemical Society journals Macromolecules and ACS Macro Letters. He has served as Chair Elect, Vice Chair, Chair (1995-1998) and Councilor (2001-2006) for the American Physical Society Division of Polymer Physics.[1]

References

  1. 1 2 3 4 5 6 7 "Department of Chemistry". Chem.umn.edu. 2013-06-14. Retrieved 2015-03-10.
  2. ↑ "University of Minnesota: Scholars Walk". Scholarswalk.umn.edu. 2015-01-23. Retrieved 2015-03-10.
  3. 1 2 "Chemistry Faculty Profile Timothy P. Lodge". University of Minnesota. Retrieved 7 November 2015.
  4. ↑ Lodge, T. P.; McLeish, T. C. B.: Self-Concentrations and Effective Glass Transition Temperatures in Polymer Blends. Macromolecules 2000, 33, 5278-5284.
  5. ↑ Haley, J. C.; Lodge, T. P.: Failure of time-temperature superposition in dilute miscible polymer blends. Colloid and Polymer Science 2004, 282, 793-801.
  6. ↑ Savin, D. A.; Larson, A. M.; Lodge, T. P.: Effect of Composition on the Width of the Calorimetric Glass Transition in Polymer-Solvent and Solvent-Solvent Mixtures. Journal of Polymer Science, Part B: Polymer Physics 2004, 42, 1155-1163.
  7. 1 2 Hanley, K. J.; Lodge, T. P.: Effect of dilution on a block copolymer in the complex phase window. Journal of Polymer Science, Part B: Polymer Physics 1998, 36, 3101-3113.
  8. ↑ Hanley, K. J.; Lodge, T. P.; Huang, C.-I.: Phase behavior of a block copolymer in solvents of varying selectivity. Macromolecules 2000, 33, 5918-5931.
  9. ↑ Lodge, T. P.; Pudil, B.; Hanley, K. J.: The Full Phase Behavior for Block copolymers in Solvents of Varying Selectivity. Macromolecules 2002, 35, 4707-4717.
  10. ↑ Bang, J.; Lodge, T. P.: Mechanisms and epitaxial relationships between close-packed and bcc lattices in block copolymer solutions. J. Phys. Chem. B 2003, 107, 12071-12081.
  11. ↑ Lodge, T. P.; Bang, J.; Park, M. J.; Char, K.: Origin of the thermoreversible fcc-bcc transition in block copolymer solutions. Phys. Rev. Lett. 2004, 92, 145501/1-145501/4.
  12. ↑ Park, M. J.; Bang, J.; Harada, T.; Char, K.; Lodge, T. P.: Epitaxial transitions among FCC, HCP, BCC, and cylinder phases in a block copolymer solution. Macromolecules 2004, 37, 9064-9075.
  13. ↑ Park, M. J.; Char, K.; Bang, J.; Lodge, T. P.: Interplay between Cubic and Hexagonal Phases in Block Copolymer Solutions. Langmuir 2005, 21, 1403-1411.
  14. ↑ Wang, C.-Y.; Lodge, T. P.: Kinetics and Mechanisms for the Cylinder-to-Gyroid Transition in a Block Copolymer Solution. Macromolecules 2002, 35, 6997-7006.
  15. ↑ Bang, J.; Lodge, T. P.; Wang, X.; Brinker, K. L.; Burghardt, W. R.: Thermoreversible, epitaxial fcc. to bcc. transitions in block copolymer solutions. Phys. Rev. Lett. 2002, 89, 215505/1-215505/4.
  16. ↑ Li, Z.; Kesselman, E.; Talmon, Y.; Hillmyer, M. A.; Lodge, T. P.: Multicompartment micelles from ABC miktoarm stars in water. Science 2004, 306, 98-101.
  17. ↑ Li, Z.; Hillmyer, M. A.; Lodge, T. P.: Morphologies of Multicompartment Micelles Formed by ABC Miktoarm Star Terpolymers. Langmuir 2006, 22, 9409-9417.
  18. ↑ Lodge, T. P.; Rasdal, A.; Li, Z.; Hillmyer, M. A.: Simultaneous, Segregated Storage of Two Agents in a Multicompartment Micelle. J. Am. Chem. Soc. 2005, 127, 17608-17609.
  19. ↑ Lodge, T. P.: A Unique Platform for Materials Design. Science 2008, 321, 50-51.
  20. ↑ He, Y.; Li, Z.; Simone, P.; Lodge, T. P.: Self-assembly of block copolymer micelles in an ionic liquid. Journal of the American Chemical Society 2006, 128, 2745-2750.
  21. ↑ He, Y.; Lodge, T. P.: The micellar shuttle: Thermoreversible, intact transfer of block copolymer micelles between an ionic liquid and water. Journal of the American Chemical Society 2006, 128, 12666-12667.
  22. ↑ Cho, J. H.; Lee, J.; He, Y.; Kim, B.; Lodge, T. P.; Frisbie, C. D.: High-capacitance ion gel gate dielectrics with faster polarization response times for organic thin film transistors. Advanced Materials 2008, 20, 686-690.
  23. ↑ Cho, J. H.; Lee, J.; Xia, Y.; Kim, B.; He, Y.; Renn, M. J.; Lodge, T. P.; Frisbie, C. D.: Printable ion-gel gate dielectrics for low-voltage polymer thin-film transistors on plastic. Nature Materials 2008, 7, 900-906.
  24. ↑ Lee, J.; Panzer, M. J.; He, Y.; Lodge, T. P.; Frisbie, C. D.: Ion gel gated polymer thin-film transistors. Journal of the American Chemical Society 2007, 129, 4532-4533.
  25. ↑ He, Y.; Boswell, P. G.; Bühlmann, P.; Lodge, T. P.: Ion gels by self-assembly of a triblock copolymer in an ionic liquid. Journal of Physical Chemistry B 2007, 111, 4645-4652.
  26. ↑ "Patents by Inventor Timothy P. Lodge". Justia. Retrieved 7 November 2015.
  27. 1 2 3 4 5 6 "Tim Lodge Regents Professor". Regents of the University of Minnesota. Retrieved 7 November 2015.
  28. ↑ "APS Fellow Archive". Aps.org. 2013-04-16. Retrieved 2015-03-10.
  29. ↑ "Arthur K. Dolittle Award - Polymeric Materials: Science and Engineering Division". Pmse.sites.acs.org. Retrieved 2015-03-10.
  30. ↑ "Prize Recipient". Aps.org. 2013-04-16. Retrieved 2015-03-10.
  31. ↑ "Chemistry International - Newsmagazine for IUPAC". Iupac.org. Retrieved 2015-03-10.
  32. ↑ "Editor Profile ACS Publications". ACS Publications. Retrieved 7 November 2015.
  33. ↑ "Fellows | AAAS MemberCentral". Membercentral.aaas.org. Retrieved 2015-03-10.
  34. ↑ "American Chemical Society". Webapps.acs.org. Retrieved 2015-03-10.
  35. ↑ "2010 ACS Fellows | August 2, 2010 Issue - Vol. 88 Issue 31 | Chemical & Engineering News". Cen.acs.org. 2010-08-02. Retrieved 2015-03-10.
  36. ↑ "Membership of the Academy of Distinguished Teachers" (PDF). Adt.umn.edu. Retrieved 2015-03-10.
  37. ↑ "2015 Herman F. Mark Award Winner: Timothy P. Lodge". American Chemical Society. Retrieved 7 November 2015.
  38. ↑ "Lodge to lead Materials Research Science and Engineering Center (MRSEC) : College of Science & Engineering : University of Minnesota, Twin Cities". Cse.umn.edu. Retrieved 2015-03-10.

External links

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