Stephen Swallen

Stephen Swallen

Senior Lecturer
Chemistry

Umhoefer Bldg, A124

stephen.swallen@uwc.edu
(608) 355-5226
Office Hours / Schedule 

Mon-Thu: 11am - 12pm

Publications 

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1.    Stable glasses of indomethacin and alpha,alpha,beta-tris-naphthylbenzene transform into ordinary supercooled liquids, Sepulveda, A.; Swallen, Stephen F.; Kopff, Laura A.; McMahon, RJ, Ediger, MD, J. Chem. Phys. 2012, 137 (20)  Article Number: 204508   DOI: 10.1063/1.4768168

2.    Surface Self-Diffusion of an Organic Glass, Zhu, L.; Brian, C. W.; Swallen, S. F.; Ediger, MD, Phys. Rev. Lett., 2011, 106 (25)  Article Number: 256103   DOI: 10.1103/PhysRevLett.106.256103

3.    Direct Measurement of Molecular Motion in Freestanding Polystyrene Thin Films, Paeng, Keewook; Swallen, Stephen F.; Ediger, M. D., J. Am. Chem. Soc. 2011, 133, (22) 8444-8447   DOI: 10.1021/ja2022834

4.    Temperature-ramping measurement of dye reorientation to probe molecular motion in polymer glasses, Paeng, Keewook; Lee, Hau-Nan; Swallen, Stephen F., Ediger, MD, J. Chem. Phys. 2011, 134 (2) Article Number: 024901   DOI: 10.1063/1.3507255

5.    Swallen, S. F.; Ediger, M. D., Self-diffusion of the amorphous pharmaceutical indomethacin near Tg. Soft Matter, 2011, DOI: 10.1039/C1SM06283B
6.    Zhu, L.; Brian, C. W.; Swallen, S. F.; Straus, P. T.; Ediger, M. D.; Yu, L., Surface self-diffusion of an organic glass. Phys. Rev. Lett 2011, 106, (25), 256103.
7.    Paeng, K.; Swallen, S. F.; Ediger, M. D., Direct measurement of molecular motion in freestanding polystyrene thin films. J. Am. Chem. Soc. 2011, 133, (22), 8444-8447.
8.    Paeng, K.; Lee, H.-N.; Swallen, S. F.; Ediger, M. D., Temperature-ramping measurement of dye reorientation to probe molecular motion in polymer glasses. J. Chem. Phys. 2011, 134, (2), 024901.
9.    Swallen, S. F.; Windsor, K.; McMahon, R. J.; Ediger, M. D.; Mates, T. E., Transformation of stable glasses into supercooled liquids: Growth fronts and anomalously fast liquid diffusion. J. Phys. Chem. B 2010, 114, (8), 2635-2643.
10.    Swallen, S. F.; Traynor, K.; McMahon, R. J.; Ediger, M. D.; Mates, T. E., Self-diffusion of supercooled tris-naphthylbenzene. J. Phys. Chem. B 2009, 113, (14), 4600-4608.
11.    Lee, H.-N.; Paeng, K.; Swallen, S. F.; Ediger, M. D.; Stamm, R. A.; Medvedev, G. A.; Caruthers, J. M., Molecular mobility of poly(methyl methacrylate) glass during uniaxial tensile creep deformation. J. Polym. Sci. B-Polym. Phys. 2009, 47, (17), 1713-1727.
12.    Lee, H.-N.; Paeng, K.; Swallen, S. F.; Ediger, M. D., Direct measurement of molecular mobility in actively deformed polymer glasses. Science 2009, 323, (5911), 231-234.
13.    Kearns, K. L.; Swallen, S. F.; Ediger, M. D.; Sun, Y.; Yu, L., Calorimetric evidence for two distinct molecular packing arrangements in stable glasses of indomethacin. J. Phys. Chem. B 2009, 113, (6), 1579-1586.
14.    Swallen, S. F.; Traynor, K.; McMahon, R. J.; Ediger, M. D.; Mates, T. E., Stable glass transformation to supercooled liquid via surface initiated growth front. Phys. Rev. Lett. 2009, 102, (6), 065503.
15.    Lee, H.-N.; Paeng, K.; Swallen, S. F.; Ediger, M. D., Dye reorientation as a probe of stress-induced mobility in polymer glasses. J. Chem. Phys. 2008, 128, (13), 134902.
16.    Swallen, S. F.; Kearns, K. L.; Satija, S.; Traynor, K.; McMahon, R. J.; Ediger, M. D., Molecular view of the isothermal transformation of a stable glass to a liquid. J. Chem. Phys. 2008, 128, 214514.
17.    Kearns, K. L.; Swallen, S. F.; Ediger, M. D.; Wu, T.; Sun, Y.; Yu, L., Hiking down the energy landscape: Progress toward the kauzmann temperature via vapor deposition. J. Phys. Chem. B 2007, 112, (16), 4934-4932.
18.    Swallen, S. F.; Ediger, M. D. in Extraordinarily stable organic glassers prepared by vapor deposition: Dependence of stability and dynamics upon deposition temperature, IWCS V, Sendai, Japan; Tokuyama, M.; Oppenheim, I., Eds. AIP Press: 2007; AIP Conference Proceedings 982, pp 114-118.
19.    Kearns, K. L.; Swallen, S. F.; Ediger, M. D.; Wu, T.; Yu, L., Influence of substrate temperature on the stability of glasses prepared by vapor deposition. J. Chem. Phys 2007, 127, (15), 154702.
20.    Swallen, S. F.; Kearns, K. L.; Mapes, M. K.; Kim, Y. S.; McMahon, R. J.; Ediger, M. D.; Yu, L.; Satija, S., Organic glasses with exceptional thermodynamic and kinetic stability. Science 2007, 315, 353-356.
21.    Swallen, S. F.; Mapes, M. K.; Kim, Y. S.; McMahon, R. J.; Ediger, M. D.; Satija, S., Neutron reflectivity measurements of the translational motion of tris-naphthylbenzene at the glass transition temperature. J. Chem. Phys. 2006, 124, (18), 184501.
22.    Mapes, M. K.; Swallen, S. F.; Ediger, M. D., Self-diffusion of supercooled o-terphenyl near the glass transition temperature. J. Phys. Chem. B 2006, 110, (1), 507-511.
23.    Mapes, M. K.; Swallen, S. F.; Ediger, M. D., Isothermal desorption measurements of self-diffusion of supercooled o-terphenyl. J. Chem. Phys. 2006, 124, (5), 054710.
24.    Urakawa, O.; Swallen, S. F.; Ediger, M. D.; von Meerwall, E. D., Self-diffusion and viscosity of low molecular weight polystyrene over a wide range of temperature. Macromol. 2004, 37, (4), 1558-64.
25.    Swallen, S. F.; Urakawa, O.; Mapes, M. K.; Ediger, M. D. in Self-diffusion and spatially heterogeneous dynamics in supercooled liquids near tg, IWCS III, Sendai, Japan; Tokuyama, M.; Oppenheim, I., Eds. AIP Press: 2004; AIP Conference Proceedings 708, pp 491-5.
26.    Swallen, S. F.; Bonvallet, P. A.; McMahon, R. J.; Ediger, M. D., Self diffusion of tris-naphthylbenzene near the glass transition temperature. Phys. Rev. Lett. 2003, 90, (1), 015901.
27.    Swallen, S. F.; Zhu, Z. G.; Moore, J. S.; Kopelman, R., Correlated excimer formation and molecular rotational dynamics in phenylacetylene dendrimers. J. Phys. Chem. B 2000, 104, (16), 3988-3995.
28.    Barker, S. L. R.; Clark, H. A.; Swallen, S. F.; Kopelman, R.; Tsang, A. W.; Swanson, J. A., Ratiometric and fluorescence lifetime-based biosensors incorporating cytochrome c ' and the detection of extra- and intracellular macrophage nitric oxide. Analyt. Chem. 1999, 71, (9), 1767-1772.
29.    Swallen, S. F.; Kopelman, R.; Moore, J. S.; Devadoss, C., Dendrimer photoantenna supermolecules: Energetic funnels, exciton hopping and correlated excimer formation. J. Molec. Struct. 1999, 486, 585-597.
30.    Kopelman, R.; Swallen, S. F.; Moore, J. S.; Zhu, Z., Dendrimer photoantenna supermolecules: Energetic funnels, exciton hopping, and unusual excimer formation. Abstr. Amer. Chem. Soc. 1999, 218, U280-U280.
31.    Swallen, S. F.; Shortreed, M. R.; Shi, Z. Y.; Tan, W. H.; Xu, Z. F.; Devadoss, C.; Moore, J. S.; Kopelman, R., Molec. Cryst. Liq. Cryst. 1998, 314, 37-46.
32.    Swallen, S. F.; Shortreed, M. R.; Shi, Z. Y.; Tan, W. H.; Xu, Z. F.; Devadoss, C.; Moore, J. S.; Kopelman, R., Dendrimeric antenna supermolecules with multistep directed energy transfer. in Prasad, P., Ed. Plenum Press: New York, 1998.
33.    Swallen, S. F.; Kopelman, R.; Xu, Z. F.; Moore, J. S. in Proc. Electrochem. Soc., 1998; 98, pp 85-92.
34.    Swallen, S. F.; Shi, Z. Y.; Tan, W. H.; Xu, Z. F.; Moore, J. S.; Kopelman, R., Exciton localization hierarchy and directed energy transfer in conjugated linear aromatic chains and dendrimeric supermolecules. J. Luminesc. 1998, 76-7, 193-196.
35.    Weidemaier, K.; Tavernier, H. L.; Swallen, S. F.; Fayer, M. D., Photoinduced electron transfer and geminate recombination in liquids. J. Phys. Chem. A 1997, 101, (10), 1887-1902.
36.    Shortreed, M. R.; Swallen, S. F.; Shi, Z. Y.; Tan, W. H.; Xu, Z. F.; Devadoss, C.; Moore, J. S.; Kopelman, R., Directed energy transfer funnels in dendrimeric antenna supermolecules. J. Phys. Chem. B 1997, 101, (33), 6318-6322.
37.    Swallen, S. F.; Weidemaier, K.; Fayer, M. D., Solvent structure and hydrodynamic effects in photoinduced electron transfer. J. Chem. Phys. 1996, 104, (8), 2976-2986.
38.    Swallen, S. F.; Weidemaier, K.; Tavernier, H. L.; Fayer, M. D., Experimental and theoretical analysis of photoinduced electron transfer: Including the role of liquid structure. J. Phys. Chem. 1996, 100, (20), 8106-8117.
39.    Swallen, S. F.; Weidemaier, K.; Fayer, M. D., Excluded-volume effects in photoinduced electron-transfer and geminate recombination - analytical theory and simulations. J. Phys. Chem. 1995, 99, (7), 1856-1866.
40.    Swallen, S. F.; Fayer, M. D., Photoinduced electron-transfer and geminate recombination in liquids - analytical theory and monte-carlo simulations. J. Chem. Phys. 1995, 103, (20), 8864-8872.
41.    Song, L.; Swallen, S. F.; Dorfman, R. C.; Weidemaier, K.; Fayer, M. D., Photoinduced electron-transfer and geminate recombination in solution. J. Phys. Chem. 1993, 97, (7), 1374-1382.
42.    Song, L.; Dorfman, R. C.; Swallen, S. F.; Fayer, M. D., Influence of diffusion on photoinduced electron-transfer. J. Phys. Chem. 1991, 95, (9), 3454-3457.
43.    Kang, T. J.; Kahlow, M. A.; Giser, D.; Swallen, S. F.; Nagarajan, V.; Jarzeba, W.; Barbara, P. F., Dynamic solvent effects in the electron-transfer kinetics of s-1 bianthryls. J. Phys. Chem. 1988, 92, (23), 6800-6807.

Education 

BS, Bates College, Chemistry, Physics
PhD, Stanford University, Chemistry