个人简介

Professor Allen received her B.S. degree in Chemistry in 1993 and Ph.D. in Physical Chemistry in 1997 at the University of California Irvine. Her advisors as an undergraduate, graduate, and postgraduate were Nobel Laureate F. S. Rowland, D. Blake, J. C. Hemminger, B. J. Finlayson-Pitts, and G. L. Richmond respectively. As a student and postdoctoral researcher she was awarded several fellowships including Fannie and John Hertz, EPA, an NSF Traineeship, and a NOAA Post-Doctoral Fellowship in Climate and Global Change. At Ohio State she has been recognized for her research accomplishments with a Research Innovation Award from Research Corp. in 2001, an NSF CAREER Award in 2002, a Beckman Young Investigator Award in 2003, an Alfred P. Sloan Research Fellow Award in 2005, a Camille Dreyfus Teacher-Scholar Award in 2006, and a Fellow of the American Association for the Advancement of Science (AAAS) in 2012. Dr. Allen has also been recognized for several mentoring awards over the years including the most recent in 2013, the American Chemical Society National Award for Encouraging Women into Careers in the Chemical Sciences. She is a Full Professor in the Department of Chemistry and Biochemistry and in the Department of Pathology, and her research specialization is in molecular organization at interfaces.

研究领域

Physical/Analytical/Biochemistry/Chemical Physics/Environmental

Molecular Organization at Interfaces: Atmospheric Aerosols - Air/Water Interfaces, Geochemical Interfaces, Biophysics of Lung Surfactant and Model Biomembranes, and Nonlinear-Optical Spectroscopy and Microscopy Research in the Allen group encompasses the characterization of fundamental interfacial phenomena. Aqueous surfaces are of particular interest with emphasis on understanding surface structure. Investigations of molecular organization and orientation, and chemical reaction mechanisms at gas - liquid, gas - solid, and liquid - solid interfaces are of interest. Laboratory experiments are designed to further understand organization of solvated ions and molecules such as water, lipids, and fatty acids at surfaces and interfaces of biological and environmental relevance. Cell membranes, atmospheric aerosols, cloud microdroplets, and geochemical systems are interfacial systems that can be studied using vibrational spectroscopic methods. The Allen group utilizes and designs optical spectroscopic instruments to this end. The applications to this work drive the fundamental investigations. For example, in the atmosphere heterogeneous chemistry of liquid aerosols plays a critical role in thunderstorm and lightening production. In biology, cell membranes are dynamic barriers and gateways to the cell interior as is skin on a more macroscopic level. The lung lining is a uniquely dynamic barrier that is critical for oxygen and carbon dioxide transport to and from biological tissues. In geochemistry, water-solvated ions and ion pairs and minerals interact at surfaces and the interaction strength is key to the mechanisms of adsorption and transport. Cancer margin detection (collaborators Coe, Magliery, Hitchcock, Martin, Povoski) is focused on methodology and technology development. To understand the molecular-level details of an interface, state-of-the-art nonlinear optical technologies that utilize ultra-fast femto and picosecond laser pulses are necessary. Hence, surface vibrational sum frequency generation (VSFG) spectroscopy, broadband and scanning technologies, are used to elucidate interfacial chemistry. VSFG is inherently interface-selective and provides molecular-level interfacial information that includes relative orientation and structure of the surface species, i.e. the surface signature. An array of analytical optical spectroscopic and interfacial methods is incorporated to fully understand the heterogeneous chemical processes at an interface, for example, polarized Raman and infrared spectroscopies and microscopies, broadband VSFG, specular reflection infrared spectroscopy, and Brewster angle microscopy for biological and environmental applications. Current Research Funding: National Science Foundation - Chemistry Division; Department of Energy - Basic Energy Sciences; National Institute of Health Previous Allen group members have positions in industry, national laboratories, and academia: PPG Technologies in Pittsburgh, KLA Tencor; Batelle Corporation (Analytical and Aerosol Divisions); Chemical Abstracts Service; Canadian Synchotron Facility; Spartan Chemical; OSU Surface Science Facility; Syngenta, Switzerland; Pacific Northwest National Laboratory; professor positions at Bowdoin College-Maine and Herbei University in Baoding, China. > Dr. Allen is accepting new graduate students for the Fall of 2013 that have interest in studying ion and molecular processes at aqueous surfaces using laser technology, specifically applying and learning vibrational phase-sensitive sum frequency generation spectroscopy. Graduate students from any of the chemistry, biochemistry, or chemical physics divisions are encouraged to request a meeting to discuss this project.

近期论文

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C. Sanders, D. Verreault, G. S. Frankel, H. C. Allen; The Role of Sulfur in the Atmospheric Corrosion of Silver, J. Electrochem. Soc., in review 12/2014. E. C. Griffith, R. J. Perkins, D. M. Telesford, E. M. Adams, L. Cwiklik, H. C. Allen, M. Roeselová, V. Vaida; Interaction of L-Phenylalanine with a Phospholipid Monolayer at the Water-Air Interface, J. Phys. Chem. B., just accepted (2014). W. Hua, D. Verreault, H. C. Allen; Surface Electric Fields of Aqueous Solutions of NH4NO3, Mg(NO3)2, NaNO3, and LiNO3: Implications for Atmospheric Aerosol Chemistry, J. Phys. Chem. C 118(43), 24941-24949 (2014). pdf & SI R. Li, D. Verreault, A. Payne, C. L. Hitchcock, S. P. Povoski, E. W. Martin Jr., H. C. Allen; Effects of Laser Excitation Wavelength and Optical Mode on Raman Spectra of Human Fresh Colon, Pancreas, and Prostate Tissues, J. Raman Spectrosc. 45(9), 773-780 (2014). pdf & SI W. Hua, D. Verreault, Z. Huang, E. M. Adams, H. C. Allen; Cation Effects on Interfacial Water Organization of Aqueous Chloride Solutions. I. Monovalent Cations: Li+, Na+, K+, and NH4+, J. Phys. Chem. B 118(28), 8433-8440 (2014). pdf & SI J. V. Coe, Z. Chen, R. Li, R. Butke, B. Miller, C. L. Hitchcock, H. C. Allen, S. P. Povoski, E. W. Martin, Jr; Imaging Infrared Spectroscopy for Fixation-Free Liver Tumor Detection, Proc. SPIE 8947, 89470B/1-89470B/6 (2014). pdf W. Hua, D. Verreault, H. C. Allen; Surface Prevalence of Perchlorate Anions at the Air/Aqueous Interface, J. Phys. Chem. Lett. 4(24), 4231-4236 (2013). pdf & SI Z. Chen, R. Butke, B. Miller, C. L. Hitchcock, H. C. Allen, S. P. Povoski, E. W. Martin, Jr., J. V. Coe; Infrared Metrics for Fixation-Free Liver Tumor Detection, J. Phys. Chem. B 117(41), 12442-12450 (2013). pdf & SIa & SIb E. M. Adams, H. C. Allen; Palmitic Acid on Salt Subphases and in Mixed Monolayers of Cerebrosides: Application to Atmospheric Aerosol Chemistry, Atmosphere 4(4), 315-336 (2013). pdf Z. Huang, W. Hua, D. Verreault, H. C. Allen; Influence of Salt Purity on Na+ and Palmitic Acid Interactions, J. Phys. Chem. A 117(50), 13412-13418 (2013) [Prof. Terry A. Miller Festschrift Issue]. pdf & SI W. Hua, D. Verreault, E. M. Adams, Z. Huang, H. C. Allen; Impact of Salt Purity on Interfacial Water Organization Revealed by Conventional and Heterodyne-Detected Vibrational Sum Frequency Generation Spectroscopy, J. Phys. Chem. C 117(38), 19577-19585 (2013). pdf & SI D. Verreault, H. C. Allen; Bridging the Gap between Microscopic and Macroscopic Views of Air/Aqueous Salt Interfaces, Chem. Phys. Lett. 586, 1-9 (2013). pdf Z. Huang, W. Hua, D. Verreault, H. C. Allen; Salty Glycerol Versus Salty Water Surface Organization: Bromide and Iodide Surface Propensities, J. Phys. Chem. A 117(29), 6346-6353 (2013) [Prof. John C. Wright Festschrift Issue]. pdf A. M. Jubb, D. Verreault, R. Posner, L. J. Criscenti, L. E. Katz, H. C. Allen; Sulfate Adsorption at the Buried Hematite/Solution Interface Investigated using Total Internal Reflection (TIR)-Raman Spectroscopy, J. Colloid Interface Sci. 400, 140-146 (2013). pdf & SI D. Verreault, A. M. Jubb, G. S. Frankel, M. Stratmann, H. C. Allen, R. Posner; Laser Effects on Volta Potential Transients Recorded by a Kelvin Probe, ECS Electrochem. Lett. 2(5), H19-H21 (2013). pdf D. Verreault, W. Hua, H. C. Allen; From Conventional to Phase-Sensitive Vibrational Sum Frequency Generation Spectroscopy: Probing Water Organization at Aqueous Interfaces, J. Phys. Chem. Lett. 3(20), 3012-3028 (2012). pdf R. Posner, A. M. Jubb, G. S. Frankel, M. Stratmann, H. C. Allen; A Simultaneous In Situ Kelvin Probe and Raman Spectroscopy Analysis of Electrode Potentials and Molecular Structures at Polymer Covered Salt Layers on Steel, Electrochim. Acta 83, 327-334 (2012). (This article can be accessed from the publisher’s website.) E. C. Griffith, E. M. Adams, H. C. Allen, V. Vaida; Hydrophobic Collapse of a Stearic Acid Film by Adsorbed L-Phenylalanine at the Air-Water Interface, J. Phys. Chem. B 116(27), 7849-7857 (2012). pdf & SI A. M. Jubb, H. C. Allen; Bisulfate Dehydration at the Air/Solution Interface Probed by Vibrational Sum Frequency Generation Spectroscopy, J. Phys. Chem. C 116(24), 13161-13168 (2012). pdf & SI R. Posner, A. M. Jubb, G. S. Frankel, M. Stratmann, H. C. Allen; A Simultaneous Kelvin Probe and Raman Spectroscopy Approach for In-Situ Surface and Interface Analysis, Electrochim. Acta 76, 34-42 (2012). (This article can be accessed from the publisher’s website.)