Heather C. Allen

About

From Wikipedia

Heather Cecile Allen is a professor and research chemist, who leads the Allen Group at Ohio State University. Dr. Allen's research focuses on interfacial phenomena, particularly those involving water and air. Her work has broad application ranging from medicine to climate change. She also develops nonlinear optical spectroscopy and microscopy instruments for the examination of interfacial surfaces.

Published Works

• Vibrational Spectroscopic Characterization of Hematite, Maghemite, and Magnetite Thin Films Produced by Vapor Deposition
• Vibrational Spectroscopy of Aqueous Sodium Halide Solutions and Air−Liquid Interfaces:  Observation of Increased Interfacial Depth
• Vibrational Spectroscopic Studies of Aqueous Interfaces:  Salts, Acids, Bases, and Nanodrops
• Unified Molecular Picture of the Surfaces of Aqueous Acid, Base, and Salt Solutions
• Interfacial Water Structure Associated with Phospholipid Membranes Studied by Phase-Sensitive Vibrational Sum Frequency Generation Spectroscopy
• DPPC Langmuir Monolayer at the Air−Water Interface:  Probing the Tail and Head Groups by Vibrational Sum Frequency Generation Spectroscopy
• Air−Liquid Interfaces of Aqueous Solutions Containing Ammonium and Sulfate: Spectroscopic and Molecular Dynamics Studies
• Observation of Hydronium Ions at the Air−Aqueous Acid Interface:  Vibrational Spectroscopic Studies of Aqueous HCl, HBr, and HI
• Surface Studies of Aqueous Methanol Solutions by Vibrational Broad Bandwidth Sum Frequency Generation Spectroscopy
• Shedding light on water structure at air–aqueous interfaces: ions, lipids, and hydration
Environmental Chemistry at Vapor/Water Interfaces: Insights from Vibrational Sum Frequency Generation Spectroscopy
Solvation of Magnesium Dication: Molecular Dynamics Simulation and Vibrational Spectroscopic Study of Magnesium Chloride in Aqueous Solutions
The Analysis of Interference Effects in the Sum Frequency Spectra of Water Interfaces†
Ionic Binding of Na+ versus K+ to the Carboxylic Acid Headgroup of Palmitic Acid Monolayers Studied by Vibrational Sum Frequency Generation Spectroscopy
Binding of Mg2+and Ca2+to Palmitic Acid and Deprotonation of the COOH Headgroup Studied by Vibrational Sum Frequency Generation Spectroscopy
Octreotide Abolishes the Acute Decrease in Bone Turnover in Response to Oral Glucose
Water-Induced Reorganization of Ultrathin Nitrate Films on NaCl: Implications for the Tropospheric Chemistry of Sea Salt Particles
Na+ and Ca2+ Effect on the Hydration and Orientation of the Phosphate Group of DPPC at Air−Water and Air−Hydrated Silica Interfaces
The air–liquid interface of benzene, toluene, m-xylene, and mesitylene: a sum frequency, Raman, and infrared spectroscopic study
Condensing Effect of Palmitic Acid on DPPC in Mixed Langmuir Monolayers
Surface Structural Studies of Methanesulfonic Acid at Air /Aqueous Solution Interfaces Using Vibrational Sum Frequency Spectroscopy†
Interfacial Water Structure and Effects of Mg2+and Ca2+Binding to the COOH Headgroup of a Palmitic Acid Monolayer Studied by Sum Frequency Spectroscopy
Organization of Water and Atmospherically Relevant Ions and Solutes: Vibrational Sum Frequency Spectroscopy at the Vapor/Liquid and Liquid/Solid Interfaces
Reorganization and Caging of DPPC, DPPE, DPPG, and DPPS Monolayers Caused by Dimethylsulfoxide Observed Using Brewster Angle Microscopy
Aqueous divalent metal–nitrate interactions: hydration versus ion pairing
Electric Field Reversal of Na2SO4, (NH4)2SO4, and Na2CO3 Relative to CaCl2 and NaCl at the Air/Aqueous Interface Revealed by Heterodyne Detected Phase-Sensitive Sum Frequency
From Conventional to Phase-Sensitive Vibrational Sum Frequency Generation Spectroscopy: Probing Water Organization at Aqueous Interfaces
Direct comparison of phase-sensitive vibrational sum frequency generation with maximum entropy method: Case study of water
Dangling OD Confined in a Langmuir Monolayer
Phase-Sensitive Sum Frequency Revealing Accommodation of Bicarbonate Ions, and Charge Separation of Sodium and Carbonate Ions within the Air/Water Interface
Effect of cation enrichment on dipalmitoylphosphatidylcholine (DPPC) monolayers at the air-water interface
Surface Potential of DPPC Monolayers on Concentrated Aqueous Salt Solutions
Surface pKa of octanoic, nonanoic, and decanoic fatty acids at the air–water interface: applications to atmospheric aerosol chemistry
Competition between DPPC and SDS at the Air−Aqueous Interface
Adsorption of Ethylene Glycol Vapor on α-Al2O3(0001) and Amorphous SiO2Surfaces: Observation of Molecular Orientation and Surface Hydroxyl Groups as Sorption Sites
Bulk Contributions Modulate the Sum-Frequency Generation Spectra of Water on Model Sea-Spray Aerosols
Competition between Atmospherically Relevant Fatty Acid Monolayers at the Air/Water Interface
Hydrophobic Collapse of a Stearic Acid Film by Adsorbed l-Phenylalanine at the Air–Water Interface
Cation Effects on Interfacial Water Organization of Aqueous Chloride Solutions. I. Monovalent Cations: Li+, Na+, K+, and NH4+
Surface vibrational sum frequency and Raman studies of PAMAM G0, G1 and acylated PAMAM G0 dendrimers
Interactions of Dimethylsulfoxide with a Dipalmitoylphosphatidylcholine Monolayer Studied by Vibrational Sum Frequency Generation
Water Structure at the Air−Aqueous Interface of Divalent Cation and Nitrate Solutions
Interfacial Molecular Organization at Aqueous Solution Surfaces of Atmospherically Relevant Dimethyl Sulfoxide and Methanesulfonic Acid Using Sum Frequency Spectroscopy and Molecular Dynamics Simulation
Impact of Salt Purity on Interfacial Water Organization Revealed by Conventional and Heterodyne-Detected Vibrational Sum Frequency Generation Spectroscopy
Nitrate Anions and Ion Pairing at the Air−Aqueous Interface
Relative Order of Sulfuric Acid, Bisulfate, Hydronium, and Cations at the Air–Water Interface
Interaction of l-Phenylalanine with a Phospholipid Monolayer at the Water–Air Interface
Oxidation of oleic acid at air/liquid interfaces
Spectroscopic and Computational Studies of Aqueous Ethylene Glycol Solution Surfaces
Adsorption of 4-Picoline and Piperidine to the Hydrated SiO2Surface: Probing the Surface Acidity with Vibrational Sum Frequency Generation Spectroscopy
Monomer, clusters, liquid: an integrated spectroscopic study of methanol condensation
The Role of Sulfur in the Atmospheric Corrosion of Silver
Diffuse Reflection Broad Bandwidth Sum Frequency Generation from Particle Surfaces
Real-Time Investigation of Lung Surfactant Respreading with Surface Vibrational Spectroscopy
Sodium–carboxylate contact ion pair formation induces stabilization of palmitic acid monolayers at high pH
New Insights into Lung Surfactant Monolayers Using Vibrational Sum Frequency Generation Spectroscopy
Ethylenediamine at Air/Liquid and Air/Silica Interfaces: Protonation Versus Hydrogen Bonding Investigated by Sum Frequency Generation Spectroscopy
Surface Electric Fields of Aqueous Solutions of NH4NO3, Mg(NO3)2, NaNO3, and LiNO3: Implications for Atmospheric Aerosol Chemistry
Surface organization of a DPPC monolayer on concentrated SrCl2 and ZnCl2 solutions
Effect of Magnesium Cation on the Interfacial Properties of Aqueous Salt Solutions
Water, chloroform, acetonitrile, and atrazine adsorption to the amorphous silica surface studied by vibrational sum frequency generation spectroscopy
Methanol Reaction with Sulfuric Acid:  A Vibrational Spectroscopic Study
Surface Residence and Uptake of Methyl Chloride and Methyl Alcohol at the Air/Water Interface Studied by Vibrational Sum Frequency Spectroscopy and Molecular Dynamics
Piperidine Adsorption on Hydrated α-Alumina (0001) Surface Studied by Vibrational Sum Frequency Generation Spectroscopy
Bridging the gap between microscopic and macroscopic views of air/aqueous salt interfaces
Effect of pH and Salt on Surface pKa of Phosphatidic Acid Monolayers
Interfacial Supramolecular Structures of Amphiphilic Receptors Drive Aqueous Phosphate Recognition
Water Structure at Aqueous Solution Surfaces of Atmospherically Relevant Dimethyl Sulfoxide and Methanesulfonic Acid Revealed by Phase-Sensitive Sum Frequency Spectroscopy
Solvation of Calcium-Phosphate Headgroup Complexes at the DPPC/Aqueous Interface
Molecular-level origin of the carboxylate head group response to divalent metal ion complexation at the air–water interface
Minimizing Transmission Electron Microscopy Beam Damage during the Study of Surface Reactions on Sodium Chloride
Surface Prevalence of Perchlorate Anions at the Air/Aqueous Interface
Cation effects on phosphatidic acid monolayers at various pH conditions
Solvent-Shared Ion Pairs at the Air–Solution Interface of Magnesium Chloride and Sulfate Solutions Revealed by Sum Frequency Spectroscopy and Molecular Dynamics Simulations
Analytical Measurements of Atmospheric Urban Aerosol
Arginine–Phosphate Recognition Enhanced in Phospholipid Monolayers at Aqueous Interfaces
Structure of Butanol and Hexanol at Aqueous, Ammonium Bisulfate, and Sulfuric Acid Solution Surfaces Investigated by Vibrational Sum Frequency Generation Spectroscopy†
Salty Glycerol versus Salty Water Surface Organization: Bromide and Iodide Surface Propensities
Incorporation and Exclusion of Long Chain Alkyl Halides in Fatty Acid Monolayers at the Air−Water Interface
Bisulfate Dehydration at Air/Solution Interfaces Probed by Vibrational Sum Frequency Generation Spectroscopy
Influence of Salt Purity on Na+and Palmitic Acid Interactions
Assembly and relaxation behaviours of phosphatidylethanolamine monolayers investigated by polarization and frequency resolved SFG-VS
Uptake and Surface Reaction of Methanol by Sulfuric Acid Solutions Investigated by Vibrational Sum Frequency Generation and Raman Spectroscopies
Effective Diffusion Coefficients for Methanol in Sulfuric Acid Solutions Measured by Raman Spectroscopy
Reduced Condensing and Ordering Effects by 7-Ketocholesterol and 5β,6β-Epoxycholesterol on DPPC Monolayers
Sulfate adsorption at the buried hematite/solution interface investigated using total internal reflection (TIR)-Raman spectroscopy
Iron(III) Speciation Observed at Aqueous and Glycerol Surfaces: Vibrational Sum Frequency and X-ray
Characterization of Ultrathin Films of γ-Al2O3and the Chemistry of 1,3-Butadiene on NiAl(001) and γ-Al2O3
1-Methyl Naphthalene Reorientation at the Air−Liquid Interface upon Water Saturation Studied by Vibrational Broad Bandwidth Sum Frequency Generation Spectroscopy
Sulfate Adsorption at the Buried Fluorite–Solution Interface Revealed by Vibrational Sum Frequency Generation Spectroscopy
Thermodynamic versus non-equilibrium stability of palmitic acid monolayers in calcium-enriched sea spray aerosol proxy systems
Extracting Infrared Spectra of Protein Secondary Structures Using a Library of Protein Spectra and the Ramachandran Plot
Infrared Metrics for Fixation-Free Liver Tumor Detection
Dimerization of 1,3-Butadiene on Highly Characterized Hydroxylated Surfaces of Ultrathin Films of γ-Al2O3
Lipid composition and molecular interactions change with depth in the avian stratum corneum to regulate cutaneous water loss
Effects of laser excitation wavelength and optical mode on Raman spectra of human fresh colon, pancreas, and prostate tissues
Vibrational Spectroscopy of Gas–Liquid Interfaces
Thermodynamic Signatures of the Origin of Anti-Hofmeister Selectivity for Phosphate at Aqueous Interfaces
Non-Aqueous Solvation ofn-Octanol and Ethanol: Spectroscopic and Computational Studies
New Insights into Lung Surfactant Monolayers Using Vibrational Sum Frequency Generation Spectroscopy
Organization of lipids in avian stratum corneum: Changes with temperature and hydration
Illustration of Deviations in the Beer-Lambert Law in an Instrumental Analysis Laboratory: Measuring Atmospheric Pollutants by Differential Optical Absorption Spectrometry
Handbook of Spectroscopy, Volumes 1 and 2 Edited by Günter Gauglitz (University of Tübingen) and Tuan Vo-Dinh (Oak Ridge National Laboratory). Wiley-VCH Verlag GmbH & Co. KGaA: Weinheim. 2003. 1168 pp. $435.00. ISBN: 3-527-29782-0.
Interfacial properties of avian stratum corneum monolayers investigated by Brewster angle microscopy and vibrational sum frequency generation
Sodium Drives Interfacial Equilibria for Semi-Soluble Phosphoric and Phosphonic Acids of Model Sea Spray Aerosol Surfaces
Trace Metal Enrichment Driven by Phosphate Functional Group Binding Selectivity
Presence and persistence of a highly ordered lipid phase state in the avian stratum corneum
Relating Structure and Ice Nucleation of Mixed Surfactant Systems Relevant to Sea Spray Aerosol
Imaging infrared spectroscopy for fixation-free liver tumor detection
Molecular Recognition and Hydration Energy Mismatch Combine To Inform Ion Binding Selectivity at Aqueous Interfaces
Structural Effects of Cation Binding to DPPC Monolayers
The Ocean’s Elevator: Evolution of the Air–Seawater Interface during a Small-Scale Algal Bloom
An easily accessible isospiropyran switch
Vibrational exciton delocalization precludes the use of infrared intensities as proxies for surfactant accumulation on aqueous surfaces
Bulk Contributions Modulate the Sum-Frequency Generation Spectra of Interfacial Water on Model Sea-Spray Aerosols
Vibrational Spectroscopic Studies of Aqueous Interfaces: Salts, Acids, Bases, and Nanodrops
List of Contributors
Functional Group Identification for FTIR Spectra Using Image-Based Machine Learning Models
One-Pot Aldol Cascade for the Preparation of Isospiropyrans, Flavylium Salts, and bis-Spiropyrans
Insight into the Ionizing Surface Potential Method and Aqueous Sodium Halide Surfaces
Preface of John C. Hemminger Festschrift
Low temperature interfacial solvation and morphology of marine hydrogels in sea spray aerosol proxy films
Low temperature interfacial solvation and morphology of marine hydrogels in sea spray aerosol proxy films
Low temperature interfacial solvation and morphology of marine hydrogels in sea spray aerosol proxy films
Low temperature interfacial solvation and morphology of marine hydrogels in sea spray aerosol proxy films
Correction: Assembly and relaxation behaviours of phosphatidylethanolamine monolayers investigated by polarization and frequency resolved SFG-VS
Hydration of ferric chloride and nitrate in aqueous solutions: water-mediated ion pairing revealed by Raman spectroscopy
Calcium bridging drives polysaccharide co-adsorption to a proxy sea surface microlayer
Preface: Special Topic on Ions in Water
Molecular constituents of colorectal cancer metastatic to the liver by imaging infrared spectroscopy
Vibrational broad bandwidth and scanning sum frequency generation spectroscopy of air-solid and air-liquid interfaces
Circuit Analysis of Ionizing Surface Potential Measurements of Electrolyte Solutions
EMSL Science Theme Advisory Panel Workshop - Atmospheric Aerosol Chemistry, Climate Change, and Air Quality
Bulk Contributions Modulate the Sum-Frequency Generation Spectra of Interfacial Water on Model Sea-Spray Aerosols
Biogeochemical Equation of State for the Sea-Air Interface
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Other Resources

• en.wikipedia.org
• web.chemistry.ohio-state.edu

Schools

University of California, Irvine

Public research university in Irvine, California, United States

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Ohio State University

Public research university in Columbus, Ohio, United States

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Saddleback College

Community college in Mission Viejo, California, United States

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University of Sheffield

University in Sheffield, United Kingdom

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