Jeanne Hossenlopp - Academia.edu (original) (raw)

Papers by Jeanne Hossenlopp

Journal of Physical Chemistry, 1992

Proceedings of the 2005 IEEE International Frequency Control Symposium and Exposition, 2005., 2005

ABSTRACT Following successful application in gas sensing, acoustic wave liquid sensors attracted ... more ABSTRACT Following successful application in gas sensing, acoustic wave liquid sensors attracted considerable attention due to the need for real-time, rapid and direct detection where the device is in direct contact with the solution. More importantly, there is a need for field measurement capability with portable devices. Challenges include a physical layout of the RF circuitry to minimize parasitic and spurious noise, continuous and realtime measurements capability, and obtaining vector network analyzer (VNA) performance in a portable RF unit, especially since the sensor signal noise dictates the limit of detection (LOD). Polymer-guided shear horizontal surface acoustic wave (SH-SAW) sensor platforms operating around 105 MHz on 36deg rotated Y-cut LiTaO 3 are investigated as portable detectors in liquid environments. The described system is self-contained including RF signal source, sensor input/output signal conditioning, and sensor signal amplitude and phase measuring capabilities. Amplitude and phase signals from the sensor are differentially compared with concomitant signals available directly from the RF signal source. The two primary outputs from the system are voltages related to the detected amplitude and phase changes that are caused by the sensor's response to analyte sorption by the coated device. Several devices, coated with chemically sensitive polymers, are investigated in the detection of low concentrations (10-60 ppm) of ethylbenzene and xylenes in water using the RF portable unit. The units were tested for both reproducibility and repeatability, and the results matched very well with VNA measurements

Laser Applications to Chemical Dynamics, 1987

ABSTRACT We have measured one color multiphoton dissociation/ionization (MPD/MPI) spectra for a s... more ABSTRACT We have measured one color multiphoton dissociation/ionization (MPD/MPI) spectra for a series of arene molybdenum tricarbonyls. These experiments measure the relative timescales of multiphoton excitation, intramolecular energy redistribution (IER) and unimolecular dissociation under collision free conditions. The results indicate that IER is accelerated by the presence of low frequency vibrations and by molecular structures and bonding which enable a molecule to remain intact longer during the course of multiphoton excitation. The results for the organomolybdenum molecules are consistent with our earlier results obtained in a similar study of organochromium molecules.

The Journal of Physical Chemistry, 1982

The Journal of Physical Chemistry, 1995

The Journal of Physical Chemistry, 1990

The reaction of chlorine atoms with DâS, forming DCl and DS, has been investigated by using time-... more The reaction of chlorine atoms with DâS, forming DCl and DS, has been investigated by using time-resolved infrared diode laser absorption spectroscopic probing of both the D³⁵Cl and D³⁷Cl product. The rate constant obtained by using the pseudo-first-order method was found to be 3.2 ({plus minus} 0.3) à 10⁻¹¹ cm³ molecule⁻¹ s⁻¹. The vibrational energy distribution in the DCl fragment

The Journal of Physical Chemistry, 1992

We have measured the multiphoton ionization spectrum of benzene chromium tricarbonyl by monitorin... more We have measured the multiphoton ionization spectrum of benzene chromium tricarbonyl by monitoring nondispersed vacuum-UV emission at 90 o to the incoming laser beam. The spectrum recorded was identical to the total ion current spectrum simultaneously measured with parallel plate electrodes. The dependence of the vacuum-UV signal on the pressure of added buffer gas and collection field strength differs significantly from that of the ion signal. The majority of differences can be interpreted in terms of basic electron impact processes and subsequent interatomic/molecular reactions

The Journal of Physical Chemistry, 1992

Time-resolved diode laser infrared absorption/gain spectroscopy was used to investigate vibration... more Time-resolved diode laser infrared absorption/gain spectroscopy was used to investigate vibrational energy disposal in H 2 O produced in the reaction of OH with cyclooctane. Persistant population inversions under multiple-collision conditions were observed while probing transitions between the 000-010, and 010-020, and 010-100 vibrational states of H 2 O. An equilibrated rotational temperature was determined to be 500±200 K for typical reaction conditions

The Journal of Physical Chemistry, 1987

ABSTRACT The authors have measured the effects of added buffer gas on the ionization (MPI) signal... more ABSTRACT The authors have measured the effects of added buffer gas on the ionization (MPI) signal of various arene chromium tricarbonyls and Cr(CO)â. Using basic gaseous electronics theory and experimental results on ion multiplication behavior in pure buffer gases, they have found the simplest method for quantitative analysis of collisional effects in MPI systems. They have applied this discharge model to the multiphoton ionization signal of chromium compounds as a function of helium, argon, and xenon pressures at a number of wavelengths and ion collection plant voltages. Where simple ion multiplication behavior holds, the measured ion signal is directly proportional to the initial MPI yield. This is of crucial importance for MPI studies where product branching ratios are being determined. When multiplication theory does not model the ion signal pressure dependence, other processes which may influence ion production in the system must be considered.

ACS Symposium Series, 2009

The development of polymeric materials and their optimization for high performance applications r... more The development of polymeric materials and their optimization for high performance applications requires a detailed understanding of their degradation sensitivities, and the various features affecting durability and reliability. This book provides an overview of the current trends in this research field. Individual topics present the latest concepts related to material lifetime prediction methodologies, new insight into complex degradation mechanisms, and how the knowledge of their performance limiting processes can be applied to the design of materials with improved features. Appropriate analytical characterization techniques that are fundamental to all areas of polymer degradation and optimization studies and the overlapping performance interests in a range of existing and developing applications are discussed. The audience will be material engineers and polymer chemists working in academia, large research institutes and industry dealing with polymer design and development, material testing and durability assessments.

Proceedings of the 2002 IEEE International Frequency Control Symposium and PDA Exhibition (Cat. No.02CH37234), 2002

... Boima Morray, Suiqiong Li, ' Jeanne Hossenlopp,2 Richard Cernosek,' and Fabien Joss... more ... Boima Morray, Suiqiong Li, ' Jeanne Hossenlopp,2 Richard Cernosek,' and Fabien Josse ... 72, pp. 4888-4898,2000. [4] F. Josse, F. Bender and RW Cernosek, “Guided SH-SAW sensors for chemical and bio-chemical detection in liquids,” Analytical Chemistry, vol. 73, pp. ...

ACS Symposium Series, 2005

The addition of zinc/copper methacrylate hydroxy double salt or copper hydroxy methacrylate to bu... more The addition of zinc/copper methacrylate hydroxy double salt or copper hydroxy methacrylate to bulk polymerized PMMA is shown to substantially influence polymer thermal degradation. Addition of 2-4% by weight of either additive is shown to increase the temperature of 50% mass loss by 40-60° C in thermal gravimetric analysis. In cone calorimetry experiments, the additives lead to 20-30% reduction in total heat release but no significant change in peak heat release rate. The polymer/additive structures are best described as microcomposites based on X-ray diffraction and transmission electron microscopy analysis. X-ray diffraction analysis of residues following cone calorimetry indicates formation of reduced copper from copper hydroxy methacrylate.

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004., 2004

Guided shear horizontal surface acoustic wave (guided SH-SAW) devices coated with a polymer waveg... more Guided shear horizontal surface acoustic wave (guided SH-SAW) devices coated with a polymer waveguiding layer and/or chemically sensitive layer have been investigated for the detection of analytes in liquid environments in our previous work. Design considerations for optimizing these devices for liquid phase detection is the focus of the current work. Using dual delay line geometry on LiTaO3, guided SH-SAW

ACS Symposium Series, 2009

Layered Double Hydroxides (LHDs) have been identified as a promising new additive class for gener... more Layered Double Hydroxides (LHDs) have been identified as a promising new additive class for generating polymer nanocomposites with enhanced thermal stability and improved flammability properties. An advantage of these materials over structurally similar smectite clays is the ability to tune physical and chemical properties via simple synthetic strategies that can modify the metal hydroxide layer and/or the identity of the charge-balancing interlayer anion. Recent advances in development of LDHs for polymer fire retardancy applications are reviewed here and a discussion of future challenges is provided.

2010 IEEE International Frequency Control Symposium, 2010

... Arnold K. Mensah-Brown1, Darlington Mlambo2, Fabien Josse1, Jeanne Hossenlopp2 1Department of... more ... Arnold K. Mensah-Brown1, Darlington Mlambo2, Fabien Josse1, Jeanne Hossenlopp2 1Department of Electrical and Computer Engineering and 2Department of Chemistry Marquette University Milwaukee, WI, USA Fabien.Josse@marquette.edu ... F. Bender, CH. ...

SPIE Proceedings, 1998

Infrared spectroscopy of entrance channel complexes. [Proceedings of SPIE 3271, 164 (1998)]. Davi... more Infrared spectroscopy of entrance channel complexes. [Proceedings of SPIE 3271, 164 (1998)]. David T. Anderson, Rebecca L. Schwartz, Michael W. Todd, Jeanne M. Hossenlopp, Marsha I. Lester. Abstract. The entrance channel ...

IEEE Ultrasonics Symposium, 2005., 2005

The design and analysis of sensor arrays using polymer-coated acoustic wave devices for the detec... more The design and analysis of sensor arrays using polymer-coated acoustic wave devices for the detection and identification of analytes in aqueous environments require an appropriate selection and characterization of the chemically sensitive coatings. For viscoelastic layers, material parameters such as the shear storage and loss moduli, G' and G", of the coating can contribute significantly to the sensor's response and

The Journal of Physical Chemistry, 1981

Materials Processing and Interfaces, 2012

ABSTRACT Layered double hydroxides (LDHs), and other similar nanodimensional layered metal hydrox... more ABSTRACT Layered double hydroxides (LDHs), and other similar nanodimensional layered metal hydroxides, offer promise for a number of applications ranging from controlled release of bioactive compounds to polymer fire retardant additives. Tailoring LDHs for controlled release or adsorbant applications requires an understanding of the kinetics and thermodynamics of anion release or analyte uptake. Recent work in our laboratory on the effects of systematic alteration of the metal hydroxide layer and/or anion structure will be discussed. The composition of the metal hydroxide layer provides wide tunability in reactivity for controlled release or anion exchange reactions. Anion polarity and hydrogen bonding capability can be utilized to vary the extent and rates of exchange reactions. Similar approaches to LDH structural alterations are applied to the design of potential polymer fire retardant additives. The effect of metal hydroxide layer composition and anion structure and packing influences the morphology of LDH-polymer (nanocomposites) and their thermal/fire properties.

Journal of Physical Chemistry, 1992

Proceedings of the 2005 IEEE International Frequency Control Symposium and Exposition, 2005., 2005

ABSTRACT Following successful application in gas sensing, acoustic wave liquid sensors attracted ... more ABSTRACT Following successful application in gas sensing, acoustic wave liquid sensors attracted considerable attention due to the need for real-time, rapid and direct detection where the device is in direct contact with the solution. More importantly, there is a need for field measurement capability with portable devices. Challenges include a physical layout of the RF circuitry to minimize parasitic and spurious noise, continuous and realtime measurements capability, and obtaining vector network analyzer (VNA) performance in a portable RF unit, especially since the sensor signal noise dictates the limit of detection (LOD). Polymer-guided shear horizontal surface acoustic wave (SH-SAW) sensor platforms operating around 105 MHz on 36deg rotated Y-cut LiTaO 3 are investigated as portable detectors in liquid environments. The described system is self-contained including RF signal source, sensor input/output signal conditioning, and sensor signal amplitude and phase measuring capabilities. Amplitude and phase signals from the sensor are differentially compared with concomitant signals available directly from the RF signal source. The two primary outputs from the system are voltages related to the detected amplitude and phase changes that are caused by the sensor's response to analyte sorption by the coated device. Several devices, coated with chemically sensitive polymers, are investigated in the detection of low concentrations (10-60 ppm) of ethylbenzene and xylenes in water using the RF portable unit. The units were tested for both reproducibility and repeatability, and the results matched very well with VNA measurements

Laser Applications to Chemical Dynamics, 1987

ABSTRACT We have measured one color multiphoton dissociation/ionization (MPD/MPI) spectra for a s... more ABSTRACT We have measured one color multiphoton dissociation/ionization (MPD/MPI) spectra for a series of arene molybdenum tricarbonyls. These experiments measure the relative timescales of multiphoton excitation, intramolecular energy redistribution (IER) and unimolecular dissociation under collision free conditions. The results indicate that IER is accelerated by the presence of low frequency vibrations and by molecular structures and bonding which enable a molecule to remain intact longer during the course of multiphoton excitation. The results for the organomolybdenum molecules are consistent with our earlier results obtained in a similar study of organochromium molecules.

The Journal of Physical Chemistry, 1982

The Journal of Physical Chemistry, 1995

The Journal of Physical Chemistry, 1990

The reaction of chlorine atoms with DâS, forming DCl and DS, has been investigated by using time-... more The reaction of chlorine atoms with DâS, forming DCl and DS, has been investigated by using time-resolved infrared diode laser absorption spectroscopic probing of both the D³⁵Cl and D³⁷Cl product. The rate constant obtained by using the pseudo-first-order method was found to be 3.2 ({plus minus} 0.3) à 10⁻¹¹ cm³ molecule⁻¹ s⁻¹. The vibrational energy distribution in the DCl fragment

The Journal of Physical Chemistry, 1992

We have measured the multiphoton ionization spectrum of benzene chromium tricarbonyl by monitorin... more We have measured the multiphoton ionization spectrum of benzene chromium tricarbonyl by monitoring nondispersed vacuum-UV emission at 90 o to the incoming laser beam. The spectrum recorded was identical to the total ion current spectrum simultaneously measured with parallel plate electrodes. The dependence of the vacuum-UV signal on the pressure of added buffer gas and collection field strength differs significantly from that of the ion signal. The majority of differences can be interpreted in terms of basic electron impact processes and subsequent interatomic/molecular reactions

The Journal of Physical Chemistry, 1992

Time-resolved diode laser infrared absorption/gain spectroscopy was used to investigate vibration... more Time-resolved diode laser infrared absorption/gain spectroscopy was used to investigate vibrational energy disposal in H 2 O produced in the reaction of OH with cyclooctane. Persistant population inversions under multiple-collision conditions were observed while probing transitions between the 000-010, and 010-020, and 010-100 vibrational states of H 2 O. An equilibrated rotational temperature was determined to be 500±200 K for typical reaction conditions

The Journal of Physical Chemistry, 1987

ABSTRACT The authors have measured the effects of added buffer gas on the ionization (MPI) signal... more ABSTRACT The authors have measured the effects of added buffer gas on the ionization (MPI) signal of various arene chromium tricarbonyls and Cr(CO)â. Using basic gaseous electronics theory and experimental results on ion multiplication behavior in pure buffer gases, they have found the simplest method for quantitative analysis of collisional effects in MPI systems. They have applied this discharge model to the multiphoton ionization signal of chromium compounds as a function of helium, argon, and xenon pressures at a number of wavelengths and ion collection plant voltages. Where simple ion multiplication behavior holds, the measured ion signal is directly proportional to the initial MPI yield. This is of crucial importance for MPI studies where product branching ratios are being determined. When multiplication theory does not model the ion signal pressure dependence, other processes which may influence ion production in the system must be considered.

ACS Symposium Series, 2009

The development of polymeric materials and their optimization for high performance applications r... more The development of polymeric materials and their optimization for high performance applications requires a detailed understanding of their degradation sensitivities, and the various features affecting durability and reliability. This book provides an overview of the current trends in this research field. Individual topics present the latest concepts related to material lifetime prediction methodologies, new insight into complex degradation mechanisms, and how the knowledge of their performance limiting processes can be applied to the design of materials with improved features. Appropriate analytical characterization techniques that are fundamental to all areas of polymer degradation and optimization studies and the overlapping performance interests in a range of existing and developing applications are discussed. The audience will be material engineers and polymer chemists working in academia, large research institutes and industry dealing with polymer design and development, material testing and durability assessments.

Proceedings of the 2002 IEEE International Frequency Control Symposium and PDA Exhibition (Cat. No.02CH37234), 2002

... Boima Morray, Suiqiong Li, ' Jeanne Hossenlopp,2 Richard Cernosek,' and Fabien Joss... more ... Boima Morray, Suiqiong Li, ' Jeanne Hossenlopp,2 Richard Cernosek,' and Fabien Josse ... 72, pp. 4888-4898,2000. [4] F. Josse, F. Bender and RW Cernosek, “Guided SH-SAW sensors for chemical and bio-chemical detection in liquids,” Analytical Chemistry, vol. 73, pp. ...

ACS Symposium Series, 2005

The addition of zinc/copper methacrylate hydroxy double salt or copper hydroxy methacrylate to bu... more The addition of zinc/copper methacrylate hydroxy double salt or copper hydroxy methacrylate to bulk polymerized PMMA is shown to substantially influence polymer thermal degradation. Addition of 2-4% by weight of either additive is shown to increase the temperature of 50% mass loss by 40-60° C in thermal gravimetric analysis. In cone calorimetry experiments, the additives lead to 20-30% reduction in total heat release but no significant change in peak heat release rate. The polymer/additive structures are best described as microcomposites based on X-ray diffraction and transmission electron microscopy analysis. X-ray diffraction analysis of residues following cone calorimetry indicates formation of reduced copper from copper hydroxy methacrylate.

Proceedings of the 2004 IEEE International Frequency Control Symposium and Exposition, 2004., 2004

Guided shear horizontal surface acoustic wave (guided SH-SAW) devices coated with a polymer waveg... more Guided shear horizontal surface acoustic wave (guided SH-SAW) devices coated with a polymer waveguiding layer and/or chemically sensitive layer have been investigated for the detection of analytes in liquid environments in our previous work. Design considerations for optimizing these devices for liquid phase detection is the focus of the current work. Using dual delay line geometry on LiTaO3, guided SH-SAW

ACS Symposium Series, 2009

Layered Double Hydroxides (LHDs) have been identified as a promising new additive class for gener... more Layered Double Hydroxides (LHDs) have been identified as a promising new additive class for generating polymer nanocomposites with enhanced thermal stability and improved flammability properties. An advantage of these materials over structurally similar smectite clays is the ability to tune physical and chemical properties via simple synthetic strategies that can modify the metal hydroxide layer and/or the identity of the charge-balancing interlayer anion. Recent advances in development of LDHs for polymer fire retardancy applications are reviewed here and a discussion of future challenges is provided.

2010 IEEE International Frequency Control Symposium, 2010

... Arnold K. Mensah-Brown1, Darlington Mlambo2, Fabien Josse1, Jeanne Hossenlopp2 1Department of... more ... Arnold K. Mensah-Brown1, Darlington Mlambo2, Fabien Josse1, Jeanne Hossenlopp2 1Department of Electrical and Computer Engineering and 2Department of Chemistry Marquette University Milwaukee, WI, USA Fabien.Josse@marquette.edu ... F. Bender, CH. ...

SPIE Proceedings, 1998

Infrared spectroscopy of entrance channel complexes. [Proceedings of SPIE 3271, 164 (1998)]. Davi... more Infrared spectroscopy of entrance channel complexes. [Proceedings of SPIE 3271, 164 (1998)]. David T. Anderson, Rebecca L. Schwartz, Michael W. Todd, Jeanne M. Hossenlopp, Marsha I. Lester. Abstract. The entrance channel ...

IEEE Ultrasonics Symposium, 2005., 2005

The design and analysis of sensor arrays using polymer-coated acoustic wave devices for the detec... more The design and analysis of sensor arrays using polymer-coated acoustic wave devices for the detection and identification of analytes in aqueous environments require an appropriate selection and characterization of the chemically sensitive coatings. For viscoelastic layers, material parameters such as the shear storage and loss moduli, G' and G", of the coating can contribute significantly to the sensor's response and

The Journal of Physical Chemistry, 1981

Materials Processing and Interfaces, 2012

ABSTRACT Layered double hydroxides (LDHs), and other similar nanodimensional layered metal hydrox... more ABSTRACT Layered double hydroxides (LDHs), and other similar nanodimensional layered metal hydroxides, offer promise for a number of applications ranging from controlled release of bioactive compounds to polymer fire retardant additives. Tailoring LDHs for controlled release or adsorbant applications requires an understanding of the kinetics and thermodynamics of anion release or analyte uptake. Recent work in our laboratory on the effects of systematic alteration of the metal hydroxide layer and/or anion structure will be discussed. The composition of the metal hydroxide layer provides wide tunability in reactivity for controlled release or anion exchange reactions. Anion polarity and hydrogen bonding capability can be utilized to vary the extent and rates of exchange reactions. Similar approaches to LDH structural alterations are applied to the design of potential polymer fire retardant additives. The effect of metal hydroxide layer composition and anion structure and packing influences the morphology of LDH-polymer (nanocomposites) and their thermal/fire properties.