Past Events

2024

  • Headshot of Dr. Kaphan
    Nov 22, 2024 - 1:10 PM
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    Location
    1352 Gilman Hall, Iowa State University

    Hosted by: Dr. Fred Perras

    Title: Metal-Surface Stereoelectronic Communication in Surface Organometallic Catalysis

  • Nov 22, 2024 - 9:00 AM
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    Location
    2140 Hach Hall

    Title: Advancing 3D Printing and Ionic Liquids in Separation Science

    Link: here

  • Nov 21, 2024 - 11:15 AM
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    Location
    3140 Hach Hall

    Title: Improving Separations for Challenging Sample Analyses using Ionic Liquids

    Link: https://iastate.webex.com/iastate/j.php?MTID=mc77c84b9094ceb574a6dc2b8096a42ca

  • Head shot of speaker
    Nov 15, 2024 - 3:20 PM
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    Location
    1352 Gilman Hall, Iowa State University

    Hosted by: Mark Gordon

    Title: "Calculating Vibrationally Averaged Molecular Properties with Multicomponent Methods"

    Abstract

    Multicomponent methods are a rapidly emerging class of quantum-chemistry methods that inherently and directly include nuclear quantum effects such as zero-point energy and nuclear delocalization in quantum-chemistry calculations. Such nuclear quantum effects are often important when comparing experimentally measured molecular properties to those calculated theoretically. As an example, theoretically calculated rotational constants commonly change by 0.5% when vibrational averaging effects arising from zero-point energy are included. As accuracy with 0.1% of the measured value is normally needed to assist experimental studies, their inclusion in calculations is essential. In this talk, we will pedagogically introduce the multicomponent formalism, discuss our recent implementations of wave function-based multicomponent methods, and demonstrate how these methods can calculate accurate vibrationally averaged molecular properties such as geometries and rotational constants. Finally, we will show how multicomponent methods have the same computational scaling with respect to system size and similar working equations as the standard methods of quantum chemistry. These similarities make multicomponent methods ideally suited to include nuclear quantum effects in computationally chemistry calculations for a wide range of systems and by a diverse cohort of computational chemistry users.

    Biography

    Kurt R. Brorsen is an Assistant Professor of Chemistry at the University of Missouri. He received his Ph.D. in Physical Chemistry from Iowa State University in 2014 in the group of Mark S. Gordon. He was a postdoctoral research associate at the University of Illinois Urbana-Champaign from 2014-2018. His research focuses on the development of new theoretical quantum-chemistry methods. Current research interests include the development of new multicomponent methods for the inclusion of nuclear quantum effects in computational-chemistry calculations, the application of selected configuration interaction methods to novel systems, and computational studies of precursors for oxidative molecular layer deposition. 

  • Dr. Michael A. Reynolds
    Nov 15, 2024 - 1:10 PM
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    Location
    1352 Gilman Hall, Iowa State University

    Hosted By: Dr. Aaron Sadow 

    Title: Achieving Net Zero by Flipping for Hydrogen and Soaring on Soybeans.

  • Head shot of speaker
    Nov 1, 2024 - 3:20 PM
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    Location
    1352 Gilman Hall, Iowa State University

    Hosted by: Brett VanVeller

    Title: “Catch and Release: Manipulating the Chemistry of Radioactive Metal Ions to Develop the Next Generation of Metal-based Medicines.”

    Abstract:

    Stable and radioactive metal ions possess attractive properties for biomedical imaging and therapy. Our lab applies a cross-disciplinary approach that combines physical inorganic chemistry, coordination chemistry, chemical biology and preclinical imaging to transform aqua ions into tools for non-invasive diagnostic imaging, optical probes for image-guided surgical resection and targeted radiotherapy of cancers.

  • Jackie Applegate
    Nov 1, 2024 - 1:10 PM
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    Location
    1352 Gilman Hall, Iowa State University

    Hosted by: Dr. Theresa Windus

    Title: ISU - Foundation of Your Future

  • Oct 28, 2024 - 1:00 PM
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    Location
    Hach 0203

    Title: Development of the vibrating capillary nebulizer sample introduction system for inductively coupled plasma mass spectrometry

    Link: https://iastate.webex.com/meet/tltaylor

     

  • Dr. Sonya Hanson
    Oct 25, 2024 - 3:20 PM
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    Location
    1352 Gilman Hall, Iowa State University

    Hosted by: Dr. Davit Potoyan

    Title: "Biomolecules aren’t rocks:  Perspective on biological temperature sensors and protein ensembles"

  • Through thick and thin: Chemical strategies towards unique electronic and optical landscapes in atomically precise one-dimensional solids
    Oct 25, 2024 - 1:10 PM
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    Location
    1352 Gilman Hall, Iowa State University

    Hosted by: Dr. Kirill Kovnir 

    Title: Through thick and thin: Chemical strategies towards unique electronic and optical landscapes in atomically precise one-dimensional solids."

  • Oct 10, 2024 - 6:30 PM
    to Oct 10, 2024 - 8:30 PM
    Location
    Thiel Atrium, Hach Hall 1101

    Abstract:  This course is a part of the ACS Careers Pathways Series and is designed for members undertaking or considering a job search in industry.

  • Oct 10, 2024 - 5:30 PM
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    Location
    Thiel Atrium, Hach Hall 1101

    Join Dr. Balbes for an informal pizza dinner and Q&A regarding career planning in the physical sciences. You are invited to join Lisa Balbes for dinner. RSVP is required – and the deadline for the RSVP is Oct 9 at noon.

  • Oct 10, 2024 - 4:10 PM
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    Location
    Thiel Atrium, Hach Hall 1101

    Abstract: This workshop is applicable to undergraduates, graduate students, and postdoctoral scholars. It is also recommended for those revising their career path and job search strategy.

  • Oct 9, 2024 - 8:30 PM
    to Oct 9, 2024 - 9:30 PM
    Location
    Thiel Atrium, Hach Hall 1101

    Abstract: This course will help participants develop networking skills to enhance their job search and enlarge their professional networks to promote career advancement.

  • Oct 9, 2024 - 6:30 PM
    to Oct 9, 2024 - 8:15 PM
    Location
    Thiel Atrium, Hach Hall 1101

    Abstract: This interactive practical course dissects the interview process and presents it in easily navigable stages.

  • Oct 8, 2024 - 6:30 PM
    to Oct 8, 2024 - 8:30 PM
    Location
    Thiel Atrium, Hach Hall 1101

    Abstract: This course provides self-assessment tools to identify career values and strengths. Participants will compare and contrast the four sectors of chemistry employment to determine which sector best aligns with their values and strengths.

  • Oct 8, 2024 - 3:10 PM
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    Location
    Thiel Atrium, Hach Hall 1101

    Abstract: A chemistry background prepares you for much more than just a laboratory career.

  • Head shot of speaker
    Oct 4, 2024 - 3:20 PM
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    Location
    1352 Gilman Hall

    Hosted by: Aaron Rossini and Frederic Perras

    Title: Molecular-scale mapping of the biofilm matrix

    Abstract:

    Biofilm formation protects bacteria from antibiotic treatment and host immune responses, making biofilm infections difficult to treat. Within biofilms, bacterial cells are entangled in a self-produced extracellular matrix that often includes exopolysaccharides and high molecular weight proteins. Molecular-level descriptions of biofilm matrices have been challenging to attain due to their complex nature and lack of solubility and crystallinity. We seek to answer: What are the molecular biophysical principles of biofilm assembly? Since this question spans several scales—multicellular to atomic—we are developing multidisciplinary approaches that integrate microbiological methods with physical chemistry tools including microscopy and solid-state nuclear magnetic resonance (NMR).Our research is anticipated to lead to improved models to study biofilms, which will be useful in the development of anti-biofilm therapeutics. Additionally, the approaches that we develop will be useful for studying other complex materials.

    Bio:

    Courtney Reichhardt graduated from Montana State University with a BS in Chemistry in 2010. She then attended Stanford University where she joined Lynette Cegelski’s laboratory in the Department of Chemistry. There she pioneered the development of a novel approach that integrates solid-state NMR and electron microscopy analyses to quantitate the composition of biofilms. Her graduate research was supported by the Althouse Family Stanford Graduate Fellowship, and she earned her PhD in Chemistry in 2016.

    To expand her skill set, Courtney opted to do her postdoctoral training in the Department of Microbiology at the University of Washington with Matthew Parsek. There she studied the protective intermolecular interactions in the biofilm matrix of the pathogen Pseudomonas aeruginosa that allow for persistence in environments like those that it encounters during chronic cystic fibrosis lung infections. Her postdoctoral research was supported by several fellowships, and she was awarded two postdoc-to-faculty transition fellowships: a K99/R00 “Pathway to Independence” Award from the NIH (NIGMS) and the Cystic Fibrosis Foundation’s Postdoc-to-Faculty Award.

    Courtney joined the Department of Chemistry at Washington University as an Assistant Professor in 2021. Her research program leverages her unique multidisciplinary training to answer important questions about the molecular biophysical principles of biofilm assembly

  • Head shot of speaker
    Oct 4, 2024 - 1:10 PM
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    Location
    1352 Gilman Hall

    Hosted by: Art Winter

    Title: "1,4-Dihydro[1,2,4]triazin-4-yl: A stable paramagnetic building block for functional magnetic materials"

    Abstract

    1,4-Dihydro[1,2,4]triazin-4-yl is the fundamental paramagnetic structural element of stable radicals formally derived from the prototypical Blatter radical discovered over half a century ago. High chemical stability and favorable electrochemical, spectroscopic and magnetic properties of benzo[e][1,2,4]triazinyls (Blatter-type radicals) resulted in a rapidly growing interest in applications of such open-shell systems in emerging technologies. The increasing demand for stable radicals with tailored properties drives development of synthetic methods. In this context we have demonstrated several synthetic strategies, such as anionic, radical, aza-Pschorr, and Mallory-type photocyclization, which allow for a formal “docking” of the 1,4-dihydro[1,2,4]triazin-4-yl fragment with its e and f edges to larger polycyclic aromatics leading to p-delocalized paramagnetic sub-nanographenes. The new synthetic methods were used to access unprecedented classes of paramagnetic liquid crystals, axially chiral radicals, and diradicals.

    Bio

    Piotr Kaszynski is a Professor of Chemistry at the Centre of Molecular and Macromolecular Studies of Polish Academy of Sciences and University of Łódź in Poland. He received his M.Sc. degree from Warsaw Polytechnic in Poland at 1985, Ph.D. degree in Organic Chemistry in 1991 (University of Texas at Austin), and habilitation in 2007 (University of Łódź). He spent two years at Caltech as a postdoctoral fellow working in the area of organic magnetic materials, before joining Vanderbilt University in Nashville, TN, USA in 1993. In 2015 he moved the bulk of his research program to Polish Academy of Sciences, while maintaining ties with Middle Tennessee State University in USA. His research involves boron clusters and stable radicals and is focused on the design, synthesis and characterization of organic materials for electrooptical, molecular electronics, photovoltaic and spintronic applications and for studying of molecular magnetism in solid-state and liquid crystalline media. He has published over 200 original papers, and several book chapters and reviews. 

  • Head shot of speaker
    Sep 27, 2024 - 1:10 PM
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    Location
    1352 Gilman Hall

    Hosted by: Wenyu Huang

    Title: "Polymers on metal nanoparticles: from surface coverage to catalysis"

    Abstract: 

    Loading catalytic metals on polymer supports to produce “soluble” catalysts has long been used in catalysis. Harnessing synergies at the interface of polymers and inorganic catalytic components is, however, still challenging. Our group works on developing new synthetic methodologies of hybrid polymer/inorganic materials (metal ions and nanoparticles) with well-defined chemical compositions, nanostructures and synergetic functionalities. We seek to understand the role of polymers in tuning the interface of hybrid materials in order to control their accessibility and essentially tune the catalytic properties of inorganic components. My talk will show our recent effort on, i) the development of new synthetic methods to prepare polymer-tethered nanoparticles and explore the role of polymer tethers to design the surface patterning; and ii) control over the in the stabilizing metal nanoparticles in electrocatalysis and accessibility of nanoparticles or metal ions that are incorporated in polymer frameworks. I will introduce the concept of polymer-tethered nanoparticles and the use of polymer ligands to control the surface patterning of gold nanoparticles and nanorods. The add-on functionality of polymer to hybrid materials will be deliberated in the context of electrocatalytic conversion of CO2. The incorporation of metal ions within polymeric frameworks as functional metallopolymers to mimic natural metalloenzymes will be discussed at the end.

    Bio:

    Jie He is currently a Professor of Chemistry and Polymer Program at the University of Connecticut. His group focuses on the design of hybrid materials of polymers and inorganic materials (metal ions, clusters, and nanoparticles) being capable of catalyzing the activation of small molecules as inspired by nature. 

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