Applications of GUMBOS

Friday, February 2, 2018


Dr. Isiah Warner

Department of Chemistry

Louisiana State University

Hand Lab 1144, 3:30 PMwarner

Abstract:  My research group has been exploring the analytical applications of room-temperature ionic liquids (RTILs) for several years.  Recently, we have extended the range of these materials to include analytical applications of similar solid materials, i.e. organic salts with melting points of solid ionic liquids (25 °C to 100 °C) up to melting points of 250 °C.  To contrast these new materials with RTILs, we have created the acronym, GUMBOS (Group of Uniform Materials Based on Organic Salts).  These GUMBOS have the tunable properties frequently associated with RTILs, including tunable solubility, melting point, viscosity, thermal stability, and functionality.  Thus, when taken in aggregate, these properties allow the production of solid materials which have a wide range of applications in measurement science.  In this talk, I will highlight the applications of GUMBOS which we have recently explored for measurement science, including GUMBOS as sensors, imaging agents, stimuli-responsive materials, and for production of nanoGUMBOS.  In regard to nanoGUMBOS, we believe that our methodology represents an extremely useful approach to production of nanomaterials since our materials are designed and assembled for specific uses, rather than adapted for use as is done for many nanomaterials.  Selected applications, including sensor applications, will be highlighted in this talk.  Particular emphasis will be placed on a novel QCM sensor for measurement of volatile organic compounds with simultaneous molecular weight determination.

Bio:  Professor Isiah Warner is an analytical/materials chemist with more than 350 refereed publications and a dozen pending or acquired patents. He has particular expertise in the area of fluorescence spectroscopy, where his research has focused for more than 38 years. Over the past 20 years, he has also maintained a strong research effort in the areas of organized media, separation science, and more recently in the area of ionic liquid chemistry, particularly as applied to solid phase materials for applications in materials science and nanomaterials. Professor Warner’s interest in educational research developed early in his academic career. His teaching philosophy has focused on the premise that students can learn science if they are able to function at higher levels of Bloom’s ladder and obtain the basic foundation needed for understanding upper level undergraduate and graduate level courses. This belief has led to funding through numerous educational grants. He also notes that mentoring is a major focus of his role as an academician. As a result of these combined efforts, he has guided (directly and indirectly) hundreds of graduate and undergraduate students to successful careers in STEM. Professor Warner’s nationally acclaimed honors give testament to his contributions and commitment to not only his technical field, but also to education and students. He received one of the first Presidential Young Investigator Awards from President Ronald Reagan in 1984 and the Presidential Mentoring Award in 1997 from President William Clinton. He has attained LSU’s highest professorial rank of Boyd Professor and the American Association for the Advancement of Science (AAAS) Lifetime Mentor award (both in 2000) and was soon after distinguished by the Howard Hughes Medical Institute as one of their inaugural HHMI Professors in 2002. More recently, he has received honor as a Royal Society of Chemistry Fellow (2017), National Academy of Inventors Fellow (2017), SEC Professor of the Year (2016), and induction into the American Academy of Arts and Sciences (2016). He has chaired sixty-one (61) doctoral theses and is currently supervising nine (9) others.


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