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Visualizing dynamics using 100 kHz 2D IR spectroscopy and microscopy

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dc.contributor.authorTracy, Kathryn Marie, author
dc.contributor.authorKrummel, Amber T., advisor
dc.contributor.authorLevinger, Nancy E., committee member
dc.contributor.authorSzamel, Grzegorz, committee member
dc.contributor.authorKrueger, David A., committee member
dc.contributor.authorFisk, John D., committee member
dc.date.accessioned2018-09-10T20:04:43Z
dc.date.available2019-09-06T20:04:15Z
dc.date.issued2018
dc.description.abstract2D IR spectroscopy is a nonlinear optical method with the ability to characterize condensed phase chemical systems. It offers information regarding structure and dynamics of chemical systems. Recent efforts have been made to resolve spatially the molecular structure and dynamics of heterogeneous samples, which shows the feasibility of ultrafast 2D IR microscopy. To image more efficiently, we have moved away from the Ti:sapphire based laser systems and OPA systems that operate at one to several kHz typically used in 2D IR spectroscopy. Instead, for the first time we have demonstrated higher repetition rate, 2D IR spectroscopy at 100 kHz. Achieving this higher repetition rate was accomplished by utilizing advances in diode pumped ytterbium oscillators and amplifiers, and is based on an OPCPA utilizing Mg:PPLN followed by DFG in ZGP. Using this system, we have for the first time, demonstrated the interfacing of IR compatible microfluidics with 2D IR spectroscopy to examine the solvatochromic pseudo-halide anion, cyanate in cosolvent environments. This high repetition rate source also provided a path to 2D IR microscopy experiments that explore the dynamics of complex, heterogeneous, chemical systems. We have shown the chemical dynamics in a room temperature ionic liquid microdroplet. Spatially resolved time-dependent 2D IR signals reveal three regions with different chemical dynamics—the bulk, the interface, and a region between the bulk and interface. This demonstration provides proof-of-concept to use 2D IR microscopy on a wide array of additional chemical systems.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.identifierTracy_colostate_0053A_14947.pdf
dc.identifier.urihttps://hdl.handle.net/10217/191357
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relation.ispartof2000-2019
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectultrafast dynamics
dc.subjectultrafast spectroscopy
dc.subjectOPCPA
dc.subject2D IR microscopy
dc.subjectultrafast lasers
dc.subject.lcsh2D IR spectroscopy
dc.titleVisualizing dynamics using 100 kHz 2D IR spectroscopy and microscopy
dc.typeText
dcterms.embargo.expires2019-09-06
dcterms.embargo.terms2019-09-06
dcterms.rights.dplaThis Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
thesis.degree.disciplineChemistry
thesis.degree.grantorColorado State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy (Ph.D.)

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