Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"IRMPD"”.
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Studies Toward A Detailed Understanding Of The Intrinsic Properties Of Nucleic Acid Constituents: Gas-Phase Conformations, Energetics, And Glycosidic Bond Stability
… by infrared multiple photon dissociation (IRMPD) action spectroscopy and theoretical calculations. The IRMPD spectroscopy experiments were performed using a Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) coupled to a free electron laser or a OPO/OPA laser system to …
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Noncovalent Interactions Between Alkali Metal Cation And Aza/thia-Crown Macrocycles: Mass Spectrometric Techniques And Theoretical Studies
… cations. Infrared multiple photon dissociation (IRMPD) action spectroscopy and energy-resolved collision-induced dissociation (CID) techniques were used in conjunction with theoretical electronic structure calculations to characterize the structures, binding interactions, and stability of …
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Theoretical And Experimental Studies Of Noncovalent Metal Cation Binding And Base Pairing Interactions Of Cytosine And Modified Cytosines
… The infrared multiple photon dissociation (IRMPD) action spectroscopy of five alkali metal cation-cytosine complexes, M<sup>+</sup>(cytosine), where M<sup>+</sup> = Li<sup>+</sup>, Na<sup>+</sup>, K<sup>+</sup>, Rb<sup>+</sup>, and Cs<sup>+</sup>, are examined using a Fourier transform ion …
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Development of an electrospary ionization source and vacuum interface for guided ion beam tandem mass spectrometry experiments: structural and energetic effects in the molecular recognition of amino acids by 18-crown-6
… and coworkers is overestimated. </p> <p>The IRMPD action spectroscopy of (B)H+(18C6) complexes are examined using a FT-ICR MS coupled to a free electron laser. The structural information elucidated here supports the experimental measurements of the absolute 18C6 binding affinities of the …
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Vibrational and anion photoelectron spectroscopy of transition metal clusters
… via (far-)infrared multiple photon dissociation (IRMPD) spectroscopy, more suitable to obtain structural information on the studied complexes, are reported. The investigation on CoArn+ readdresses the question on the nature of the interaction between the metal cation and the rare gas atom by …
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Automated data acquisition and analysis for high-resolution Fourier transform mass spectrometry of proteins and peptides
… which were then fragmented in the ICR cell using IRMPD. In another method, broad 20-60 m/z wide sections of the mass spectrum of a complex mixture were fragmented in parallel and this multiplexed fragment data was analyzed using an iterative algorithm. In the third method, samples were analyzed …
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The versatile use of Guanidiniocarbonylpyrroles : from self-assembly to peptide recognition
… ion cyclotron resonance mass spectrometry“ (IRMPD-FT-ICR MS). Solche Studien ermöglichen möglicherweise in Zukunft das gezielte Design von supramolekularen Bausteinen. Der bioorganische Teil meiner Arbeit setzte sich aus drei Einzelprojekten zusammen. So synthetisierte ich durch eine …
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Synthese und Screening einer kombinatorischen Rezeptorbibliothek für biologisch relevante Tetrapeptide
… Rezeptor in der Gasphase mit Hilfe von FT-ICR IRMPD ESI-MS durchgeführt. Darüber hinaus wurden in vitro Untersuchungen zur Inhibierung der Fibrillenbildung der Amyloid Proteine A (1-42) und A (1-40) mit ausgewählten Rezeptoren durchgeführt. Für die kinetische und quantitative Inhibierung der …
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Thermochemical differences in lysine and lysine-homolog containing oligopeptides: Determination of basicity and gas-phase structure through mass spectrometry, infrared spectroscopy, and computational chemistry
<p>The data presented in this thesis is a comprehensive study on the nature of peptide structure and how subtle and systematic changes in sequence and sidechain affect the basicity, ion stability, and conformation of a peptide. The peptides characterized were acetylated polyalanine di-, tri-, and …