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.
Results
Showing 1 to 20 of 216 for “"IR spectroscopy"”.
-
Ultrafast 2D IR spectroscopy of membrane peptide systems
… between the intercellular and extracellular environment, playing a critical role in numerous biological processes. Recent research has challenged the long-standing "fluid mosaic model," representing membranes as densely packed, heterogeneous environments. Within these complex membranes are …
-
Studies of biofluid analysis using 2D-IR spectroscopy
… the application of two-dimensional infrared (2D-IR) spectroscopy is evaluated to provide a quantitative analysis of the protein content of blood serum. The foremost challenge is obtaining protein measurements in physiologically relevant solvents as the most informative infrared peak relating to …
-
IR Spectroscopy Study of silver and Copper Nano-films
… and the Surface-Enhanced Infrared Absorption (SEIRA) of CO on these metal films. During both the deposition of the metal films onto MgO(001) and gas exposure to the metal films at low temperatures (< 100 K) in Ultra High Vacuum (UHV), infrared spectra were captured in situ in transmission or …
-
Temperature-jump 2D IR spectroscopy to study protein conformational dynamics
… (T-jump) two-dimensional infrared spectroscopy (2D IR) is developed, characterized, and applied to the study of protein folding and association. In solution, protein conformational changes span a wide range of timescale from nanoseconds to minutes. Ultrafast 2D IR spectroscopy …
-
Computational methods for cancer diagnosis and prognosis from FT-IR spectroscopy data
… pathology using fourier transform infrared (FT-IR) spectroscopy imaging. We employ tissue microarrays (TMAs) to record IR imaging data and adopt elaborated computational and analytical algorithms and statistical methods to recognize patterns and to construct robust systems. We firstly suggest a …
-
Spectra at speed: neural force fields for IR spectroscopy in ionic liquids
Ionic liquids (ILs) are salts composed entirely of ions and often remain liquid near room temperature. Their structural tunability grants unique properties, making them valuable in catalysis, separations, and electrochemical energy storage. Understanding their microscopic structure and dynamics is …
-
2D IR spectroscopy and computational modeling : application to protein folding and binding
… insight into protein folding and binding is indirectly obtained through kinetics experiments that measure reaction rates and reveal how fast populations of stable states interconvert. Two-dimensional infrared spectroscopy (2D IR) is the central tool developed in this thesis for protein dynamics …
-
FT-IR spectroscopy technology, market evolution and future strategies of Bruker Optics Inc.
… the technology and market evolution of FT-IR spectroscopy over its nearly forty year history to aid in determining future product design and marketing strategies for an industry-leading firm, Bruker Optics. As a benchmark, a universal performance metric was developed that combined key …
-
A study of FT-IR spectroscopy for the identification and classifcation of haematological malignancies
… in this thesis was to explore the use of FT-IR spectroscopy, as a complementary clinical tool for haematological laboratory analysis. FT-IR spectra were measured from air-dried and frozen cell lines derived from lymphoma, lymphoid, myeloid leukaemia and normal and chronic lymphocytic …
-
Modeling Ionophore Selectivity in the Gas Phase: IR Spectroscopy of Solvated Metal Ion-Crown Ether Complexes
… non-covalent interactions. Gas-phase cluster spectroscopy offers a suitable avenue to study the role that these non-covalent interactions play in metal ion crown ether systems.
-
Remaining Unperturbed by the Vibrational Response: Probing Vibrational Coupling, Relaxation, and Solvent Effects with 2D IR Spectroscopy
Understanding molecular function first requires an understanding of their native structuresand fluctuations of their environments. One of the most powerful ways to probe the dynamic behavior of molecular systems in solution is through the use of Two-Dimensional Infrared (2D IR) spectroscopy. 2D IR …
-
Investigating the binding mode of azide labelled derivatives of Hoechst 33258 by NMR, UV-Vis and IR spectroscopy
… ligand association and dissociation through 2D-IR spectroscopy. The strategy employed was to synthesise azide-bearing derivatives of the archetypal minor groove binding ligand, Hoechst 33258, with the azide acting as a reporter functional group. Chapter 1 describes both the state of the art, and …
-
Investigation of growth kinetics of self-assembling monolayers by means of contact angle, optical ellipsometry, angle-resolved XPS and IR spectroscopy.
… and with grazing angle total reflection FTIR. Growth of the monolayers from dilute solutions has been monitored and Langmuir isotherm adsorption curves were fitted to experimental data. A saturated film is formed within approximately 5h after immersion in solutions of concentrations ranging …
-
Immobilization of Ru(bpy)(3)(2+) for Electrogenerated Chemiluminescent Sensors and Application of Interdigitated Array Electrodes in Transmission Ft-Ir Spectroscopy
… of water contents using infrared difference spectroscopy. Results demonstrate a complex role for water in mediating the polyanion-cation interactions.
-
Thermal unfolding dynamics of proteins probed by nonlinear infrared spectroscopy
… The spectroscopic tool is nonlinear infrared (IR) spectroscopy of the protein amide I band. Among various nonlinear IR techniques, two-dimensional infrared (2D IR) spectroscopy, which is an IR analogue of 2D NMR, is the most informative. A 2D IR spectrum is obtained from a double Fourier …
-
Study of the ligand effects on the metal-ligand bond in some new organometallic complexes using FT-Raman and -IR spectroscopy, isotopic substitution and density functional theory techniques
… 347, deal with the FT-Raman and –IR spectroscopy on new organometallic complexes, synthesized in the work-groups B-2 (Prof. W. Malisch), B-3 (Prof. W. A. Schenk), D-1 (Prof. H. Werner) and D-4 (Prof. D. Stalke). The FT-Raman spectra recorded at 1064 nm led to very useful and …
-
Membrane and membrane protein dynamics studied with time-resolved infrared spectroscopy
… do not operate in isolation, however. Their function is intimately coupled to their environment; changes in this environment modulate the behavior of the protein. One of the most striking examples of protein-environment coupling is the interaction between membrane proteins and membranes. …
-
Coherent two-dimensional infrared spectroscopy : a study of coupled vibrations
… used in two-dimensional (2D) infrared (IR) spectroscopy, outlines how third-order nonlinear response of a multi-level vibrational system is calculated, and provides a detailed methodology of line shape analysis in 2D spectroscopy. Specific emphasis is given to inherent sensitivity of 2D …
-
The catalytic activity of anodic oxides on aluminum
… on the catalytic activity was examined. IR spectroscopy proved useful for the study of the effect of thermal treatment on the acidity of the oxides. X-ray photoelectron spectroscopy (XPS) was employed to examine the oxide surfaces both before and after use as a catalyst. The acidity of …
-
Fabrication of Hybrid Atomic Force Microscopy Probe for Enhancing Sensitivity of AFM-Infrared Nanoscale Spectroscopy
Atomic force microscopy infrared-spectroscopy (AFM-IR) has emerged as a novel method that combines nanoscale resolution of AFM with IR-spectroscopy. In this technique heat generated by IR absorption within the sample will induce thermal expansion, which is detected by AFM probe, in contact with the …
Page 1 of 11