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Dissertations / Theses on the topic 'FT-IR and 1H NMR'

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Published: 7 June 2025

Last updated: 2 August 2025

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1

Chen, De. "Examination of Fat Oxidation Products by FT-NMR & FT-IR." TopSCHOLAR®, 1993. https://digitalcommons.wku.edu/theses/2213.

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Edible oils are easily oxidized when used for frying. Oxidation originates with double bonds present in unsaturated fatty acids. A new NMR method is presented which offers potential for determining the products of oil oxidation. High resolution fourier transform nuclear magnetic resonance (FT-NMR) and fourier transform infrared (FT-IR) spectroscopy have found increasing use in biochemistry. One pure fat, trioleoylglycerol, was heated at 160°C in the presence of air Samples were taken for FT-NMR and FT-IR analyses at 4, 10. 20. 25, 35, 50, 70 and 100 hours. Proton, Carbon-13 and several types o

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2

Chen, Fu-Tseng Andy. "Molecular Dynamics in the Liquid Phase by FT-NMR, FT-IR and Laser Raman Lineshape Analysis." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc330608/.

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Nuclear magnetic resonance (NMR) provides a convenient probe for the study of molecular reorientation in liquids because nuclear spin-lattice relaxation times are dependent upon the details of molecular motion. The combined application of Raman and Infrared (IR) lineshape analysis can furnish more complete information to characterize the anisotropic rotation of molecules. Presented here are the studies of NMR relaxation times, together with Raman/IR Mneshape analysis of the solvent and temperature dependence of rotational diffusion in 1,3,5-tribromobenzene and 1,3,5-trifluorobenzene. In these

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3

Srinivasan, Gokulakrishnan. "Solid-state NMR and FT IR studies on chromatographic column materials." Berlin Logos-Verl, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2704429&prov=M&dok_var=1&dok_ext=htm.

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4

Auger, Michèle. "Deuterium NMR and high-pressure FT-IR studies of membranes: Anesthetic-lipid interactions and molecular dynamics in lipid bilayers." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5842.

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The interactions of the local anesthetic tetracaine with multilamellar dispersions of dimyristoylphosphatidylcholine (DMPC) containing cholesterol have been investigated by deuterium nuclear magnetic resonance ($\sp2$H NMR). $\sp2$H NMR spectra of tetracaine indicate that the location of the anesthetic in the cholesterol-containing DMPC bilayers differs from that in pure phosphatidylcholine bilayers, the anesthetic being located closer to the lipid-water interface in the former system. Moreover, the incorporation of the anesthetic into DMPC bilayers with or without cholesterol results in a red

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5

Lindh, Erik L. "Cellulose-water interaction: a spectroscopic study." Doctoral thesis, KTH, Tillämpad fysikalisk kemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-199200.

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The human society of today has a significantly negative impact on the environment and needs to change its way of living towards a more sustainable path if to continue to live on a healthy planet. One path is believed to be an increased usage of naturally degradable and renewable raw materials and, therefore, attention has been focused on the highly abundant biopolymer cellulose. However, a large drawback with cellulose-based materials is the significant change of their mechanical properties when in contact with water. Despite more than a century of research, the extensively investigated intera

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6

Tungulin, Dmitry. "Towards NIR emission: 2-(1H-tetrazol-1-yl)pyridine as versatile ligand for the synthesis of two new families of cationic and neutral Ir(III) complexes." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/11948/.

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In the last decades, cyclometalated Ir(III) complexes have drawn a large interest for their unique properties: they are excellent triplet state emitters, thus the emission is phosphorescent in nature; typically high quantum yields and good stability make them good candidates for luminescent materials. Moreover, through an opportune choice of the ligands, it is possible to tune the emission along the whole visible spectra. Thanks to these interesting features, Ir(III) complexes have found different applications in several areas of applied science, from OLEDs to bioimaging. In particular, regard

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7

Contro, Janine [UNESP]. "Síntese e caracterização espectroscópica de novos vanadosilicatos utilizando templates orgânicos derivados de piperidinas." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/137850.

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Submitted by Janine Contro null (janinecontro@yahoo.com.br) on 2016-04-07T18:56:18Z No. of bitstreams: 1 DISSERTAÇÃO - JANINE.pdf: 7764303 bytes, checksum: a8fc2422ef9a7fc1ce8eef29ce54e487 (MD5)<br>Approved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-04-08T12:32:48Z (GMT) No. of bitstreams: 1 contro_j_me_sjrp.pdf: 7764303 bytes, checksum: a8fc2422ef9a7fc1ce8eef29ce54e487 (MD5)<br>Made available in DSpace on 2016-04-08T12:32:48Z (GMT). No. of bitstreams: 1 contro_j_me_sjrp.pdf: 7764303 bytes, checksum: a8fc2422ef9a7fc1ce8eef29ce54e487 (MD5) Previo

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8

Kelley, John J. "The Synthesis and Characterization of Imidazolium Lithium Phthalocyanines." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1221535816.

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9

Gustafsson, Christina. "Solid state characterisation and compaction behaviour of pharmaceutical materials." Doctoral thesis, Uppsala University, Department of Pharmacy, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-509.

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<p>In this thesis, factors important in tableting operations and for tablet properties have been studied and characterised by different spectroscopic techniques as well as by some more conventionally used particle characterisation techniques. The spectroscopic techniques solid-state NMR, FT-IR and NIR spectroscopy, proved to be valuable tools in the estimation of particle and tablet properties, offering both specificity and sensitivity in the measurements. Because of the large amount of information obtained in a spectrum, multivariate data analysis was in some cases used in the processing of t

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10

Atadana, Frederick Williams. "Catalytic Pyrolysis of Cellulose, Hemicellulose and Lignin Model Compounds." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/31251.

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<p>The effect of HZSM-5 catalyst and NaOH pretreatment on the product distribution and bio oil properties from pyrolysis of cellulose, hemicellulose and lignin model compounds was investigated at 450 Â°C. NaOH pretreated and untreated cellulose was pyrolyzed on sand and the HZSM-5 catalysts; VPISU001 HZSM-5, BASF HZSM-5, and Sud-Chemie HZSM-5. The pyrolysis of cellulose on BASF and Sud-Chemie HZSM-5 catalysts increased the yields of the organic liquid fraction, total liquid and char while decreasing the gas yields. However the catalyst decreased the organic and char yields while increasing the

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11

Tarrant, Ryan Carl Allen. "Influence of a Biodegradable Litter Amendment on the Pyrolysis of Poultry Litter." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/35126.

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The effects of adding a biodegradable litter amendment (AmmoSoak), developed from steam exploded corncobs, to poultry litter prior to pyrolysis on the product yields and qualities were investigated. Mixtures of litter and AmmoSoak were pyrolyzed in a bench-scale fluidized bed reactor. The objective of the second phase was to start-up a pilot-scale fluidized bed reactor unit. The poultry litter had a lower higher heating value (HHV), higher moisture, ash, nitrogen, sulfur, and chlorine contents than AmmoSoak. Analysis of the poultry litter indicated a mixture of volatiles, hemicelluloses, cell

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12

Grazier, Jeffery N. "Characterisation of amorphous pharmaceutical materials." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12986.

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Small quantities of amorphous content can have a profound influence on the properties of a material, however their instability means that quantifying amorphous content over time is important for proving the stability of a drug. Quantifying amorphous content in α-lactose monohydrate by solid state 13C CP MAS NMR, has been carried out by use of proton saturation recovery relaxation and differentiating between spectra by partial least squares (PLS), however these techniques have not proved sensitive on their own, this work investigates their sensitivity in combination. Crystalline α-lactose monoh

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13

Höhne, Susanne. "Untersuchungen zur kationischen Polymerisation von Vinylmonomeren des Furans und Thiophens." Doctoral thesis, Universitätsbibliothek Chemnitz, 2006. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200501585.

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In der vorliegenden Arbeit wurde die kationische Polymerisation der heterocyclischen Monomere 2-Vinylfuran, 5-Methyl-2-vinylfuran und 2-Vinylthiophen in der Gegenwart silikatischer Partikel untersucht. Produkte dieser Reaktion sind Polymer/SiO2-Hybridpartikel und lösliche Polymere. Zu ihrer Untersuchung wurden NMR-spektroskopische Verfahren, IR-, UV/Vis-, MALDI TOF-Spektroskopie, Elementaranalyse und GPC angewandt. Damit gelang es, die Struktur der Polymere weitgehend aufzuklären. Der Einfluß der Reaktionsbedingungen auf die Ergebnisse der kationischen Oberflächenpolymerisation wurde untersuch

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14

Polenz, Ingmar. "Neuartige Radikalische Polymerisation von Vinylmonomeren über eine Iminbase / Isocyanat-vermittelte Initiierung." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-84166.

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Gegenstand dieser Arbeit ist die Entwicklung einer neuartigen Initiierungsmethode zur Polymerisation von Vinylmonomeren über die Kombination von gewöhnlichen organischen Isocyanaten und Iminbasen. Der radikalische Charakter dieses Polymerisationstyps wurde durch Copolymerisationsexperimente verifiziert. Mit verschiedenen Iminbase / Isocyanat-Kombinationen als Initiatoren wurde die Homopolymerisation von diversen (Meth)-Acrylaten, Styrol, Acrylnitril und Methacrylnitril untersucht. Parameter, wie die Brutto-Polymerisationsgeschwindigkeitskonstante und die Aktivierungsenergie wurden ermittelt un

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15

Mousavioun, Payam. "Properties of lignin and poly(hydroxybutyrate) blends." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/46668/1/Payam_Mousavioun_Thesis.pdf.

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The Queensland University of Technology (QUT) allows the presentation of a thesis for the Degree of Doctor of Philosophy in the format of published or submitted papers, where such papers have been published, accepted or submitted during the period of candidature. This thesis is composed of Seven published/submitted papers and one poster presentation, of which five have been published and the other two are under review. This project is financially supported by the QUTPRA Grant. The twenty-first century started with the resurrection of lignocellulosic biomass as a potential substitute for petroc

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16

Shukla, A., E. Khan, M. H. D. Bashir Alsirawan, R. Mandal, P. Tandon, and Venu R. Vangala. "Spectroscopic (FT-IR, FT-Raman, and 13C SS-NMR) and quantum chemical investigations to provide structural insights into nitrofurantoin–4-hydroxybenzoic acid cocrystals." 2019. http://hdl.handle.net/10454/17019.

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Yes<br>Cocrystallization is an attractive approach to improving the physicochemical properties of active pharmaceutical ingredients (APIs), which have great potential in drug development. Accordingly, there is a growing need to understand the physicochemical changes that occur upon co-crystallisation. This work focuses on the combined use of spectroscopy and density functional theory (DFT) calculations to understand the molecular structure, hydrogen bond interactions and physicochemical properties of a pharmaceutical cocrystal. Solid-state NMR (ssNMR) spectroscopy can provide detailed molecula

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17

Radimecký, Martin. "Izolace a charakterizace biologicky aktivních polysacharidů buněčných stěn kvasinek." Master's thesis, 2010. http://www.nusl.cz/ntk/nusl-87979.

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18

Tsay, Jenq-Dar, and 蔡政達. "Using FT-IR and 13C-NMR Spectroscopy to Investigate the Synthesis of Barium Titanate Powder by the Citrate Process." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/44439624696855944422.

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博士<br>國立成功大學<br>材料科學及工程學系<br>87<br>In this investigation, FT-IR and 13C-NMR spectroscopy were used to study the synthesis of barium titanate powder by the citrate process. The experimental parameter of initial barium titanium citric solution, the properties and thermal decomposition behaviors of barium titanium citrate (BTC) and barium titanium citric gel, and the sintering behavior and dielectric property of barium titanate were investigated. The stabilization of titanium alkoxide could be achieved by reacting the citric acid only, and it could be affected by the mixing sequence of

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19

Μαζαρακιώτη, Ελένη. "Σύμπλοκες ενώσεις του καδμίου(ΙΙ) και των λανθανιδίων(ΙΙΙ) με οξιμικούς, υδραζονικούς και ετεροκυκλικούς υποκαταστάτες". Thesis, 2013. http://hdl.handle.net/10889/6199.

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Ο αρχικός στόχος της εργασίας μας ήταν η παρασκευή ετερομεταλλικών συμπλόκων Cd(II)/Ln(III) [Ln=λανθανίδιο] για να μελετηθούν οι φωτοφυσικές τους ιδιότητες. Διάφορα συστήματα αντιδράσεων Cd(II)/Ln(III)/οργανικός υποκαταστάτης έδωσαν μόνο ομομεταλλικές ενώσεις Cd(II) ή Pr(III).Χρησιμοποιώντας διάφορα αντιδρώντα Cd(II) και Pr(NO3)3∙6H2O, παρασκευάστηκαν τα ακόλουθα σύμπλοκα: [CdCl2(PhpaoH)]n (1), [Cd(O2CMe)2(NH2paoH)2] (2), [Cd(ΝΟ3)2(tzpy)2] (3), [CdI2(tzpy)2] (4), [Pr(ΝΟ3)3(tzpy)2]∙tzpy (5∙tzpy), [Cd4(NO3)4{(py)2C(H)(O)}4] (6) [(py)2C(H)(O)- είναι το ανιόν της δι-2-πυρίδυλο μεθανόλης που σχημ

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20

Gagnon, Marc-André. "Étude des propriétés de transport dans les hydrogels de curdlan." Thèse, 2009. http://hdl.handle.net/1866/3906.

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Les hydrogels de polysaccharide sont des biomatériaux utilisés comme matrices à libération contrôlée de médicaments et comme structures modèles pour l’étude de nombreux systèmes biologiques dont les biofilms bactériens et les mucus. Dans tous les cas, le transport de médicaments ou de nutriments à l’intérieur d’une matrice d’hydrogel joue un rôle de premier plan. Ainsi, l’étude des propriétés de transport dans les hydrogels s’avère un enjeu très important au niveau de plusieurs applications. Dans cet ouvrage, le curdlan, un polysaccharide neutre d’origine bactérienne et formé d’unités répéti

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21

Höhne, Susanne. "Untersuchungen zur kationischen Polymerisation von Vinylmonomeren des Furans und Thiophens." Doctoral thesis, 2005. https://monarch.qucosa.de/id/qucosa%3A18406.

Full text

Abstract:

In der vorliegenden Arbeit wurde die kationische Polymerisation der heterocyclischen Monomere 2-Vinylfuran, 5-Methyl-2-vinylfuran und 2-Vinylthiophen in der Gegenwart silikatischer Partikel untersucht. Produkte dieser Reaktion sind Polymer/SiO2-Hybridpartikel und lösliche Polymere. Zu ihrer Untersuchung wurden NMR-spektroskopische Verfahren, IR-, UV/Vis-, MALDI TOF-Spektroskopie, Elementaranalyse und GPC angewandt. Damit gelang es, die Struktur der Polymere weitgehend aufzuklären. Der Einfluß der Reaktionsbedingungen auf die Ergebnisse der kationischen Oberflächenpolymerisation wurde unter

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22

Polenz, Ingmar. "Neuartige Radikalische Polymerisation von Vinylmonomeren über eine Iminbase / Isocyanat-vermittelte Initiierung." Doctoral thesis, 2011. https://monarch.qucosa.de/id/qucosa%3A19676.

Full text

Abstract:

Gegenstand dieser Arbeit ist die Entwicklung einer neuartigen Initiierungsmethode zur Polymerisation von Vinylmonomeren über die Kombination von gewöhnlichen organischen Isocyanaten und Iminbasen. Der radikalische Charakter dieses Polymerisationstyps wurde durch Copolymerisationsexperimente verifiziert. Mit verschiedenen Iminbase / Isocyanat-Kombinationen als Initiatoren wurde die Homopolymerisation von diversen (Meth)-Acrylaten, Styrol, Acrylnitril und Methacrylnitril untersucht. Parameter, wie die Brutto-Polymerisationsgeschwindigkeitskonstante und die Aktivierungsenergie wurden ermittelt un

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