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 183 for “"Chemiluminescence"”.
-
Mechanisms of Chemiluminescence
3-Acetyl-4,4-dimethyl-1,2-dioxetane (1) was prepared by the base-catalyzed rearrangement of 4-bromo-3-hydroxy-3,5,5-trimethyl-1,2-dioxolane. Thermal decomposition of this dissymmetric dioxetane to acetone and methylglyoxal proceeds with an activation energy of 26.0 (+OR-) 1 kcal/mol and a log A of …
-
Chemiluminescence of Dimethyldioxetanone
Dimethyldioxetanone undergoes two distinct thermal reactions which generate electronically excited states. The unimolecular decomposition at 30.0(DEGREES)C produces excited singlet and triplet acetone, with efficiencies of 0.1 and 1.5% respectively. The composite activation energy for formation of …
-
The chemiluminescence of lucigenin.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1969. Ph.D.
-
CLINICAL APPLICATIONS OF CHEMILUMINESCENCE DETECTION
<p>This dissertation evaluates the potential of chemiluminescence analysis for two types of clinical applications: (1) rapid analysis with a flow injection system which consumes small reagent volumes (25 (mu)L) and (2) a new approach to chemiluminescence immunoassay.</p><p>The first application …
-
Direct Chemiluminescence From Secondary Peresters
… peresters of 1 were generated in situ and the chemiluminescence observed from the decomposition of the peresters was studied. The quantum yield of chemiluminescence was very low in all cases, and seemed to vary inversely with the strength of the alpha carbon-hydrogen bond. The peresters were …
-
Chemiluminescence and photoluminescence of ruthenium chelates.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1968. Ph.D.
-
Studies of the chemiluminescence of luminol.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1969. Ph.D.
-
The Chemiluminescence of Benzofuran-2(3H)-Ones
… to definethe conditions required for chemiluminescence, to elucidate thenature of the products from the chemiluminescent reactions, andto propose a mechanism to account for light emission.
-
Analytical Chemiluminescence in Microporous Membrane Flow Cells
Microporous membrane chemiluminescence (CL) flow cells are presented as an advantageous method for chemical reagent and analyte mixing in continuous flow. The method adds simplicity, significant reagent economy and minimal sample contamination to the conventional advantages of analytical CL …
-
Application of Microporous Membranes to Chemiluminescence Analysis
… using the luminol-cobalt (II)-hydrogen peroxide chemiluminescence system. The limit of detection for cobalt(II) is about 10('-10) M (10 parts per trillion); typical precision is (+OR-) 3%. The advantages of using microporous membranes for chemiluminescence analysis are discussed and possible …
-
CHEMILUMINESCENCE ANALYSIS BASED ON TWO PHASE REACTANT SYSTEMS
… is proposed and demonstrated. Two Phase Chemiluminescence utilizes an immobilized reagent bulk phase and a sample phase which contains the analyte. The analyte is permitted to diffuse into the reagent phase under controlled conditions. A chemiluminescent reaction occurs in the reagent …
-
Preparation and Chemiluminescence of Cyclopropyl-Substituted Malonyl Peroxides
… hydrogen peroxide with the parent malonic acids. Chemiluminescence is observed when the cyclopropyl-substituted malonyl peroxides, 1 and 2, are heated in the presence of added aromatic fluorescers. The chemiluminescence is explained by the activated CIEEL mechanism with the aromatic fluorescer and …
-
Investigations and Applications of Metal Ion Enhanced Chemiluminescence
Development of an HPLC detector for amino acids based on the suppression of the Co(II) enhanced luminol reaction is presented in this work. Compared to the classical ninhydrin reaction, this method is faster, can be run at room temperature without thermostatting, can determine secondary amino acids …
-
Miniaturised analytical systems with chemiluminescence detection for environmental applications
… details the use of microfluidic devices and chemiluminescence detection in order to develop a portable method of analysis for measuring chemical species in the environment.Chapter 1 outlines microfluidic technology, including fabrication techniques, fluid manipulation and mixing within the …
-
Characterisation of a chemiluminescence ozone monitor for volcanic applications
… be solved by using the 'antiquated' technique of chemiluminescence (CL) O3 monitors since these devices have been shown to exhibit no interference from trace gases contained in volcanic plumes - in particular SO2. In this thesis, a compact and mobile (backpack-size, 10kg) CL monitor is introduced …
-
DETERMINATION OF TRACE METALS BY lON-CHROMATOGRAPHY WITH CHEMILUMINESCENCE DETECTION
… based on the highly sensitive luminol-peroxide chemiluminescence (CL) reaction have been developed and are described. A simple cation-exchange chromatographic system was developed and used to separate cobalt from other metal ions. These cobalt ions were detected using an optimised …
-
Peroxyoxalate chemiluminescence and capillary electrophoresis : new methods for bioanalytical chemistry
… two potentially powerful techniques: 1) Chemiluminescence-a spectroscopic technique in which the generation of fluorescence from the electronically excited state of the molecule is provided by a chemical reaction and 2) Capillary electrophoresis-a separation technique in which small ions …
-
Analytical Applications of Catalysis and Suppressed Catalysis of Luminol Chemiluminescence
Luminol chemiluminescence (CL) has been used in a variety of determinations of species which catalyze the luminol CL reaction. The research reported here examined analytical applications related to catalysis of the luminol CL reaction with respect to three primary areas.
-
The design and application of an automated luminometer for chemiluminescence
… of reaction conditions and quantitation of the chemiluminescence observed during the oxidation of NADH by horseradish peroxidase in the presence of eosin. The luminometer design incorporates a computer controlled reagent induction system, pulse counting detector and real time display of …
Page 1 of 10