Studies of high-energy intermediates formed in peroxyoxalate chemiluminescence (PO-CL) reactions /
The characteristics of light emitted from the five types of peroxyoxalate chemiluminescence (PO-CL) reaction pathways were studied. Three PO-CL reaction pathways (direct CL reaction, base-catalyzed nucleophilic CL reaction, and acid-base CL reaction) occur competitively when all CL reagents (oxalate...
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| Format: | Thesis Book |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
2000.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=731980881&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | The characteristics of light emitted from the five types of peroxyoxalate chemiluminescence (PO-CL) reaction pathways were studied. Three PO-CL reaction pathways (direct CL reaction, base-catalyzed nucleophilic CL reaction, and acid-base CL reaction) occur competitively when all CL reagents (oxalate ester, H₂O₂, perylene, or/and imidazole) are mixed in the reaction cell simultaneously. When aryl oxalate reacts with imidazole without H₂O₂, 1,1'-oxalyldiimidazole (ODI) that is a new reagent of PO-CL reaction is produced. When ODI reacts with H₂O₂ in the presence of perylene, high CL intensity having very short half-life was observed (ODI CL reaction). When each oxalate reacts with imidazole in the presence of perylene without H₂O₂, low CL intensity was measured (intramolecular nucleophilic CL reaction). Of the reactions studied, three relatively fast reactions having high intensity and short half-life (direct CL reaction, acid-base CL reaction, and ODI CL reaction) appear to be useful in quantitative and qualitative analyses of PAHs. The base-catalyzed nucleophilic CL reaction has such a long half-life that it could be commercialized as a light source. The intramolecular nucleophilic CL reaction can be used to understand in detail the reaction mechanism between aryl oxalate and various nucleophiles. |
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| Item Description: | Vita. "Major Subject: Interdisciplinary Engineering". |
| Physical Description: | xvi, 123 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilm Inc. |
| Bibliography: | Includes bibliographical references (leaves 117-119). |