Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds
206 p.
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2011
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| Online Access: | https://hdl.handle.net/10356/47503 |
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sg-ntu-dr.10356-475032023-02-28T23:38:06Z Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds Peng, Hong Mei Richard David Webster School of Physical and Mathematical Sciences DRNTU::Science::Chemistry 206 p. Previous research results have demonstrated that vitamin E can undergo a series of reversible electron-transfer and proton-transfer reactions affording unusual long-lived phenoxonium cations under electrochemical oxidation. The purpose of the sequential study is to investigate what structural aspects of a-tocopherol are important in increasing the lifetime of its related phenoxonium cation. In chapter 1, a number of phenolic compounds have been synthesized and their electrochemical behavior tested by CV (cyclic voltammetry) and CPE (controlled potential electrolysis) experiments. In general, these phenols can be classified into two classes. Class 1 compounds can be oxidized to give long-lived phenoxonium cations, which showed similar electrochemical behavior to a-tocopherol. For class 2 compounds, the corresponding phenoxonium cations are voltammetrically undetectable at slow scan rates, and undergo further rapid reactions or convert into p-quinones. The methyl group in the aromatic ring and the chromanol structure of vitamin E played crucial roles in stabilizing phenoxonium cations. In addition, in chapter 2, several heterocyclic ethers without free hydroxyl groups have been synthesized and examined as model compounds to study the one-electron oxidation process of vitamin E by a series of electrochemical methods (CV and CPE) and spectroscopic experiments (UV-vis and FTIR). DOCTOR OF PHILOSOPHY (SPMS) 2011-12-27T08:30:50Z 2011-12-27T08:30:50Z 2009 2009 Thesis Peng, H. M. (2009). Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/47503 10.32657/10356/47503 Nanyang Technological University application/pdf |
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Singapore Singapore |
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DRNTU::Science::Chemistry Peng, Hong Mei Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds |
| description |
206 p. |
| author2 |
Richard David Webster |
| author_facet |
Richard David Webster Peng, Hong Mei |
| format |
Theses and Dissertations |
| author |
Peng, Hong Mei |
| author_sort |
Peng, Hong Mei |
| title |
Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds |
| title_short |
Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds |
| title_full |
Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds |
| title_fullStr |
Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds |
| title_full_unstemmed |
Synthesis, catalysis, and electrochemistry of some organic and organometallic compounds |
| title_sort |
synthesis, catalysis, and electrochemistry of some organic and organometallic compounds |
| publishDate |
2011 |
| url |
https://hdl.handle.net/10356/47503 |
| _version_ |
1759854316333563904 |