Application of NMR Technique to Investigate Environment Control under the Properties of Chain/Ring Tautomerism in 1,3-Dicarbonyl Compounds and Reaction Mechanism and Rate with Phenylmaleimide

• Main Authors: Jiu-Tai Wei, 魏久泰
• Other Authors: Hsi-Wei Jia
• Format: Others
• Language: en_US
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/83921260245098054764

碩士 === 中原大學 === 化學研究所 === 102 === In recent years the rapid development of lithium-ion batteries have been widely used in many electronic devices, such as mobile phones, notebook computers, motor vehicles and electric cars. But the explosion of the battery when the event is heard, so the annual production capacity of more than 5 billion lithium ion batteries speaking, to resolve the security issues will be a priority. Improve safety lithium ion batteries, can be divided into electronic design, mechanical design and materials design, materials, design safety of additives for the BMI (4,4'-Bismaleimidodi-phenylmethane) and BTA (Barbituric Acid) conducting polymer polymerization. The main study of this research is to investigate the structure of PMI (Phenylmaleimide) and has a β-dicarbonyl compounds (Acetylacetone and Dimedone) carried out after the reaction, which Michael Addition and Polymerization[1]. In the beginning of the first analysis with β-dicarbonyl compounds characteristics. Then,on synthesis reaction by changing the solvent (CHCl3, DMF, DMSO and NMP) as well as the experimental temperature (50 ° C and 90 ° C), investigate the solvent effects and temperature effects brought about. Traditionally focused on polymer synthesis and performance of its functions, and there is no depth to its micro-structure of this polymer using NMR techniques to carry out the molecular structure identification, and by changing the reaction itself, solvents and temperature do to get the macro-control the product, in order not to do for this polymerization modified micro-control, and applied in different fields. Using 1H, 13C, DEPTQ, COSY, HSQC, HMBC and other related procedures identified in the qualitative pulse will be starting from PMI, Acetylacetone, Dimedone structure to confirm whether the sample is correct. And use the one-dimensional NMR measurements of signal points of each component in proportion to speculate that the polymer during polymerization reaction product volume growth and decline, in order to speculate on the chemical reaction kinetics behavior and the possible reaction mechanisms. NMR given the amount of information at the same time provides investigate the comparative reactivity of reactants. And planning BMI and β-dicarbonyl compounds in inferior different solvent, temperature and time different reaction conditions for the synthesis of the product polymer, in order to explore the different conditions for the reaction kinetics on the diversity of behavior in order to interest the subsequent deployment of a complete product based on ratios such reference. This technique using magnetic resonance measurements accompanied by other techniques with the BMI-β-dicarbonyl compounds conducting polymer molecular structure identification, and then derive the possible reaction mechanism, so the process can be improved, the impact of the BMI-BTA available in different environments the reaction mechanism and product analysis.