Self-Assembly and Stabilization of Metal Nanoparticles of Pyridinium and Imidazolium salts

• Main Authors: Jung-Tang Lu, 盧榮堂
• Other Authors: Ivan J. B. Lin
• Format: Others
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/54089936854147714699

博士 === 國立東華大學 === 化學系 === 102 === The present thesis researches describe the properties of new ionic liquid crystals and nanomaterials. This content includes one introduction, four major subjects, and appendixes. Chapter 1 introduces the backgrounds of ionic liquid crystal, N-heterocyclic carbene, and metal nanomaterial. Chapter 2 is mainly on the studies of ionic liquid crystals derived from 4-alkoxypyridines. Their self-assembly behavior in solution is studied using the technique of NMR diffusion order spectra. Chapter 3 studies the preparation of gold nanoparticles (AuNPs) stabilized with two long alkyl chains substituted imidazolium salts. The observations on the stability of AuNPs in chlorinated solvent are characterized by several instruments. These AuNPs capped by longer alkyl chain imidazolium salts in the composite tend to aggregate at low temperature but can be dispersed upon dissolution at higher temperature. Chapter 4 mentions that imidazolium salt stabilized palladium nanoparticles (PdNPs) are treated with three different methods to obtain three capped modes. These three PdNPs are distinguished by several instruments. Chapter 5 provides the results of self-assemble for vinyl, amide-functionalized and normal alkyl chains substituted imidazolium salts in solution. Furthermore, the N-heterocyclic carbene complexes are also employed to study their self-assembly properties in solution.