Synthesis of Block Copolymers Containing Carbazolevinylenes and Phenylenevinylenes by Ring-Opening Metathesis Polymerization and Their Properties and Characterization

• Main Authors: Ching-Ju Liu, 劉靜茹
• Other Authors: Chin-Yang Yu
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/prah7c

碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 107 === This thesis described the synthesis and characterization of homopolymers, block copolymers and random copolymer containing carbazolevinylenes and phenylenevinylenes by ring-opening metathesis polymerization of the corresponding cyclic monomers using the third-generation Grubbs catalyst. The molar ratio of carbazolevinylenes is fixed and changed the molar ratio of phenylenevinylenes. Three kinds of the block copolymers with different molar ratios are prepared via sequential ring-opening metathesis polymerization. In order to control the molecular weight and the narrow polydispersity, the third-generation Grubbs catalyst with high activity and cyclic monomer with high ring strain were chosen. The polymers molecular weight and polydispersity were determined by gel permeation chromatography. The characterization of the individual blocks including carbazolevinylenes and phenylenevinylenes were confirmed by 1H nuclear magnetic resonance spectroscopy. The optical, thermal and electrochemical properties of the polymers were investigated by UV-Vis absorption spectroscopy, photoluminescence spectroscopy, thermogravimetric analysis, differential scanning calorimeter and cyclic voltammetry, respectively. The morphology of polymer thin films was experimented by atomic force microscopy.