Novel Polyamide-imides with Nanographenes: Synthesis and Applications for Photoluminescence

• Main Authors: Yi-Ze Wang, 王翼澤
• Other Authors: Jinn-Hsuan Ho
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/e6xzqf

碩士 === 國立臺灣科技大學 === 化學工程系 === 106 === In this study, hexabenzocoronene (HBCs) on polyamide-imide were dispersed in various solvents, and their dispersibility were investigated by UV-Vis and photoluminescence spectra. First, non-coplanar 9, 9-bis (4-aminophenyl) fluorene monomer (BAPF) with hexaphenylbenzene (HPB) was prepared through Suzuki coupling, then polymerized with phenyl hydrogenated tetracarboxylic dianhydride monomer (Ph-HTA) to receive polyamide-imide. Also, copolymerization with non-coplanar monomer (BAPF) was also carried out. All hexaphenylbenzene moieties were oxidatively cyclodehydrogenated with FeCl3 to obtain hexabenzocoronene (also known as nanographene). Second, hexabenzocoronene moieties were confirmed by FT-IR and X-Ray powder diffraction. Glass transition temperatures and thermal degradation temperatures of polymers P2 and P3 were evaluated and compared with other Ph-HTA derived polyamide-imides. And we found that P2 and P3 represented 10% weight loss temperature 462 and 485 Celsius degrees, which were 10 degrees higher than other Ph-HTA derived polyamide-imides. The 10% weight loss temperature of P2 and P3 could be further raised to 470 and 503 degrees after being cyclodehydrogenated into P4 and P5. Third, aggregation and dispersion phenomena of hexabenzocoronene containing homopolymer and copolymer were observed through dispersing in solvents, then confirmed by UV-Vis absorption spectroscopy, photoluminescence spectroscopy and photoluminescence-excitation maps. And we found that hexabenzocoronene on copolymer exhibit better dispersibility and stability.