959214-52-9Relevant academic research and scientific papers
Fabrication of poly(p-phenylenebenzobisoxazole) film using a soluble poly(o -alkoxyphenylamide) as the precursor
Fukumaru, Takahiro,Saegusa, Yusuke,Fujigaya, Tsuyohiko,Nakashima, Naotoshi
, p. 2088 - 2095 (2014)
Poly(p-phenylenebenzobisoxazole) (PPBO) is a polymer having the most excellent thermal properties among the organic polymers reported to date, and the design and the preparation of PPBO with the desired shape and form are expected to provide novel PPBO-ba
Nanoparticle-catalyzed green chemistry synthesis of polybenzoxazole
Shen, Mengqi,Yu, Chao,Guan, Huanqin,Dong, Xiang,Harris, Cooro,Xiao, Zhen,Yin, Zhouyang,Muzzio, Michelle,Lin, Honghong,Robinson, Jerome R.,Colvin, Vicki L.,Sun, Shouheng
supporting information, p. 2115 - 2122 (2021/02/16)
Enabling catalysts to promote multistep chemical reactions in a tandem fashion is an exciting new direction for the green chemistry synthesis of materials. Nanoparticle (NP) catalysts are particularly well suited for tandem reactions due to the diverse surface-active sites they offer. Here, we report that AuPd alloy NPs, especially 3.7 nm Au42Pd58 NPs, catalyze one-pot reactions of formic acid, diisopropoxy-dinitrobenzene, and terephthalaldehyde, yielding a very pure thermoplastic rigid-rod polymer, polybenzoxazole (PBO), with a molecular weight that is tunable from 5.8 to 19.1 kDa. The PBO films are more resistant to hydrolysis and possess thermal and mechanical properties that are superior to those of commercial PBO, Zylon. Cu NPs are also active in catalyzing tandem reactions to form PBO when formic acid is replaced with ammonia borane. Our work demonstrates a general approach to the green chemistry synthesis of rigid-rod polymers as lightweight structural materials for broad thermomechanical applications.
