文献类型：期刊文献

英文题名：Boron-containing arylacetylene polymers as a novel carbon precursor: Synthesis, thermal curing and carbonisation

作者：Guo, Kangkang[1,2];Wang, Hudong[1];Li, Ping[2];Zhu, Yaping[1];Wang, Fan[1];Qi, Huimin[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：160

起止页码：314

外文期刊名：MATERIALS LETTERS

收录：;EI(收录号：20153501225466);WOS:【SCI-EXPANDED(收录号:WOS:000364880300080)】；

基金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China, China (Grant no. 90816021).

语种：英文

外文关键词：Carbon materials; Structural; Polymers; Boron; Arylacetylene

摘要：A novel boron-containing carbon precursor with high yield and crystallisation (i.e., boron-containing arylacetylene polymers (PBAs)) was synthesised by the polycondensation reaction between arylethynyl Grignard reagent and boron trichloride-pyridine complexes. The precursor structures, curing behaviour and carbonisation were investigated. An aromatic ring is formed by polymerisation of a triple bond during the curing reaction of PBAs, which resulted in a significantly higher char yield (i.e., as high as nearly 80%) at 900 degrees C for the cured PBAs. The boron is chemically bonded to carbons of the PBAs precursor, which reduces the activation energy of the dissociation and rearrangement of the carbon-carbon bonds and promotes the change in the hybridisation of carbon atoms from sp(3) to sp(2). (C) 2015 Elsevier B.V. All rights reserved.