Synthesis of poly(para-phenylene)(2-isocyano-2-tosylpropane-1,3-diyl), poly(para-phenylene)(2-oxopropane-1,3-diyl) and oligo(cyclopentadienones) via carbonylative coupling of α,α′-dibromoxylene
作者:Robert G. Potter、Thomas S. Hughes
DOI:10.1039/b706807g
日期:——
Poly(para-phenylene)(2-oxopropane-1,3-diyl), a potential precursor of linear graphene, is generated in low yield from hydrolysis of a previously unknown poly(para-phenylene)(2-isocyano-2-tosylpropane-1,3-diyl) generated from inexpensive, commercially available starting materials.
作者:Shuang Ma、Jiajian Gu、Chaojun Lin、Zhixing Luo、Yanpeng Zhu、Jiaobing Wang
DOI:10.1021/jacs.0c08555
日期:2020.9.30
This work describes a synthetic chiral graphenenanoribbon, named supertwistacene 1. It has four superbenzene (HBC) units linearly fused in a helical manner. The structure of 1, 4.3 nm in length, with an end-to-end twist of 117̊, was confirmed by single crystal X-ray diffraction. In contrast to various twistacene compounds and their analogues, 1 has a very stable configuration. It resists thermal isomerization