Controllable Preparation of Chiral Conductive Screw Carbon Fibers by Asymmetric Synthesis Principle

摘要

Owing to theoretical importance of synthesis of chiral conductive screw carbon fibers (CCSCFs)rnand their potential application such as microwave absorption, the controllable preparation ofrnCCSCFs with specific screw diameter and orientation plays important role. Until now to ourrnknowledge, there is no report on the controllable synthesis of CCSCFs. In our laboratory, CCSCFsrnwith controllable screw diameter and orientation have been synthesized at relatively mildrnconditions and higher yield by asymmetric synthesis principle of sterochemistry, nano-copperrnmodified by chiral tartaric acid as catalyst and acetylene as carbon source. The content ofrnCCSCFs in resultant fibers can reach 100%. The screw diameters of fibers can be changed fromrn100nm to 10um. Screw fibers of single orientation (Left-handed) can each 60% of resultant fibersrnnow.