Large-scale synthesis of polyynes with commercial laser marking technology  

作　　者：Liang Fang Yanping Xie Shujie Sun Wei Zi 房良;解燕平;孙书杰;訾威(Collaborative Innovation Center of Henan Province for Energy-Saving Building Materials,Xinyang Normal University,Xinyang 464000,China;Analysis&Testing Center,Xinyang Normal University,Xinyang 464000,China)

机构地区：[1]Collaborative Innovation Center of Henan Province for Energy-Saving Building Materials,Xinyang Normal University,Xinyang 464000,China [2]Analysis&Testing Center,Xinyang Normal University,Xinyang 464000,China

出　　处：《Chinese Physics B》2022年第12期425-428,共4页中国物理B（英文版）

基　　金：Project supported by the Nanhu Scholars Program for Young Scholars of Xinyang Normal University

摘　　要：The space-confined synthesis method has been an efficient way for the preparation of linear carbon chains.However,the large-scale preparation of linear carbon chains still faces many challenges due to the lack of methods for the large-scale synthesis of precursors,such as short carbon chains(polyynes),and regulation technology for the transport of reactants in one-dimensional space.Here,we report a facile method for the rapid preparation of polyynes in large quantities using a commercial laser marking machine.Spectroscopic characterizations show that a large number of polyynes,such as C_(8)H_(2),C_(10)H_(2),C_(12)H_(2),and C_(14)H_(2),can be produced by ablating the graphite plate immersed in the organic liquid using a laser marking machine.The results of in situ Raman spectroscopy investigation of C_(2n)H_(2)-filled single-walled carbon nanotubes further confirm that a variety of polyyne molecules are synthesized.Meanwhile,in situ Raman spectroscopy also shows that the local heating treatment can accelerate the filling process of C_(2n)H_(2)into one-dimensional channels.This work provides new insights into the study of linear carbon chains and space-confined synthesis methods.

关 键 词：POLYYNES carbon chains single-walled carbon nanotubes 

分 类 号：TQ127.11[化学工程—无机化工] TN24[电子电信—物理电子学]