A robust synthesis route of confined carbyne  

作　　者：Yanghao Feng Wendi Zhang Kunpeng Tang Yingzhi Chen Jiou Zhang Kecheng Cao Weili Cui Lei Shi 

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,Nanotechnology Research Center,Guangdong Basic Research Center of Excellence for Functional Molecular Engineering,School of Materials Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China [2]School of Physical Science and Technology and Shanghai Key Laboratory of High-resolution Electron Microscopy,Shanghai Tech University,Shanghai 201210,China

出　　处：《Nano Research》2024年第7期6274-6280,共7页纳米研究（英文版）

基　　金：supported by the Guangzhou Basic and Applied Basic Research Foundation(No.202201011790);the National Natural Science Foundation of China(No.51902353);the Shanghai Rising-Star Program(No.21QA1406300);the Fundamental Research Funds for the Central Universities,Sun Yatsen University(No.22lgqb03);the Characteristic Innovation Project of Guangdong Provincial Department of Education(No.2022KTSCX001);the State Key Laboratory of Optoelectronic Materials and Technologies(No.OEMT-2022-ZRC-01);the Open Project of Guangdong Province Key Lab of Display Material and Technology(No.2020B1212060030).

摘　　要：The unique mechanical,optical,and electrical properties of carbyne,a one-dimensional allotrope of carbon,make it a highly promising material for various applications.It has been demonstrated that carbon nanotubes(CNTs)can serve as an ideal host for the formation of confined carbyne(CC),with the yield being influenced by the quality of the carbon nanotubes for confinement and the carbon source for carbyne growth.In this study,a robust synthesis route of CC within CNTs is proposed.C70 was utilized as a precursor to provide an additional carbon source,based on its ability to supply more carbon atoms than C60 at the same filling ratio.Multi-step transformation processes,including defect creation,were designed to enhance the yield of CC.As a result,the yield of CC was significantly increased for the C70 encapsulated single-walled CNTs by more than an order of magnitude than the empty counterparts,which also surpasses that of the double-walled CNTs,making it the most effective route for synthesizing CC.These findings highlight the importance of the additional carbon source and the optimal pathway for CC formation,offering valuable insights for the application of materials with high yield.

关 键 词：confined carbyne yield enhancement carbon nanotube C70 encapsulation defect introduction Raman spectroscopy 

分 类 号：O61[理学—无机化学]