The diameter and chiral angle of a single-walled carbon nanotube(SWCNT)jointly determine its chiral indices(n,m),which consequently dictate its properties.Theoretical predictions suggest that SWCNTs with extremely sma...The diameter and chiral angle of a single-walled carbon nanotube(SWCNT)jointly determine its chiral indices(n,m),which consequently dictate its properties.Theoretical predictions suggest that SWCNTs with extremely small diameters exhibit strong electron–phonon coupling[1],potentially leading to intriguing properties such as superconductivity and high fluorescence quantum yield.Early attempts synthesized 0.4 nm SWCNT arrays within zeolite AlPO4-5 channels by pyrolyzing tripropylamine molecules in a vacuum of 10−4 Torr[2].However,the significant curvature-strain energy renders these SWCNTs inherently unstable.Upon extraction from the channels,these unstable SWCNTs transform into graphite fragments,hindering the exploration of their intrinsic properties free from zeolite interference and potential applications[2].展开更多
基金supported by the Taishan Scholar Foundation of Shandong Province(tstp20230627)the Key Basic Research Project of Shandong Province(ZR2019ZD49).
文摘The diameter and chiral angle of a single-walled carbon nanotube(SWCNT)jointly determine its chiral indices(n,m),which consequently dictate its properties.Theoretical predictions suggest that SWCNTs with extremely small diameters exhibit strong electron–phonon coupling[1],potentially leading to intriguing properties such as superconductivity and high fluorescence quantum yield.Early attempts synthesized 0.4 nm SWCNT arrays within zeolite AlPO4-5 channels by pyrolyzing tripropylamine molecules in a vacuum of 10−4 Torr[2].However,the significant curvature-strain energy renders these SWCNTs inherently unstable.Upon extraction from the channels,these unstable SWCNTs transform into graphite fragments,hindering the exploration of their intrinsic properties free from zeolite interference and potential applications[2].
