Carbon nanotube chirality determines properties of encapsulated linear carbon chain

Abstract

Long linear carbon chains encapsulated inside carbon nanotubes are a very close realization of carbyne, the truly one-dimensional allotrope of carbon. Here we study individual pairs of double-walled carbon nanotubes and encapsulated linear carbon chains by tip-enhanced Raman scattering. We observe that the radial breathing mode of the inner nanotube correlates with the frequency of the carbon chain's Raman mode, revealing that the nanotube chirality determines the vibronic and electronic properties of the encapsulated carbon chain. We provide the missing link that connects the properties of the encapsulated long linear carbon chain with the structure of the host nanotube.

arXiv commentkeywords: linear carbon chains; carbyne; carbon nanotubes; tip-enhanced Raman scattering; TERS; Significant changes compared to first version of the manuscript. Current version includes Supporting Information

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Cited by in corpus (8)

• Nanotube-based one-dimensional heterostructures coupled by van der Waals forces
• Raman Scattering Cross Section of Confined Carbyne
• T-carbon: experiments, properties, derivatives and potential applications
• Electronic structure of confined carbyne from joint wavelength-dependent resonant Raman spectroscopy and density functional theory investigations
• Moiré-induced Vibrational Coupling in Double Walled Carbon Nanotubes
• Disclosing Early Excited State Relaxation Events in Prototypical Linear Carbon Chains
• Ultra-clean isotope engineered double-walled carbon nanotubes as tailored hosts to trace the growth of carbyne
• Formation of nanoribbons by carbon atoms confined in a single-walled carbon nanotube -- A molecular dynamics study