Presentation Information
[3C03]Highly efficient synthesis of long linear carbon chains encapsulated inside small-diameter single-walled carbon nanotubes by using polyyne molecules as precursor
*Takahiro Maruyama1,2, Haruma Sunako1, Chen Zhao1, Takahiro Saida1,2, Shu Morita3, Minoru Osada3,4, Xinluo Zhao5 (1. Department of Applied Chemsitry, Meijo University, 2. Nanomaterial Research Center, 3. Department of Materials Chemistry & Institute of Materials and Systems for Sustainability (IMaSS), 4. Research Institute for Quantum and Chemical Innovation, Institute of Innovation for Future Society, 5. Graduate School of Science and Technology)
Long linear carbon chains (LLCCs) encapsulated inside single-walled carbon nanotubes (SWCNTs) were synthesized by inserting polyynes (C2nH2) as a carbon source into SWCNTs, followed by annealing under high vacuum. By optimizing the polyyne solution concentration, high-yield LLCCS were efficiently prepared inside SWCNTs with diameters less than 0.8 nm. The intensity ratio of L band to G band (IL/IG) in Raman spectrum reached 3.6, which was much higher than the reported values for LLCCs encapsulated inside such small-diameter SWCNTs. Thus, high-density LLCCs were encapsulated inside small-diameter SWCNTs. IL/IG was markedly enhanced under the resonance condition of the host SWCNTs, where the energy was effectively transferred from the host SWCNTs to LLCCs.