Numerous applications using singlewall carbon nanotubes (SWCNTs) have been conducted due to their excellent electrical and mechanical properties. In spite of that, the coexistence of metallic and semiconducting SWCNT in commercial CNT products has int...
Numerous applications using singlewall carbon nanotubes (SWCNTs) have been conducted due to their excellent electrical and mechanical properties. In spite of that, the coexistence of metallic and semiconducting SWCNT in commercial CNT products has interrupted the advances of technological applications including electronic devices and chemical/bio-sensors.
Recently we have reported the charge-transfer interaction between SWCNT and tetrathiafulvalene (TTF), a well-known organic donor, in which TTF has differently interacted toward two types SWCNTs. Herein we report the selective interaction of SWCNTs with TTF during charge-transfer interaction, and the spectroscopic characterization with Raman, UV-vis-NIR. Dramatic decrease of RBM corresponding to metallic species in Raman spectrum and increase of characteristic semiconducting absorption bands in UV-vis-NIR of TTF-SWCNT show that TTFs selectively participate in charge-transfer reaction with metallic SWCNTs. We expect the charge-transfer interaction using organic electronic materials is technologically critical to control electrical properties of SWCNTs.