Electron doping of single-walled carbon nanotubes using pyridine-boryl radicals

Naoki Tanaka; Aoi Hamasuna; Takuto Uchida; Ryohei Yamaguchi; Taiki Ishii; Aleksandar Staylkov; Tsuyohiko Fujigaya

doi:10.1039/d1cc01354h

Electron doping of single-walled carbon nanotubes using pyridine-boryl radicals

Chem Commun (Camb). 2021 Jun 17;57(49):6019-6022. doi: 10.1039/d1cc01354h.

Authors

Naoki Tanaka¹, Aoi Hamasuna², Takuto Uchida², Ryohei Yamaguchi², Taiki Ishii², Aleksandar Staylkov³, Tsuyohiko Fujigaya⁴

Affiliations

¹ Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. fujigaya.tsuyohiko.948@m.kyushu-u.ac.jp and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
² Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. fujigaya.tsuyohiko.948@m.kyushu-u.ac.jp.
³ International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
⁴ Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan. fujigaya.tsuyohiko.948@m.kyushu-u.ac.jp and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan and Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.

PMID: 34032240
DOI: 10.1039/d1cc01354h

Abstract

Pyridine-boryl (py-boryl) radicals serve as efficient electron-doping reagents for single-walled carbon nanotubes (SWCNTs). The doping mechanism comprises electron transfer from the py-boryl radical to the SWCNT. The formation of a stable py-boryl cation is essential for efficient doping; the captodative effect of the py-boryl cation is important to this process.