journal article·2010-11-23

Transparent Organic P-Dopant in Carbon Nanotubes: Bis(trifluoromethanesulfonyl)imide

Soo Min Kim, Young Woo Jo, Ki Kang Kim, Dinh Loc Duong, Hyeon-Jin Shin, Jong Hun Han, Jae-Young Choi, Jing Kong, Young Hee Lee

ACS Nano· Volume 4· Issue 11
Publisher page

Abstract

We propose bis(trifluoromethanesulfonyl)imide [(CF(3)SO(2))(2)N](-) (TFSI) as a transparent strong electron-withdrawing p-type dopant in carbon nanotubes (CNTs). The conventional p-dopant, AuCl(3), has several drawbacks, such as hygroscopic effect, formation of Au clusters, decrease in transmittance, and high cost in spite of the significant increase in conductivity. TFSI is converted from bis(trifluoromethanesulfonyl)amine (TFSA) by accepting electrons from CNTs, subsequently losing a proton as a characteristic of a Brønsted acid, and has an inductive effect from atoms with high electronegativity, such as halogen, oxygen, and nitrogen. TFSI produced a similar improvement in conductivity to AuCl(3), while maintaining high thermal stability, and no appreciable change in transmittance with no cluster formation. The effectiveness of TFSI was compared with that of other derivatives.
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Research context

OpenAlex topics: Graphene research and applications · Carbon Nanotubes in Composites · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

BK21 Physics Division, Department of Energy Science, and Center for Nanotubes and Nanostructured Composites, Sungkyunkwan Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU), Suwon 440-746, Korea

Department of Electrical Engineering and Computer Sciences, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, United States

Display Lab, Samsung Advanced Institute of Technology (SAIT), P.O. Box 111, Suwon 440-600, Korea

Nanomaterials-Processing Group/Energy/Nano Materials Research Center Korea Electronics Technology Institute (KETI) 68 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-816, Korea

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