A hybrid enrichment process combining conjugated polymer extraction and silica gel adsorption for high purity semiconducting single-walled carbon nanotubes (SWCNT). Issue 38 (9th September 2015)

• Record Type: Journal Article
• Authors: Ding, Jianfu; Li, Zhao; Lefebvre, Jacques; Cheng, Fuyong; Dunford, Jeffrey L.; Malenfant, Patrick R. L.; Humes, Jefford; Kroeger, Jens
• Is Part Of: Nanoscale. Volume 7:Issue 38(2015)
• Page Start: 15741
• Page End: 15747
• Publication Date: 2015-09-09
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr04851f
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : A novel process provides sc-SWCNTs in high purity with significant improvement in efficiency and yield. Abstract : A novel purification process for the enrichment of sc-SWCNTs that combines selective conjugated polymer extraction (CPE) with selective adsorption using silica gel, termed hybrid-CPE (h-CPE), has been developed, providing a high purity sc-SWCNT material with a significant improvement in process efficiency and yield. Using the h-CPE protocol, a greater than 5 fold improvement in yield can be obtained compared to traditional CPE while obtaining sc-SWCNT with a purity >99.9% as assessed by absorption spectroscopy and Raman mapping. Thin film transistor devices using the h-CPE derived sc-SWCNTs as the semiconductor possess mobility values ranging from 10–30 cm 2 V −1 s −1 and current ON/OFF ratio of 10 4 –10 5 for channel lengths between 2.5 and 20 μm.