A photodegradable hexaaza-pentacene molecule for selective dispersion of large-diameter semiconducting carbon nanotubes. Issue 49 (27th May 2016)

• Record Type: Journal Article
• Authors: Han, Jie; Ji, Qiyan; Li, Hongbo; Li, Gang; Qiu, Song; Li, Hai-Bei; Zhang, Qichun; Jin, Hehua; Li, Qingwen; Zhang, Jin
• Is Part Of: Chemical communications. Volume 52:Issue 49(2016)
• Page Start: 7683
• Page End: 7686
• Publication Date: 2016-05-27
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c6cc01558a
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : 4HP exhibits high selectivity for large-diameter s-SWCNTs. Abstract : Harvesting high-purity semiconducting single-walled carbon nanotubes (s-SWCNTs) with removable dispersants remains a challenge. In this work, we demonstrate that small heteroacene derivatives may serve as promising selective dispersants for sorting s-SWCNTs. A rich N "doped" and thiophene-substituted hexaazapentacene molecule, denoted as 4HP, was found to be more favorable for high-purity s-SWCNTs with large diameters. Importantly, 4HP is photodegradable under 365 nm or blue light, which enables a simple deposition approach for the formation of clean s-SWCNT networks. The as-fabricated thin film transistors show excellent performance with a charge-mobility of 30–80 cm 2 V −1 s −1 and an on–off ratio of 10 4 –10 6 .