title: A photodegradable hexaaza-pentacene molecule for selective dispersion of large-diameter semiconducting carbon nanotubes.
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).
authors.affiliation: Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Science, Suzhou 215123, P. R. China. sqiu2010@sinano.ac.cn qwli2007@sinano.ac.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Han
authors.affiliation: Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Science, Suzhou 215123, P. R. China. sqiu2010@sinano.ac.cn qwli2007@sinano.ac.cn.
authors.forename: Qiyan
authors.initials: Q
authors.lastname: Ji
authors.affiliation: Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Science, Suzhou 215123, P. R. China. sqiu2010@sinano.ac.cn qwli2007@sinano.ac.cn.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Li
authors.affiliation: School of Ocean, Shandong University, Weihai 264209, P. R. China. lihaibei@sdu.edu.cn.
authors.forename: Gang
authors.initials: G
authors.lastname: Li
authors.affiliation: Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Science, Suzhou 215123, P. R. China. sqiu2010@sinano.ac.cn qwli2007@sinano.ac.cn.
authors.forename: Song
authors.initials: S
authors.lastname: Qiu
authors.affiliation: School of Ocean, Shandong University, Weihai 264209, P. R. China. lihaibei@sdu.edu.cn.
authors.forename: Hai-Bei
authors.initials: HB
authors.lastname: Li
authors.affiliation: Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 63731, Singapore.
authors.forename: Qichun
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Science, Suzhou 215123, P. R. China. sqiu2010@sinano.ac.cn qwli2007@sinano.ac.cn.
authors.forename: Hehua
authors.initials: H
authors.lastname: Jin
authors.affiliation: Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Science, Suzhou 215123, P. R. China. sqiu2010@sinano.ac.cn qwli2007@sinano.ac.cn.
authors.forename: Qingwen
authors.initials: Q
authors.lastname: Li
authors.affiliation: College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhang