Isolation of Pristine Electronics Grade Semiconducting Carbon Nanotubes by Switching the Rigidity of the Wrapping Polymer Backbone on Demand

ACS Nano
Yongho JooPadma Gopalan

Abstract

Conjugated polymers are among the most selective carbon nanotube sorting agents discovered and enable the isolation of ultrahigh purity semiconducting singled-walled carbon nanotubes (s-SWCNTs) from heterogeneous mixtures that contain problematic metallic nanotubes. The strong selectivity though highly desirable for sorting, also leads to irreversible adsorption of the polymer on the s-SWCNTs, limiting their electronic and optoelectronic properties. We demonstrate how changes in polymer backbone rigidity can trigger its release from the nanotube surface. To do so, we choose a model polymer, namely poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(6,60-(2,20-bipyridine))] (PFO-BPy), which provides ultrahigh selectivity for s-SWCNTs, which are useful specifically for FETs, and has the chemical functionality (BPy) to alter the rigidity using mild chemistry. Upon addition of Re(CO)5Cl to the solution of PFO-BPy wrapped s-SWCNTs, selective chelation with the BPy unit in the copolymer leads to the unwrapping of PFO-BPy. UV-vis, XPS, and Raman spectroscopy studies show that binding of the metal ligand complex to BPy triggers up to 85% removal of the PFO-BPy from arc-discharge s-SWCNTs (diameter = 1.3-1.7 nm) and up to 72% from CoMoCAT s-SW...Continue Reading

References

Apr 15, 2003·Nature Materials·Ming ZhengNancy G Tassi
Oct 14, 2005·Journal of the American Chemical Society·Andrea GoldoniSilvano Lizzit
Jul 26, 2008·Nature Nanotechnology·Michael S ArnoldMark C Hersam
Jul 26, 2008·Nature Nanotechnology·Adrian NishRobin J Nicholas
Mar 9, 2010·The Journal of Physical Chemistry. B·Syamal S Tallury, Melissa A Pasquinelli
Feb 5, 2011·Journal of the American Chemical Society·Hiroaki OzawaNaotoshi Nakashima
Mar 4, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Yongho JooPadma Gopalan

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Citations

May 18, 2016·The Journal of Physical Chemistry Letters·Randy D MehlenbacherMartin T Zanni
Apr 21, 2017·ACS Applied Materials & Interfaces·Xiaoqin YuQingwen Li
Nov 20, 2016·Advanced Materials·Jian Zhu, Mark C Hersam
Mar 3, 2021·ACS Applied Materials & Interfaces·Ilhwan YuYongho Joo
Aug 29, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Jonathan H DwyerPadma Gopalan
Sep 14, 2017·Accounts of Chemical Research·Jacques LefebvrePatrick R L Malenfant
Aug 2, 2017·ACS Applied Materials & Interfaces·Yongho JooPadma Gopalan
Sep 26, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Hiroaki OzawaMasa-Aki Haga
Aug 19, 2017·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Jacek KłosYuHuang Wang

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