Selective Dispersion of High Purity Semiconducting Single-walled Carbon Nanotubes with Regioregular Poly(3-alkylthiophene)s

Overview

Journal Nat Commun

Specialty Biology

Date 2011 Nov 17

PMID 22086341

Citations 32

Authors

Hang Woo Lee

Yeohoon Yoon

Steve Park

Joon Hak Oh

Sanghyun Hong

Luckshitha S Liyanage

Huiliang Wang

Satoshi Morishita

Nishant Patil

Young Jun Park

Jong Jin Park

Andrew Spakowitz

Giulia Galli

Francois Gygi

Philip H-S Wong

Jeffrey B-H Tok

Jong Min Kim

Zhenan Bao

Affiliations

Soon will be listed here.

Abstract

Conjugated polymers, such as polyfluorene and poly(phenylene vinylene), have been used to selectively disperse semiconducting single-walled carbon nanotubes (sc-SWNTs), but these polymers have limited applications in transistors and solar cells. Regioregular poly(3-alkylthiophene)s (rr-P3ATs) are the most widely used materials for organic electronics and have been observed to wrap around SWNTs. However, no sorting of sc-SWNTs has been achieved before. Here we report the application of rr-P3ATs to sort sc-SWNTs. Through rational selection of polymers, solvent and temperature, we achieved highly selective dispersion of sc-SWNTs. Our approach enables direct film preparation after a simple centrifugation step. Using the sorted sc-SWNTs, we fabricate high-performance SWNT network transistors with observed charge-carrier mobility as high as 12 cm(2) V(-1) s(-1) and on/off ratio of >10(6). Our method offers a facile and a scalable route for separating sc-SWNTs and fabrication of electronic devices.

Citing Articles

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Size Matters in Conjugated Polymer Chirality-Selective SWCNT Extraction.

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The Effects of Lengths of Flavin Surfactant -10-Alkyl Side Chains on Promoting Dispersion of a High-Purity and Diameter-Selective Single-Walled Nanotube.

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