@article{Park2011, 
author = {Sung Hye Park and Sung Hwan Jin and Gwang Hoon Jun and Seokwoo Jeon and Soon Hyung Hong},
title = {Enhanced Electrical Properties in Carbon Nanotube/Poly (3-hexylthiophene) Nanocomposites Formed Through Non-Covalent Functionalization},
year = {2011},
journal = {Nano Research},
volume = {4},
number = {11},
pages = {1129-1135},
keywords = {nanocomposites, Carbon nanotubes, conjugated polymers, organic thin film transistors},
url = {https://www.sciopen.com/article/10.1007/s12274-011-0161-6},
doi = {10.1007/s12274-011-0161-6},
abstract = {Poly(3-hexylthiophene) (P3HT) has received much attention as a good candidate to replace inorganic semiconductors for flexible electronics due to its solution-processability. However, the low charge mobility of P3HT is an obstacle to its commercialization. To overcome this problem, we propose a new non-covalent functionalization method for carbon nanotubes (CNTs) for use in CNT/P3HT nanocomposites. By using modified pyrene molecules with hydrophobic long alkyl chains, the non-covalently functionalized CNTs can become well dispersed in hydrophobic solutions and organic semiconductor matrices. Fabrication of organic thin-film transistors (OTFTs) from the non-covalently functionalized CNT/organic semiconductor nanocomposites shows that our non-covalent functionalization method significantly reduces damage to CNTs during functionalization when compared with covalent functionalization by treatment with acids. The OTFTs show 15 times enhancement of field effect mobility (1.5 × 10−2 cm2/(V·s)) compared to the mobility of OTFTs made from pure P3HT. This enhancement is achieved by addition of only 0.25 wt% of CNTs to P3HT.}
}