Controlling Molecular Ordering in Aqueous Conducting Polymers Using Ionic Liquids

Seyoung Kee; Nara Kim; Bong Seong Kim; Seongjin Park; Yun Hee Jang; Seoung Ho Lee; Jehan Kim; Junghwan Kim; Sooncheol Kwon; Kwanghee Lee

doi:10.1002/adma.201505473

Controlling Molecular Ordering in Aqueous Conducting Polymers Using Ionic Liquids

Adv Mater. 2016 Oct;28(39):8625-8631. doi: 10.1002/adma.201505473. Epub 2016 Aug 8.

Authors

Affiliations

¹ School of Materials Science and Engineering and Department of Nanobio Materials and Electronics, Heeger Center for Advanced Materials and Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju, 500-712, Republic of Korea.
² Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 790-784, Republic of Korea.
³ School of Materials Science and Engineering and Department of Nanobio Materials and Electronics, Heeger Center for Advanced Materials and Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju, 500-712, Republic of Korea. [email protected].

PMID: 27501437
DOI: 10.1002/adma.201505473

Abstract

The molecular ordering of aqueous conducting polymers is controlled using a rational method. By introducing various ionic liquids, which have designed electrostatic interactions to PEDOT:PSS solutions, the evolution of the molecular ordering of the PEDOT is manipulated. Consequently, highly ordered nanostructures are achieved with a reduced π-π stacking distance of ≈3.38 Å and, thus, a maximum σ_dc of ≈2100 S cm^-1 .

Keywords: PEDOT:PSS; conducting polymers; ionic liquids; molecular ordering; printed electronics.