119th General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation for Young Polymer Scientists
Room No. 405호
Time THU 10:15-:
Code POLY.O-6
Subject Low-Crystallinity Conducting Polymers Showing High Field-Effect Mobility
Authors 손성윤, 박태호*
POSTECH 화학공학과, Korea
Abstract Conducting polymers form complicated microstructures combining crystalline and amorphous regions because of their semicrystalline nature. Crystalline regions of conducting polymers have a more regular arrangement than amorphous regions. Hence, they typically also have higher rates of charge carrier transport due to enhanced charge carrier delocalization. Thus, various studies have attempted to increase crystallinity of conducting polymers to enhance charge carrier transport. However, these approaches are inevitably limited by the semicrystalline nature of conducting polymers. Furthermore, increase in crystallinity can lead to significant decrease in mechanical resilience because cracks tend to occur at grain boundaries of crystalline domains. In this study, in an effort to improve charge carrier transport in low-crystallinity conducting polymers, we form localized aggregates in amorphous regions of the polymers by introducing thiophene monomers without alkyl chains into the polymer backbone. As a result, the resulting increase in connectivity between polymer backbones within the amorphous regions and backbone planarity give rise to enhanced inter- and intra-chain charge transport.
E-mail sonsy1777@postech.ac.kr