Post‐Polymerization Strategy via Dual Site Clicking for Synthesizing Intrinsically Cross‐Linkable Semiconducting Polymers
Jaehoon Lee,
Seungju Kang,
Eunsoo Lee,
Jiyun Lee,
Tae Woong Yoon,
Min‐Jae Kim,
Yongjoon Cho,
Mingfei Xiao,
Yorrick Boeije,
Wenjin Zhu,
Changduk Yang,
Jin‐Wook Lee,
Sungjoo Lee,
Guobing Zhang,
Henning Sirringhaus,
Boseok Kang
Affiliations
Jaehoon Lee
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Seungju Kang
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Eunsoo Lee
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Jiyun Lee
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Tae Woong Yoon
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Min‐Jae Kim
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Yongjoon Cho
School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center Ulsan National Institute of Science and Technology (UNIST) Ulsan South Korea
Mingfei Xiao
Department of Instrument Science and Technology, School of Mechanical Science and Engineering Huazhong University of Science and Technology Wuhan China
Yorrick Boeije
Department of Physics, Cavendish Laboratory University of Cambridge Cambridge UK
Wenjin Zhu
Optoelectronics Group, Cavendish Laboratory University of Cambridge Cambridge UK
Changduk Yang
School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center Ulsan National Institute of Science and Technology (UNIST) Ulsan South Korea
Jin‐Wook Lee
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Sungjoo Lee
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
Guobing Zhang
Special Display and Imaging Technology Innovation Center of Anhui Province, State Key Laboratory of Advanced Display Technology, Academy of Opto‐Electronic Technology Hefei University of Technology Hefei P. R. China
Henning Sirringhaus
Optoelectronics Group, Cavendish Laboratory University of Cambridge Cambridge UK
Boseok Kang
SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Science and Technology Sungkyunkwan University Suwon Korea
ABSTRACT Crosslinked organic semiconductors have opened the way for various fabrication techniques in the field of organic electronics owing to their three‐dimensional network structure with high solvent resistivity. However, recent efforts to synthesize cross‐linkable semiconducting polymers have been limited by their low molecular weights and yields. In this study, this limitation is overcome by a novel post‐polymerization strategy. A reagent with a cross‐linkable functional group, (3‐mercaptopropyl)trimethoxysilane, is attached to a diketopyrrolopyrrole‐based donor–acceptor copolymer (DPPTT) via thioesterification and para‐fluoro‐thiol reaction, modifying two sites simultaneously. This modification preserves the molecular weight and electrical properties of the original polymers. In addition, the use of click chemistry enables high yield (98%) without any purification. The modified DPPTT demonstrated high resistance to organic solvents (80% retention dipped in 1‐chlorobenzene for 1 h). Exploiting this benefit, an ultrathin flexible array of 100 organic field‐effect transistors fabricated using conventional photolithography showed high‐performance reliability. Thus, this study provides a universal strategy to synthesize versatile polymer semiconductors for practical organic electronics.
