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Molecular Crystals and Liquid Crystals Volume 662, 2018 - Issue 1: The 21st International Symposium on Advanced Display Materials and Devices (ADMD 2017): Part I
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Articles

Formation of ordered nanostructures in liquid-crystalline block copolymers with side-chain semiconductor materials

Naoto YanahashiGraduate School of Science and Engineering, Chuo University, Bunkyo-ku, Tokyo, Japan
,
Toru UbeResearch & Development Initiative, Chuo University, Bunkyo-ku, Tokyo, Japan
&
Tomiki IkedaResearch & Development Initiative, Chuo University, Bunkyo-ku, Tokyo, Japan;Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, ChinaCorrespondence[email protected]
Pages 68-74 | Published online: 04 Jun 2018
 
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ABSTRACT

We developed a novel block copolymer composed of poly(ethylene oxide) (PEO) and polymethacrylate functionalized with liquid–cryst-alline oligothiophene by using the atom transfer radical polymerization (ATRP), aiming at application to organic photovoltaic (OPV) cells. Thermal investigation showed that the resultant polymer exhibits liquid–crystalline phases both on heating and cooling. Morphologies of the thin films of the block copolymer were investigated by atomic force microscopy (AFM). Microphase separation with a small size of almost 10 nm (nano-phase-separated structures) was observed upon annealing.

Funding

This work was supported by JSPS KAKENHI Grant Numbers JP15K13712, JP15H01095, JP16H04157, JP17H05271, and JP17K19161.

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