Enhanced Vertical Hole Mobility through End-on Chain Orientation of Poly(3-hexylthiophene)-based Diblock Copolymers by Microphase Separation
SCIE
SCOPUS
- Title
- Enhanced Vertical Hole Mobility through End-on Chain Orientation of Poly(3-hexylthiophene)-based Diblock Copolymers by Microphase Separation
- Authors
- Kim, Philgon; Kim, Eun Young; SEGYO, HAN; Lee, Jaeyong; Kang, Sukwon; Park, Chaneui; Cho, Kilwon; Moon, Hong Chul; Kim, Jin Kon
- Date Issued
- 2022-07
- Publisher
- American Chemical Society
- Abstract
- We synthesized the poly(3-hexylthiophene)-block-poly(3with a regioregularity (RR) of the P3HT block having 82% to obtain an end-on orientation throughout the entire film thickness. Although P3HT-containing block copolymers with high RR = 86% of the P3HT block showed fibril morphology because of strong rod-rod interaction of P3HT, P3HT-b-P3MEGT with RR = 82% of P3HT exhibited a welldefined lamellar morphology induced by microphase separation between P3HT and P3MEGT blocks. P3HT-b-P3MEGT thin films showed parallel-oriented lamellar nanostructures on a silicon substrate because of a large difference in surface tension between hydrophobic P3HT and hydrophilic P3MEGT blocks. Parallel-oriented lamellar nanostructures induced the end-on orientation of P3HT and P3MEGT chains across the entire film. End-on-oriented P3HT-b-P3MEGT thin films showed much enhanced vertical hole mobility, 30 times higher than that of edge-on-oriented P3HT homopolymer thin films with a high RR of 95%
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/115843
- DOI
- 10.1021/acs.macromol.2c00791
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- Macromolecules, vol. 55, no. 14, page. 6160 - 6166, 2022-07
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