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Orientation Control of Semiconducting Polymers Using Microchannel Molds.
- Source :
-
ACS nano [ACS Nano] 2020 Oct 27; Vol. 14 (10), pp. 12951-12961. Date of Electronic Publication: 2020 Oct 16. - Publication Year :
- 2020
-
Abstract
- The molecular orientation of organic semiconductors (OSCs) is of fundamental importance to anisotropic electrical behavior as well as superior properties in practical applications. Here, a simple and effective method is demonstrated to fabricate highly oriented semiconducting polymers, poly(3-hexylthiophene) (P3HT) and poly{[ N , N '-bis(2-octyldodecyl)-1,4,5,8-naphthalenediimide-2,6-diyl]- alt -5,5'-(2,2'-bithiophene)} (P(NDI2OD-T2)), by mass transfer effect under microchannel molds by diffusion and convection. Furthermore, parallel or perpendicular molecular arrangements relative to the channel direction were achieved by varying the widths of the microchannels, which are directly observed using polarized optical microscopy and two-dimensional grazing-incidence X-ray diffraction experiments. The method could enable the fabrication of organic field-effect transistors that exhibit anisotropic electrical properties indicating inter- or intrachain charge transport. The resulting platform will provide a simple approach for multidirectional orientations of anisotropic OSCs.
Details
- Language :
- English
- ISSN :
- 1936-086X
- Volume :
- 14
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- ACS nano
- Publication Type :
- Academic Journal
- Accession number :
- 33064002
- Full Text :
- https://doi.org/10.1021/acsnano.0c04138