Three-dimensional micropatterning of semiconducting polymers via capillary force-assisted evaporative self-assembly
- Authors
- Shin, Jae In; Cho, Su Jung; Jeon, Jisoo; Lee, Kwang Hee; Wie, Jeong Jae
- Issue Date
- May-2019
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- SOFT MATTER, v.15, no.19, pp.3854 - 3863
- Indexed
- SCIE
SCOPUS
- Journal Title
- SOFT MATTER
- Volume
- 15
- Number
- 19
- Start Page
- 3854
- End Page
- 3863
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189880
- DOI
- 10.1039/C9SM00478E
- ISSN
- 1744-683X
- Abstract
- Controlled evaporative self-assembly of semiconducting polymers has mostly been studied on 2-dimensional flat substrates. In this study, we reported capillary-assisted evaporative self-assembly of poly(3-hexylthiophene 2,5-diyl) (P3HT) into 3-D micro-ring patterns through the stick-slip phenomenon within a 3-dimensional cylinder. We deconvoluted the well-known two-step stick-slip phenomenon into three regimes through in situ monitoring of the P3HT self-assembly process using a high-speed camera: pinning and deposition; depinning and slip; and retraction regimes. Furthermore, we investigated the effects of various parameters associated with the self-assembly, including polymer concentration, tilt angle, magnetic field, and evaporation temperature, thus achieving self-assembled microarchitectures with diverse dimensions ranging from dots to lines and networks. The self-assembled microstructures were analyzed qualitatively and quantitatively by evaluating the fast Fourier transform image, surface coverage, fractal dimension and lacunarity of the micropatterns.
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