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Morphology and Alignment Transition of Hexabenzocoronene (HBC) Mesogen Films by Bar Coating: Effect of Coating Speed.
- Source :
-
Langmuir : the ACS journal of surfaces and colloids [Langmuir] 2024 Aug 13; Vol. 40 (32), pp. 16846-16854. Date of Electronic Publication: 2024 Aug 02. - Publication Year :
- 2024
-
Abstract
- Films of the discotic liquid crystalline hexabenzocoronene (HBC) derivative, HBC-1,3,5-Ph-C <subscript> 12 </subscript> , were prepared on the quartz substrate by the bar-coating method. Depending on the coating speed, regularly spaced stripes or continuous films were observed. In the former case, columns of the HBC derivatives align more along the stripes, which are perpendicular to the coating direction, whereas in the latter case, columns of the HBC derivatives in the film align more along the coating direction. These distinctive structures are confirmed via polarized optical microscopy (POM), polarized UV-vis spectroscopy, and grazing incidence small-angle X-ray scattering measurements.
Details
- Language :
- English
- ISSN :
- 1520-5827
- Volume :
- 40
- Issue :
- 32
- Database :
- MEDLINE
- Journal :
- Langmuir : the ACS journal of surfaces and colloids
- Publication Type :
- Academic Journal
- Accession number :
- 39094224
- Full Text :
- https://doi.org/10.1021/acs.langmuir.4c01331