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通过棒涂法制备六苯并蔻（HBC）液晶薄膜的形态与排列转变：涂布速度的影响

Morphology and Alignment Transition of Hexabenzocoronene (HBC) Mesogen Films by Bar Coating: Effect of Coating Speed.

作者信息

Yang Hao-Chun, Du You-Sheng, Lee Jey-Jau, Yeh Chun-Hong, Tseng Mei-Chun, Ho Yi-Chi, Kuo Han-Wen, Yoshida Hiroyuki, Fujii Akihiko, Ozaki Masanori, Tao Yu-Tai, Akutagawg Tomoyuki, Chen Hsiu-Hui

机构信息

Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei 106, Taiwan.

National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan.

出版信息

Langmuir. 2024 Aug 13;40(32):16846-16854. doi: 10.1021/acs.langmuir.4c01331. Epub 2024 Aug 2.

DOI:10.1021/acs.langmuir.4c01331
PMID:39094224
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11325635/
Abstract

Films of the discotic liquid crystalline hexabenzocoronene (HBC) derivative, , 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.

摘要

通过棒涂法在石英基板上制备了盘状液晶六苯并蔻（HBC）衍生物的薄膜。根据涂布速度，观察到规则间隔的条纹或连续薄膜。在前一种情况下，HBC衍生物的柱体更多地沿条纹排列，条纹垂直于涂布方向，而在后一种情况下，薄膜中HBC衍生物的柱体更多地沿涂布方向排列。这些独特的结构通过偏光显微镜（POM）、偏振紫外可见光谱和掠入射小角X射线散射测量得到证实。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/1c7982cef047/la4c01331_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/830005de80aa/la4c01331_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/56d37c25ee51/la4c01331_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/495428e9a339/la4c01331_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/45ea33119fea/la4c01331_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/69cf42ea1b2a/la4c01331_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/bed8f4b96887/la4c01331_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/1c7982cef047/la4c01331_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/830005de80aa/la4c01331_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/56d37c25ee51/la4c01331_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/495428e9a339/la4c01331_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/45ea33119fea/la4c01331_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/69cf42ea1b2a/la4c01331_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/bed8f4b96887/la4c01331_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7920/11325635/1c7982cef047/la4c01331_0007.jpg

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