The adsorption of fluorinated dopants at the surface of 5CB: a neutron reflection study
The adsorption of fluorinated dopants at the surface of 5CB: a neutron reflection study
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氟化掺杂剂在 5CB 表面的吸附:中子反射研究
DOI:
10.1080/02678292.2014.986769
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发表时间:
2015
期刊:
影响因子:
2.2
通讯作者:
Mears L
中科院分区:
文献类型:
--
作者:
Mears L
The adsorption of dopants at the surface of 5CB has been studied using neutron reflection. The dopants were versions of 11OCB with partly fluorinated chains, and the 5CB was interfaced with air or with silica treated with fluorocarbon or hydrocarbon coatings. At the air interface, the F17-11OCB adsorbed homeotropically, and the amount increased on cooling into the nematic phase of 5CB. At low temperatures, the adsorption from the nematic phase appeared to saturate at a bilayer. At the solid interfaces, there was some evidence for a thin planar layer at the surface, but most of the adsorbed dopant was in the form of diffuse layers. In both cases, an increase in dopant concentration caused higher adsorbed amounts. For F17-11OCB, the amount absorbed was much greater for a fluorinated coating as opposed to a hydrocarbon-coated surface. Also no adsorption of the F3-11OCB could be detected, suggesting that the adsorption process is driven by the oleophobic effect. The results demonstrate that it is possible to manipulate surface properties of liquid crystals using surfactant-like dopants.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Xinkuan Wang;Yuhong Liu;Jianbin Luo;G. Xie
通讯作者:
G. Xie
DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
J. Emsley;G. R. Luckhurst;C. Stockley
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C. Stockley
影响因子:
3.4
作者:
Campbell, R. A.;Wacklin, H. P.;Fragneto, G.
通讯作者:
Fragneto, G.
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
L. Gomes;N. Demarquette
通讯作者:
N. Demarquette