Size, Shape, and Lateral Correlation of Highly Uniform, Mesoscopic, Self-Assembled Domains of Fluorocarbon-Hydrocarbon Diblocks at the Air/Water Interface: A GISAXS Study.

Size, Shape, and Lateral Correlation of Highly Uniform, Mesoscopic, Self-Assembled Domains of Fluorocarbon-Hydrocarbon Diblocks at the Air/Water Interface: A GISAXS Study.
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空气/水界面处氟碳-烃二嵌段的高度均匀、介观、自组装域的尺寸、形状和横向相关性:GISAXS 研究

DOI:
10.1002/cphc.201700325
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发表时间:
2017
期刊:
Chemphyschem : a European journal of chemical physics and physical chemistry
影响因子:
--
通讯作者:
M. Tanaka
M. Tanaka
中科院分区:
--
文献类型:
--
作者:
M. Veschgini;W. Abuillan;S. Inoue;A. Yamamoto;S. Mielke;X. Liu;O. Konovalov;M.P. Krafft;M. Tanaka

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用掠入射小角X射线散射(GISAXS)定量测定了氟碳烃(FnHm)双嵌段自组装介观表面区的形状和尺寸,以及这些表面区之间的横向相关性。通过对结构和形状因子的充分计算,揭示了碳氢化合物和碳氢化合物块长度对域的直径和高度的影响,并提供了域间关联长度。由形状因子分析确定的磁区直径随每一块的系统加长而单调增加,这可归因于分子间范德华引力的增加。由结构因子计算的实空间的对相关函数表明,域间相关性可以达到比域大小大25倍以上的距离。这里介绍的GISAXS信号的完整计算为自组装小有机分子的中尺度结构域的分层设计打开了可能性,覆盖了空间中的几个数量级。
The shape and size of self‐assembled mesoscopic surface domains of fluorocarbon–hydrocarbon (FnHm) diblocks and the lateral correlation between these domains were quantitatively determined from grazing incidence small‐angle X‐ray scattering (GISAXS). The full calculation of structure and form factors unravels the influence of fluorocarbon and hydrocarbon block lengths on the diameter and height of the domains, and provides the inter‐domain correlation length. The diameter of the domains, as determined from the form factor analysis, exhibits a monotonic increase in response to the systematic lengthening of each block, which can be attributed to the increase in van der Waals attraction between molecules. The pair correlation function in real space calculated from the structure factor implies that the inter‐domain correlation can reach a distance that is over 25 times larger than the domain's size. The full calculation of the GISAXS signals introduced here opens a potential towards the hierarchical design of mesoscale domains of self‐assembled small organic molecules, covering several orders of magnitude in space.
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