Two-Dimensional Physical Gels Can Exist even at Zero Surface Pressure at the Air/Water Interface - Rheology of Self-Assembled Domains of Small Molecules
Two-Dimensional Physical Gels Can Exist even at Zero Surface Pressure at the Air/Water Interface - Rheology of Self-Assembled Domains of Small Molecules
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二维物理凝胶即使在空气/水界面的零表面压力下也可以存在 - 小分子自组装域的流变学
DOI:
10.1002/ange.201707009
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发表时间:
2017
影响因子:
--
通讯作者:
M. Tanaka
中科院分区:
文献类型:
--
作者:
M. Veschgini;T. Habe;S. Mielke;S. Inoue;X. Liu;M.P. Krafft;M. Tanaka
Films of mesoscopic domains self‐assembled from fluorocarbon/hydrocarbon diblock copolymers (FnHm) at the air/water interface were found to display highly elastic behavior. We determined the interfacial viscoelasticity of domain‐patternedFnHmLangmuir monolayers by applying periodic shear stresses. Remarkably, we found the formation of two‐dimensional gels even at zero surface pressure. These monolayers are predominantly elastic, which is unprecedented for surfactants, exhibiting gelation only at high surface pressures. Systematic variation of the hydrocarbon (n=8;m=14, 16, 18, 20) and fluorocarbon (n=8, 10, 12;m=16) block lengths demonstrated that subtle changes in the block length ratio significantly alter the mechanics of two‐dimensional gels across one order of magnitude. These findings open perspectives for the fabrication of two‐dimensional gels with tuneable viscoelasticity via self‐assembly of mesoscale, low‐molecular‐weight materials.
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影响因子:
3.9
作者:
Mourran, A;Tartsch, B;Moeller, M
通讯作者:
Moeller, M
影响因子:
8.6
作者:
I. Cohen;T. Mason;D. Weitz
通讯作者:
D. Weitz
影响因子:
3.9
作者:
C. Naumann;C. F. Brooks;G. Fuller;T. Lehmann;J. Rühe;W. Knoll;P. Kuhn;O. Nuyken;C. Frank
通讯作者:
C. Frank
影响因子:
4.4
作者:
Matthias F. Schneider;D. Andelman;Motomu Tanaka
通讯作者:
Motomu Tanaka
DOI:
10.1088/0953-8984/24/46/464118
发表时间:
2012
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
P. Dillmann;G. Maret;P. Keim
通讯作者:
P. Keim