Electric field induced selective disordering in lamellar block copolymers.
Electric field induced selective disordering in lamellar block copolymers.
复制标题
电场诱导层状嵌段共聚物的选择性无序
作者:
Ruppel;Pester;Langner;Sevink;Schoberth;Schmidt;Böker A.
External electric fields align nanostructured block copolymers by either rotation of grains or nucleation and growth depending on how strongly the chemically distinct block copolymer components are segregated. In close vicinity to the order–disorder transition, theory and simulations suggest a third mechanism: selective disordering. We present a time-resolved small-angle X-ray scattering study that demonstrates how an electric field can indeed selectively disintegrate ill-aligned lamellae in a lyotropic block copolymer solution, while lamellae with interfaces oriented parallel to the applied field prevail. The present study adds an additional mechanism to the experimentally corroborated suite of mechanistic pathways, by which nanostructured block copolymers can align with an electric field. Our results further unveil the benefit of electric field assisted annealing for mitigating orientational disorder and topological defects in block copolymer mesophases, both in close vicinity to the order–disorder transition and well below it.
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DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
L. Bokobza;C. Phan;L. Monnerie;J. Vandendriessche;F. Schryver
通讯作者:
F. Schryver
影响因子:
5.8
作者:
H. Schoberth;Christian W. Pester;M. Ruppel;V. Urban;A. Böker
通讯作者:
H. Schoberth;Christian W. Pester;M. Ruppel;V. Urban;A. Böker
影响因子:
5.5
作者:
G. Fredrickson;L. Leibler
通讯作者:
L. Leibler
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
I. Gunkel;S. Stepanow;T. Thurn‐Albrecht;S. Trimper
通讯作者:
S. Trimper
影响因子:
5.5
作者:
SAKAMOTO, N;HASHIMOTO, T
通讯作者:
HASHIMOTO, T