Cholesteric ordering predicted using a coarse-grained polymeric model with helical interactions.
Cholesteric ordering predicted using a coarse-grained polymeric model with helical interactions.
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使用具有螺旋相互作用的粗粒聚合物模型预测胆甾醇排序
DOI:
10.1039/c7sm02077e
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发表时间:
2018-01
期刊:
影响因子:
3.4
通讯作者:
Huai Sun
中科院分区:
文献类型:
--
作者:
Liang Wu;Huai Sun
The understanding of cholesteric liquid crystals at a molecular level is challenging. Limited insights are available to bridge between molecular structures and macroscopic chiral organization. In the present study, we introduce a novel coarse-grained (CG) molecular model, which is represented by flexible chain particles with helical interactions (FCh), to study the liquid crystalline phase behavior of cholesteric molecules such as double strand DNA and α-helix polypeptides using molecular dynamics (MD) simulations. The isotropic-cholesteric phase transitions of FCh molecules were simulated for varying chain flexibilities. A wall confinement was used to break the periodicity along the cholesteric helix director in order to predict the equilibrium cholesteric pitch. The left-handed cholesteric phase was shown for FCh molecules with right-handed chiral interactions, and a spatially inhomogeneous distribution of the nematic order parameter profile was observed in cholesteric phases. It was found that the chain flexibility plays an important role in determining the macroscopic cholesteric pitch and the structure of the cholesteric liquid crystal phase. The simulations provide insight into the relationship between microscopic molecular characteristics and the macroscopic phase behavior.
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影响因子:
2.1
作者:
Huang Hao;Cao Fenglei;Wu Liang;Sun Huai
通讯作者:
Sun Huai
影响因子:
1.7
作者:
S. Varga;G. Jackson
通讯作者:
S. Varga;G. Jackson
影响因子:
5.5
作者:
D. Luzhbin;Yeng-Long Chen
通讯作者:
D. Luzhbin;Yeng-Long Chen
影响因子:
9.5
作者:
O. M. Roscioni;L. Muccioli;C. Zannoni
通讯作者:
O. M. Roscioni;L. Muccioli;C. Zannoni
DOI:
10.1209/0295-5075/107/36001
发表时间:
2014-05
期刊:
Europhysics Letters
影响因子:
--
作者:
H. H. Wensink-H.
通讯作者:
H. H. Wensink-H.