Spontaneous bending of 2D molecular bottle-brush
Spontaneous bending of 2D molecular bottle-brush
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二维分子瓶刷的自发弯曲
DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
G. ten Brinke
中科院分区:
文献类型:
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作者:
A. Subbotin;J. D. de Jong;G. ten Brinke
Abstract.Using a scaling approach we consider a 2D comb copolymer brush under bending deformations. We show that the rectilinear brush is locally stable and can be characterized by a persistence length λ increasing with the molecular weight of grafting side chains as λ ∼ M3. A bending instability due to redistribution of the side chains appears in the non-linear regime where bending is strong. Arguments are presented that the brush conformations consist of alternating rectilinear and bent sections corresponding to the different free-energy minima.