Columnar Phases in Liquid Crystal Dendrimers: Variable Pressure X-Ray Diffraction
Columnar Phases in Liquid Crystal Dendrimers: Variable Pressure X-Ray Diffraction
复制标题
液晶树枝状聚合物中的柱状相：变压 X 射线衍射
DOI：
10.1080/15421406.2011.570217
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发表时间：
2011
影响因子：
0.7
通讯作者：
Richardson R
中科院分区：
文献类型：
--
作者：
Richardson R
用x射线衍射研究了第三代和第五代液晶枝状大分子的结构随温度和压力的变化规律。第三代LC枝状大分子由晶向近晶转变，压力的增加只是提高了转变温度。第五代为两种不同的矩形柱状相和一种不同的六边形柱状相。施加压力后，两种矩形相均未转变为简单的近晶相，表明它们是轻微修正的近晶相。六角形相在压力作用下更容易被抑制，这表明分子被分散成圆盘状构象，并在压力下变得更像圆柱体。
The structures of the third and fifth generation of a liquid crystal dendrimer have been studied as a function of temperature and pressure using X-ray diffraction. The third generation LC dendrimer showed a crystal to smectic transition and increasing pressure simply increased the transition temperature. The fifth generation showed two different rectangular columnar phases and one hexagonal columnar phase. The application of pressure did not induce either of the rectangular phases to transform to a simple smectic phase, suggesting that they are slightly modified smectic phases. The hexagonal phase was more easily suppressed by the application of pressure, suggesting that the molecules are splayed into a disc-like conformation and become more cylinder-like under pressure.
一系列 PAMAM 液晶共树枝状聚合物中层状到柱状中间相的演化
影响因子：
5.5
作者：
J. Rueff;J. Barberá;B. Donnio;D. Guillon;M. Marcos;J. Serrano
通讯作者：
J. Serrano
树枝状液晶的分子理论：自组织和相变
影响因子：
--
作者：
A. G. Vanakaras;D. Photinos
通讯作者：
D. Photinos
碳硅烷液晶树枝状聚合物的结构研究。
DOI：
10.1021/jp805769w
发表时间：
2008
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
R. Richardson;E. Agina;N. Boiko;V. Shibaev;I. Grillo
通讯作者：
I. Grillo