Achiral flexible liquid crystal trimers exhibiting gyroid-like surfaces in chiral conglomerate phases,Soft Matter

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Achiral flexible liquid crystal trimers exhibiting gyroid-like surfaces in chiral conglomerate phases
Soft Matter ( IF 2.9 ) Pub Date : 2017-08-29 00:00:00 , DOI: 10.1039/c7sm01499f
Haruna Sasaki _{1,

2,

3,

4,

5} , Yoichi Takanishi _{5,

6,

7,

8,

9} , Jun Yamamoto _{5,

6,

7,

8,

9} , Atsushi Yoshizawa _{1,

2,

3,

4,

5}

Affiliation

Chiral conglomerate phases have attracted much attention not only for the spontaneous mirror symmetry breaking but also for their nanostructures. We investigated both surface and bulk structures of a homologues series of an achiral liquid crystal trimer I-(n,m) exhibiting soft crystalline chiral conglomerate phases by atomic force microscopy (AFM) and scanning electron microscopy (SEM). The trimers were found to form bicontinuous networks. In particular, trimer I-(9,9) exhibited a single gyroid-like surface accompanying periodic distribution of dimples with a size of about 100 nm. It showed a sponge-like structure in the bulk of the material. The twist conformation of the flexible trimer I-(n,m) can cause layer deformation, which produces bicontinuous networks exhibiting optical activity.

中文翻译：

非手性柔性液晶三聚体在手性团聚相中显示出类陀螺样表面

手性团聚相不仅引起了自发的镜面对称性的破坏，而且由于其纳米结构而引起了人们的广泛关注。我们通过原子力显微镜（AFM）和扫描电子显微镜（SEM）研究了非手性液晶三聚体I-（n，m）的同系物序列的表面和本体结构，它们均显示出软晶体手性团聚体相。发现三聚体形成双连续网络。特别地，三聚体I-（9，9）表现出单个的类陀螺状表面，伴随着周期性分布的酒窝，其尺寸约为100nm。它在大部分材料中显示出海绵状结构。柔性三聚体I-（n，m）的扭曲构型会引起层变形，从而产生具有光学活性的双连续网络。

更新日期：2017-09-12

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