Chirality Induction through Nano‐Phase Separation: Alternating Network Gyroid Phase by Thermotropic Self‐Assembly of X‐Shaped Bolapolyphiles

Chen, Changlong; Kieffer, R.; Ebert, Helgard; Prehm, Marko; Zhang, Rui‐bin; Zeng, Xiangbing; Liu, Feng; Ungar, Goran; Tschierske, Carsten

doi:10.1002/ange.201911245

Cited by 8 publications

(1 citation statement)

References 38 publications

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“…[18,19,20] For instance, Tschierske and Cheng reported some bolapolyphilic liquid crystals and the changes of the type of rod-like aromatic units and the length of lateral chains led to various mesophases including lamellar phases, honeycomb columnar phases and different cubic phases. [21,22,23,24] In addition, we also reported some rod-like molecules in which the change of the position of aromatic units led to the transition of mesophases, different AIE behaviors and stimulus-response behaviors. [25,26] Therefore, the exploration of the in uence of chemical structures of liquid crystalline molecules on the properties and the understanding of structure-property relationships would be important for the construction of different materials.…”

Section: Introductionmentioning

confidence: 72%

The effect of positional isomerism of cyano group of the rod-like mesogens on the liquid crystalline and optical characteristics

Liu,

Liang

et al. 2024

Preprint

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Two novel cyanostilbene-based rod-like mesogens named BI-CN-4 and BI-CHO-4 consisting of one terminal pyrene and one terminal alkyl chain were prepared by Suzuki coupling and Knoevenagel reactions. The influence of the positional isomerism of cyano group of cyanostilbene unit on the liquid crystalline characteristics, photophysical characteristics, and mechanochromism characteristics is explored by using POM, DSC, XRD, UV spectra, PL spectra, DFT and TD-DFT calculations. BI-CN-4 in which the cyano group is adjacent to the phenylpyrene unit exhibits monotropic smectic C phase, whereas BI-CHO-4 in which the cyano group is far away from the phenylpyrene unit exhibits enantiotropic smectic C phase. BI-CN-4 exhibits more distinct positive solvatochromism due to more distinct intramolecular charge transfer. Both compounds exhibit AIE or AIEE behavior and reversible mechanochromism behavior due to twisted molecular configurations. These results demonstrated that the distinct molecular design could endow organic molecules with multifunctional properties and potentials.

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Section: Introductionmentioning

confidence: 72%

The effect of positional isomerism of cyano group of the rod-like mesogens on the liquid crystalline and optical characteristics

Liu,

Liang

et al. 2024

Preprint

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Liquid Organic Frameworks: A Liquid Crystalline 8‐Connected Network with Body‐Centered Cubic Symmetry

Chen

Poppe

et al. 2020

Angewandte Chemie

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Liquid state self‐assembly is important for the understanding of the complex structures developed in abiogenesis and biogenesis as well as for numerous potential technological applications. Herein we report the first body‐centered cubic liquid crystalline phase with 8‐connected network topology and open octahedral network structure. It is formed by dynamic soft self‐assembly of X‐shaped polyphiles with oligo(para‐phenylene‐ethynylene) cores. The π‐conjugated rods with perfluorinated inner benzene rings form networks conjoined by eight‐way junctions, which are formed by nano‐segregated spheres involving hydrogen‐bonded polar end groups, while the branched aliphatic chains at opposite sides of the cores fill the continuum. This novel cubic phase is based on the I‐WP minimal surface separating the frameworks of polyaromatic cores from the most disordered chain segments. It can also be considered as a dense sphere packing. Such liquid organic frameworks, representing hybrids of sphere packings and networks could be of interest for organic photonics and other technologies.

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Geometry‐Directed Self‐Assembly of Polymeric Molecular Frameworks

et al. 2020

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Despite the significant advances in creating assembled structures from polymers, engineering the assembly of polymeric materials into framework structures remains an outstanding challenge. In this work, we present a facile strategy to construct polymeric molecular frameworks through the assembly of T-shape polymer-rod-sphere amphiphiles in the bulk state. Various frameworks are yielded as a result of delicate interplays among three components of the T-shape amphiphiles. The internal structure of frameworks was revealed by combining experimental investigations and computational simulations. The frameworks display good solutionprocessability, thermal stability, and uniform pore-forming capability, which endow the resultant frameworks with great potential in scalable fabrications.

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Chirality Induction through Nano‐Phase Separation: Alternating Network Gyroid Phase by Thermotropic Self‐Assembly of X‐Shaped Bolapolyphiles

Cited by 8 publications

References 38 publications

The effect of positional isomerism of cyano group of the rod-like mesogens on the liquid crystalline and optical characteristics

The effect of positional isomerism of cyano group of the rod-like mesogens on the liquid crystalline and optical characteristics

Liquid Organic Frameworks: A Liquid Crystalline 8‐Connected Network with Body‐Centered Cubic Symmetry

Geometry‐Directed Self‐Assembly of Polymeric Molecular Frameworks

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