1206159-46-7Relevant academic research and scientific papers
Controlling Mirror Symmetry Breaking and Network Formation in Liquid Crystalline Cubic, Isotropic Liquid and Crystalline Phases of Benzil-Based Polycatenars
Reppe, Tino,Poppe, Silvio,Tschierske, Carsten
supporting information, p. 16066 - 16079 (2020/11/02)
Spontaneous development of chirality in systems composed of achiral molecules is important for new routes to asymmetric synthesis, chiral superstructures and materials, as well as for the understanding of the mechanisms of emergence of prebiotic chirality. Herein, it is shown that the 4,4′-diphenylbenzil unit is a universal transiently chiral bent building block for the design of multi-chained (polycatenar) rod-like molecules capable of forming a wide variety of helically twisted network structures in the liquid, the liquid crystalline (LC) and the crystalline state. Single polar substituents at the apex of tricatenar molecules support the formation of the achiral (racemic) cubic double network phase with Ia (Formula presented.) d symmetry and relatively small twist along the networks. The combination of an alkyl chain with fluorine substitution leads to the homogeneously chiral triple network phase with I23 space group, and in addition, provides a mirror symmetry broken liquid. Replacing F by Cl or Br further increases the twist, leading to a short pitch double gyroid Ia (Formula presented.) d phase, which is achiral again. The effects of the structural variations on the network structures, either leading to achiral phases or chiral conglomerates are analyzed.
Charge-based and charge-free molecular assemblies comprising π-extended derivatives of anion-responsive acyclic oligopyrroles
Bando, Yuya,Sakamoto, Shohei,Yamada, Ippei,Haketa, Yohei,Maeda, Hiromitsu
supporting information; experimental part, p. 2301 - 2303 (2012/05/04)
Assemblies comprising anion complexes of π-extended oligopyrrole derivatives and counter cations, as well as those of anion-free receptor molecules, exhibited the formation of mesophases based on columnar structures using electrostatic and π-π interactions. The Royal Society of Chemistry.
Metallomesogens based on platinum(ii) complexes: Synthesis, luminescence and polarized emission
Wang, Yafei,Liu, Yu,Luo, Jian,Qi, Hongrui,Li, Xiaoshuang,Nin, Meijun,Liu, Ming,Shi, Danyan,Zhu, Weiguo,Cao, Yong
, p. 5046 - 5051 (2011/06/28)
Two series of heteroleptic cyclometalated platinum(ii) complexes [(C nOppy)Pt(acac) and (CnOFppy)Pt(acac)] have been prepared. Their liquid-crystal and optophysical properties were studied, in which C nOppy is 2-(4-alkoxyp
