Combination of ionic self-assembly and hydrogen bonding as a tool for the synthesis of liquid-crystalline materials and organogelators from a simple building blockElectronic supplementary information (ESI) available: IR, NMR, DSC and TGA data of the organic core and complexes. See http://www.rsc.org/suppdata/cc/b3/b303552b/

2003 ◽  
pp. 1958 ◽  
Author(s):  
Franck Camerel ◽  
Charl F. J. Faul
2019 ◽  
Vol 43 (18) ◽  
pp. 7099-7108 ◽  
Author(s):  
D. R. Vinayakumara ◽  
K. Swamynathan ◽  
Sandeep Kumar ◽  
Airody Vasudeva Adhikari

A series of prospective columnar liquid crystalline materials derived from novel organoboron complexes has been developed by virtue of their application in organic electronic devices.


2000 ◽  
Vol 628 ◽  
Author(s):  
Georg H. Mehl ◽  
Ralf Elsäβer ◽  
Keith J. Shepperson ◽  
Adam Thornton ◽  
John W. Goodby

ABSTRACTIn recent years great advances have been made in the synthesis of organic-inorganic hybrid materials, whether they are oligomeric, multipodal, polymeric or dendritic in structure. Of particular interest are liquid-crystalline systems, as the control of the soft self-assembly behaviour of these systems allows for the addressing of the macroscopic properties of these materials.The investigations of silsesquioxane and siloxane cores decorated with suitable organic groups of linear and branched structures leading to liquid-crystalline phase behaviour is presented. The structural and chemical features which govern the phase behaviour will be discussed. Important features are the size, geometry, structure and flexibility of the inorganic core, the flexibility, branching and length of the spacer linking inorganic cores and the organic groups, which promote liquid-crystalline phase behaviour. The effects of a variety of mesogenic structures on the liquid-crystalline phase behaviour and stability range will be discussed.


RSC Advances ◽  
2015 ◽  
Vol 5 (11) ◽  
pp. 8056-8062 ◽  
Author(s):  
Yuki Arakawa ◽  
Sungmin Kang ◽  
Junji Watanabe ◽  
Gen-ichi Konishi

A hydrogen-bonding-tolane-based liquid crystalline material with an alkylsulfanyl group was synthesized, which exhibited a long-range correlated mesophase compared with analogs with alkyl and alkoxy groups.


2015 ◽  
Vol 3 (5) ◽  
pp. 985-989 ◽  
Author(s):  
J. Guilleme ◽  
J. Aragó ◽  
E. Ortí ◽  
E. Cavero ◽  
T. Sierra ◽  
...  

The self-assembly of axial dipolar subphthalocyanine molecules in the presence of electric fields leads to uniaxially oriented columnar liquid crystalline materials that exhibit permanent polarization.


Crystals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 701 ◽  
Author(s):  
Hoda A. Ahmed ◽  
Mohamed Hagar ◽  
Omaima A. Alhaddad ◽  
Ayman A. Zaki

Nonlinear architecture liquid crystalline materials of supramolecular 1:1 H-bonded complexes (I/II and I/III) were prepared through a self-assembly intermolecular interaction between azopyridine (I) and 4-n-alkoxybenzoic acid (II) as well as 4-n-alkoxyphenylazo benzoic acid (III). The H-bond formation of the prepared supramolecular hydrogen bonded (SMHB) complexes was confirmed by Fourier-transform infrared spectroscopy (FT-IR) and differential scanning calorimetry (DSC). Optical and mesomorphic behaviors of the prepared complexes were studied by polarized optical microscopy (POM) as well as DSC. Theoretical calculations were performed by the density functional theory (DFT) and used to predict the molecular geometries of the synthesized complexes, and the results were used to explain the experimental mesomorphic and optical properties in terms of their estimated thermal parameters. Ordinary and extraordinary refractive indices as well as birefringence at different temperatures were investigated for each sample using an Abbe refractometer and modified spectrophotometer techniques. Microscopic and macroscopic order parameters were calculated for individual compounds and their supramolecular complexes.


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