《New complexes of liquid crystal discotic triphenylenes: induction of the double gyroid phase》 was written by Otmakhova, O. A.; Piryazev, A. A.; Bondarenko, G. N.; Shandryuk, G. A.; Maryasevskaya, A. V.; Merekalov, A. S.; Ivanov, D. A.; Talroze, R. V.. Electric Literature of C3H7BrOThis research focused ontriphenylene discotic liquid crystal preparation phase transition self assembly. The article conveys some information:
Electron donor-acceptor liquid crystals have been attracting considerable attention due to possible applications in optoelectronics and photonics. The creation of such charge transfer complexes is a powerful and flexible instrument for modifying the structures and properties compared to those of the initial components. In the present work, such an approach is exemplified on new complexes formed via non-covalent interactions of triphenylene discotics, namely, 2,3,6,7,10,11-hexakis(pentyloxy) triphenylene (H5T) and 2-(acryloyloxypropyloxy)-3,6,7,10,11-pentapentylox-triphenylene (TPh-3A), with an electron acceptor, β-(2,4,7-trinitro-9-fluorenylideneaminooxy) propionic acid (TNF-carb). The structure of thin supported films of H5T, TPh-3A and their blends with TNF-carb was investigated by grazing-incidence wide-angle X-ray scattering using a synchrotron source. At room temperature, the pristine discotics crystallize in orthorhombic unit cells whereas the self-assembly of H5T and TPh-3A with TNF-carb results in a double gyroid and hexagonal phases, resp. Formation of the double gyroid phase with the lattice parameter of 36.5 Å is driven by phase separation between the aromatic and alkyl regions of the system. It is supposed that the TNF-carb mols. of the complex are positioned in the nodes of the structure while the H5T mols. are located in the struts adjoining the nodes via triple junctions. For the hexagonal crystal of the TPh-3A/TNF-carb complex, the acceptor mols. are likely located in the interstices between the neighboring supramol. columns of TPh-3A. The mol. structures of the blends were also explored by means of FTIR spectroscopy. A detailed FTIR spectra anal. illustrates fine changes in inter-mol. bonds. For example, the initially dimerized acceptor mols. totally disappear in the complex structures whereas in TPh-3A/TNF-carb addnl. H-bonds between the carboxylate group in TNF-carb and the ester group of TPh-3A form. The exptl. data allows putting forward possible mol. models of the complex structures. The experimental process involved the reaction of 3-Bromopropan-1-ol(cas: 627-18-9Electric Literature of C3H7BrO)
3-Bromopropan-1-ol(cas: 627-18-9) is used in the synthesis of fluorescent halide-sensitive quinolinium dyes, chiral, quaternary prolines through cyclization of quaternary amino acids and molten salt-polymers. It is utilized for the study of micellar media and in microemulsions based on cationic or a nonionic surfactant by reacting with phenols.Electric Literature of C3H7BrO
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