142947-21-5Relevant articles and documents
Synthesis and investigation of polysubstituted triphenylenes with a predictable type of mesomorphism
Zemtsova,Syromyatnikova,Kotovich,Akopova
, p. 38 - 42 (2001)
This paper reports on synthesis and investigation of columnar mesophases of the new members of the homologous series of nitro and amino derivatives of hexaalkoxytriphenylenes, whose mesomorphism was predicted earlier. The forecast is in good agreement with the experimental data. The effect of the introduction of the donor and acceptor groups into the central fragment of triphenylene on the phase transition temperature, texture, and range of existence of columnar mesophases is examined. The predicting ability of the molecular parameters suggested previously for the series under analysis is discussed. It is found that introduction of a nitro group, which is a strong electron acceptor, into the central fragment of triphenylene lowers the melting temperature of the compound versus its analog and does not promote columnar mesomorphism in the lower nonmesomorphous homologs. At the same time, this slightly expands the range of existence of the mesophase in higher homologs.
Discotic-decorated gold nanoparticles
Kumar, Sandeep,Pal, Santanu K.,Lakshminarayanan
, p. 251/[579]-258/[586] (2005)
Several mixtures of hexanethiolate capped gold nanoparticles and discotic liquid crystals were prepared. The thermophysical properties of these mixtures were investigated using polarizing optical microscopy, differential scanning calorimetry and DC conduc
Carbon nanotubes in triphenylene and rufigallol-based room temperature monomeric and polymeric discotic liquid crystals
Bisoyi, Hari Krishna,Kumar, Sandeep
, p. 3032 - 3039 (2008)
In this article, after a brief account of the work carried out in the area of dispersion of carbon nanotubes in liquid crystals, we present the dispersion of functionalized single-wall carbon nanotubes in novel room temperature liquid crystalline discotic
The leading role of the steric hindrance effect and dipole-dipole interaction in superlattice nanostructures formed via the assembly of discotic liquid crystals
Zhang, Zhenhu,Yang, Huanzhi,Bi, Jingze,Zhang, Ao,Fang, Yi,Feng, Yuwen,An, Li,Liang, Lijuan,Zhang, Chunxiu,Pu, Jialing
, p. 20087 - 20094 (2018)
To reveal the relationships among molecular structures, self-assembly behavior and the organic electronic properties of discotic liquid crystals, 2-(neopentyloxy)-3,6,7,10,11-pentakis(pentyloxy)triphenylene (T5ON1) and 2-pivalate-3,6,7,10,11-penta-pentylo
Highly ordered columnar superlattice nanostructures with improved charge carrier mobility by thermotropic self-assembly of triphenylene-based discotics
Bi, Jingze,Wu, Hao,Zhang, Zhenhu,Zhang, Ao,Yang, Huanzhi,Feng, Yuwen,Fang, Yi,Zhang, Lina,Wang, Zhengran,Qu, Wentao,Liu, Feng,Zhang, Chunxiu
supporting information, p. 12463 - 12469 (2019/10/28)
A series of triphenylene esters with two ester groups at 2,3-, 2,7-, 2,6- and 3,6- substituent positions was successfully synthesized and fully investigated. Their self-assembly properties were exhaustively examined by DSC, POM, 1DXRD, 2DXRD, SAXS, TEM methods together with EDM and ESP calculations. It was unexpected that the 3,6-substituted triphenylene ester T5E36 formed an uncommonly helical hexagonal columnar superlattice structure made up of 91 right-handed helixes with a pitch of 60.3 ?. This helical superlattice structure was further studied by using transmission electron microscopy and the diameter of the T5E36 particles was found to be at the nanometer scale. Ultimately, the bipolar charge carrier mobility was measured by the time-of-flight method to be in the order of 10-1 cm2 V-1 s-1. The formation of this helical superlattice nanostructure no doubt improved their electronic properties and made them more attractive in organic electronics.
Unexpected beauty and diversity in the structures of three homologous 4,5-dialkoxy-1-ethynyl-2-nitrobenzenes: The subtle interplay between intermolecular C - H...O hydrogen bonds and alkyl chain length
Oburn, Shalisa M.,Bosch, Eric
, p. 814 - 819 (2017/10/10)
The synthesis, 1H and 13C NMR spectra, and X-ray structures are described for three dialkoxy ethynylnitrobenzenes that differ only in the length of the alkoxy chain, namely 1-ethynyl-2-nitro-4,5-dipropoxybenzene, C14H
