Tuning liquid crystalline phase behaviour in columnar crown ethers by sulfur substituents?
Organic Chemistry Frontiers Pub Date: 2017-03-07 DOI: 10.1039/C7QO00077D
Abstract
Novel [15]crown-5 and [18]crown-6 o-terphenyls differing in number and position of sulfur in the side chains and their corresponding triphenylene analogues were synthesized via a nucleophilic aromatic displacement of fluoride as the key step. Except for one short chain derivative all other compounds showed enantiotropic columnar mesophases which were studied by DSC, POM and XRD (WAXS, SAXS). The presence of sulfur induced broad room temperature columnar mesophases. This effect was more pronounced for bend [15]crown-5 derivatives than for linear [18]crown-6 derivatives. Redox properties were mostly governed by the triphenylene moieties, showing stepwise oxidation of the individual triphenylene units.
Recommended Literature
- [1] Fatty acid eutectic mixtures and derivatives from non-edible animal fat as phase change materials? Pau Gallart-Sirvent,Marc Martín,Gemma Villorbina,Mercè Balcells,Aran Solé,Luisa F. Cabeza,Ramon Canela-GarayoaRSC Adv., 2017,7, 24133-24139 10.1039/C7RA03845C
- [2] Enantiocontrolled construction of sistodiolynne, an unusual polyketide from the wood-decay fungus Sistrema raduloides Chem. Commun., 1997, 767-768 10.1039/A700186J
- [3] Emerging enantiomeric resolution materials with homochiral nano-fabrications Ji-Ping WeiNanoscale, 2015,7, 11815-11832 10.1039/C5NR03048J
- [4] Evolution of dealloying induced strain in nanoporous gold crystals? Ross Harder,David C. Dunand,Ian McNultyNanoscale, 2017,9, 5686-5693 10.1039/C6NR09635B
- [5] Evolution of important glucosinolates in three common Brassica vegetables during their processing into vegetable powder and in vitro gastric digestion Nan Fu,Naphaporn Chiewchan,Xiao Dong ChenFood Funct., 2020,11, 211-220 10.1039/C9FO00811J
- [6] Enabling non-flammable Li-metal batteries via electrolyte functionalization and interface engineering? Jing Yu,Yu-Qi Lyu,Jiapeng Liu,Mohammed B. Effat,Junxiong WuJ. Mater. Chem. A, 2019,7, 17995-18002 10.1039/C9TA03784E
- [7] Enabling high-throughput single-animal gene-expression studies with molecular and micro-scale technologies Jason WanLab Chip, 2020,20, 4528-4538 10.1039/D0LC00881H
- [8] Dissociative electron attachment to HGaF4 Lewis–Br?nsted superacid Marcin Czapla,Jack SimonsPhys. Chem. Chem. Phys., 2018,20, 21739-21745 10.1039/C8CP04007A
- [9] Excellent kinetics of single-phase Gd-doped ceria fuel electrodes in solid oxide cells? Andreas Nenning,Manuel Holzmann,Jürgen Fleig,Alexander K. OpitzMater. Adv., 2021,2, 5422-5431 10.1039/D1MA00202C
- [10] Fe3O4/FeS2 heterostructures enable efficient oxygen evolution reaction? Xingqun Zheng,Lele Song,Xin Feng,Li Li,Zidong WeiJ. Mater. Chem. A, 2020,8, 14145-14151 10.1039/C9TA13775K
Journal Name：Organic Chemistry Frontiers
research_products
-
CAS no.: 89640-58-4
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)