1276541-58-2Relevant academic research and scientific papers
Structure-property correlation of benzoyl thiourea derivatives as organogelators
Huang, Yao-Dong,Dong, Xue-Lin,Zhang, Li-Li,Chai, Wei,Chang, Ji-Young
, p. 43 - 48 (2013/02/23)
A series of N-benzoyl-N′-aryl thiourea derivatives (1-4) can form stable gels from a variety of organic solvents ranging from protic to aprotic or polar to apolar at concentrations below 5 mg/mL. The gelation properties and structures of the resulting gels were investigated by 1H-NMR, FTIR, UV-vis, SEM, and XRD. The gels were anion-responsive and the driving forces for its formation were the hydrogen bonding and van der Waals interaction. The SEM images of the xerogels prepared from the organogels formed in acetonitrile, cyclohexane and acetone showed a network of elongated fibers. The results of XRD suggested that the dry gels had a layer structure.
Mesomorphic behaviour of N-benzoyl-N′-aryl thioureas liquid crystalline compounds
Ili, Monica,Bucos, Madalina,Dumitracu, Florea,C?rcu, Viorel
, p. 1 - 6 (2011/04/14)
A series of N-benzoyl-N′-aryl thiourea derivatives bearing alkoxy groups in terminal positions have been prepared and investigated for their potential liquid crystals properties. It was found that only the compounds which have only two alkoxy chains show calamitic mesomorphic behaviour, with nematic, smectic A and C phases being displayed. The type and stability of these mesophases are greatly influenced by the alkyl chain length. Successive introduction of additional alkoxy groups on the benzoyl moiety led to a significant decrease of the clearing points and suppression of the mesogenic character. Using of branched alkyl chain, 2-ethyl-hexyl, instead of normal alkyl group, led to the disappearance of mesogenic behaviour together with the lowering of the clearing temperature. The influence of chain length and number of chains is discussed.
