Search results for "PHENYLENE"
showing 10 items of 457 documents
1986
The molecular order and mobility of two liquid-crystalline polyacrylates with phenyl benzoate moieties as mesogenic side groups and (CH2)m spacers (m = 2 and m = 6) were investigated by pulsed 2H NMR. The mesogenic side groups were isotopically labelled at the terminal phenylene ring. In the glassy state the orientational distribution function was characterized from the angular dependence of the 2H NMR line shape of samples macroscopically ordered in their nematic phase by the 8,4 T magnetic field of an NMR spectrometer. It was found to be Gaussian with widths of ± 18,5° and ± 10,5° for the m = 2 frozen nematic and m = 6 frozen smectic system, respectively. The phenylene rings undergo 180° …
CCDC 815937: Experimental Crystal Structure Determination
2012
Related Article: S.Majumder, S.Dutta, L.M.Carrella, E.Rentschler, S.Mohanta|2011|J.Mol.Struct.|1006|216|doi:10.1016/j.molstruc.2011.09.011
CCDC 770746: Experimental Crystal Structure Determination
2011
Related Article: E.Nauha, A.Ojala, M.Nissinen, H.Saxell|2011|CrystEngComm|13|4956|doi:10.1039/c1ce05077j
CCDC 770750: Experimental Crystal Structure Determination
2011
Related Article: E.Nauha, A.Ojala, M.Nissinen, H.Saxell|2011|CrystEngComm|13|4956|doi:10.1039/c1ce05077j
CCDC 762570: Experimental Crystal Structure Determination
2010
Related Article: M.C.Munoz, G.Blay, I.Fernandez, J.R.Pedro, R.Carrasco, M.Castellano, R.Ruiz-Garcia, J.Cano|2010|CrystEngComm|12|2473|doi:10.1039/c001682a
[2,5-Bis(dipropylamino)-4-(hydroxymethyl)phenyl]methanol
2021
The centrosymmetric title compound, C22H36N2O2, was prepared in five steps from diethyl succinate. The dipropylamino groups are almost orthogonal to the central phenylenedimethanol ring [dihedral angle = 87.62 (9)°]. In the crystal, the molecules are connected by O—H...N hydrogen bonds, forming (101) layers separated by the propyl chains.
CCDC 724464: Experimental Crystal Structure Determination
2010
Related Article: E.Nauha, H.Saxell, M.Nissinen, E.Kolehmainen, A.Schafer, R.Schlecker|2009|CrystEngComm|11|2536|doi:10.1039/b905511h
CCDC 724470: Experimental Crystal Structure Determination
2010
Related Article: E.Nauha, H.Saxell, M.Nissinen, E.Kolehmainen, A.Schafer, R.Schlecker|2009|CrystEngComm|11|2536|doi:10.1039/b905511h
CCDC 724466: Experimental Crystal Structure Determination
2010
Related Article: E.Nauha, H.Saxell, M.Nissinen, E.Kolehmainen, A.Schafer, R.Schlecker|2009|CrystEngComm|11|2536|doi:10.1039/b905511h
Ethylene and phenylene bridged polysilsesquioxanes functionalized by amine and thiol groups as adsorbents of volatile organic compounds
2007
Abstract Ethylene and phenylene bridged polysilsesquioxane xerogels having amine and thiol groups attached to the surface have been obtained by the sol–gel method from 1,2-bis(triethoxysilyl)ethane or 1,4-bis(triethoxysilyl)benzene and functionalized silanes in the presence of an ammonium fluoride catalyst in an ethanol solution. The synthesized samples have a porous structure (700–850 m2/g) and a high content of functional groups (1.4–1.9 mmol/g). The obtained porous bridged polysilsesquioxanes exhibit a considerable affinity for adsorbing several organic compounds (n-hexane, n-heptane, benzene, cyclohexane, acetonitrile and triethylamine) from the gas phase. The sample with an ethylene br…