14142-82-6Relevant academic research and scientific papers
Gas chromatographic and infrared studies of 4′-cyano-4-biphenyl 4-(4-pentenyloxy)benzoate coated on porous silica
Zhou,Jaroniec,Hann,Gllpin
, p. 1454 - 1458 (1994)
The physical properties and the solute-surface interactions of porous silica modified with either the liquid crystal 4′-cyano-4-biphenyl 4-(4-pentenyloxy)benzoate (CBPB) or the structurally similar compound 4-biphenyl 4-(4-pentenyloxy)benzoate (BPB) have
Improved preparation of an epoxy substituted reactive mesogen
Wilkinson, Mark C.,Higson, Matthew
, p. 75 - 78 (2017)
An improved manufacturing process was developed for the epoxy substituted mesogen 1 useful for the preparation of liquid crystalline materials. Notable features were telescoping of reactions, replacement of DCC with CDI for formation of a sensitive diaryl
Rhodium(III)-Catalyzed Synthesis of Skipped Enynes via C(sp3)–H Alkynylation of Terminal Alkenes
Della-Felice, Franco,Zanini, Margherita,Jie, Xiaoming,Tan, Eric,Echavarren, Antonio M.
supporting information, p. 5693 - 5698 (2021/02/09)
The RhIII-catalyzed allylic C?H alkynylation of non-activated terminal alkenes leads selectively to linear 1,4-enynes at room-temperature. The catalytic system tolerates a wide range of functional groups without competing functionalization at other positions. Similarly, the vinylic C?H alkynylation of α,β- and β,γ- unsaturated amides gives conjugated Z-1,3-enynes and E-enediynes.
Synthesis and characterization of liquid crystalline organosiloxanes containing 4-methoxyphenyl 4-(2-alkenyloxy)benzoate
Chen, Cheng-Chih,Lin, Chih-Hung
, p. 1270 - 1274 (2016/04/10)
A series of new organosiloxane liquid crystalline materials based on the 4-methoxyphenyl-4-(ù-alkenyloxy)benzoate as mesogenic units have been synthesized and their mesomorphic and physical properties have been characterized. A series of new disiloxanes and trisiloxanes contain 4-methoxyphenyl 4-(ù-alkenyloxy)benzoate as mesogenic these were synthesized by addition of 4-methoxyphenyl 4-(ù-alkenyloxy)benzoate moiety to pentamethylhydrodisiloxane or heptamethylhydrotrisiloxane catalyzed by platinum divinyltetramethyldisiloxane complex. The thermal properties of this new series of thermotropic liquid-crystalline siloxanes were studied by differential scanning calorimetry and polarized optical microscope. Disiloxane series compounds were not showed any liquid crystal phase. Trisiloxanes series compounds exhibited nematic liquid crystal phase. The siloxane molecule helped to reduce the melting temperature. The thermal properties of the new siloxane series exhibited a pronounced odd-even effect with the length of alkyl segment.
Surface-initiated ring-opening metathesis polymerization (SI-ROMP): Synthesis and electropolymerization of terthiophene-functionalized olefin peripheral dendrons
Jiang, Guoqian,Ponnapati, Ramakrishna,Pernites, Roderick,Felipe, Mary Jane,Advincula, Rigoberto
, p. 10262 - 10274 (2011/08/04)
We report on the synthesis and electrodeposition of peripheral olefin dendrons with electropolymerizable focal point terthiophene units. These films were utilized for surface initiated ring-opening metathesis polymerization (SI-ROMP) of norbornene to form
SHAPE MEMORY MAIN-CHAIN SMECTIC-C ELASTOMERS
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Page/Page column 8-9, (2009/10/01)
Shape memory main-chain smectic-C elastomers are described, as are methods for their preparation and monomers used in such methods. The elastomers are prepared by hydrosilylation of a reaction mixture including a liquid crystalline diene, a crosslinking agent, and a bis(silyl hydride) compound. The elastomers exhibit shape-memory properties and spontaneously reversible shape changes. They are useful for fabrication of shape memory articles including, for example, implantable medical devices, contact lenses, reversible embossing media, and Fresnel lenses.
Silicon-containing polyphilic bent-core molecules: The importance of nanosegregation for the development of chirality and polar order in liquid crystalline phases formed by Achiral molecules
Keith, Christina,Reddy, R. Amaranatha,Hauser, Anton,Baumeister, Ute,Tschierske, Carsten
, p. 3051 - 3066 (2007/10/03)
Polyphilic molecules composed of a bent aromatic core, oligo(siloxane) units, and alkyl segments were synthesized, and the self-organization of these molecules was investigated. Most materials organize into polar smectic liquid crystalline phases. The swi
Ureido or carbamate derivatives of crown ethers and of silicon usable for preparing supports intended for the separation by chromatography of metal cations and of organic molecules comprising amine functional groups
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Page/Page column 11, (2008/06/13)
The invention relates to ureido or carbamate derivatives of crown ethers and of silicon of formula: These derivatives can be grafted to silica gel for the purpose of obtaining supports for the chromatographic separation of cations or of molecules compris
Tailored phase transitions via mixed-mesogen liquid crystalline polymers with silicon-based spacers
Rousseau, Ingrid A.,Qin, Haihu,Mather, Patrick T.
, p. 4103 - 4113 (2007/10/03)
Control over thermotropic phase behavior in low-Tg main-chain liquid crystalline polymers (LCPs) is desired for a variety of applications, including soft actuation when cross-linked. Here, we describe the synthesis of new silicon-based main-cha
Induction of smectic layering in nematic liquid crystals using immiscible components. 1. Laterally attached side-chain liquid crystalline poly(norbornene)s and their low molar mass analogs with hydrocarbon/fluorocarbon substituents
Arehart, Stephen V.,Pugh, Coleen
, p. 3027 - 3037 (2007/10/03)
{5-[[[2',5'-Bis[(4''-(n-(perfluoroalkyl)alkoxy)benzoyl)oxy]benzyl]oxy ]carbonyl]bicyclo[2.2.1]hept-2-ene]s were polymerized by ring-opening metathesis polymerization in THF at 40°C using Mo(CHCMe2Ph)(N-2,6(i)Pr2Ph)(O(t)Bu)2/sub
