7158-32-9Relevant articles and documents
Synthesis and characterization of liquid crystalline polyester/graphene and a study of their properties
Hu, Wu-Quan,Zhu, Zong-Zhen,Jin, Jun,Dong, Zheng-Ping,Zhong, Xing,Zhou, Jing-Hui,Da, Shi-Jun,Li, Rong
, p. 2477 - 2483 (2012)
A new rod-like thermotropic liquid crystalline polyester (TLCP) material and its nanocomposites based on different concentrations of graphene were synthesized by in-situ high-temperature solution polymerization. The resulting nanocomposites were characterized using XRD, microscopic analysis (POM, SEM, and TEM), spectroscopic analysis (FT-IR, UV-Vis, and fluorescence), and thermal analysis (TGA and DSC). The XRD and POM methods showed that the composite materials exhibited only the nematic phase. The TEM images revealed that the graphene were distributed in the polymer with sizes ranging from 100 to 200 nm. The absorption spectroscopy data showed that the electronic properties of graphene were mostly retained without damaging their two-dimensional electronic properties, together with the analysis of the maximum absorption spectrum and concentration of the composites in terms of the Lambert-Beer law. The fluorescence from the TLCP moiety was almost completely quenched and red shifted by graphene, indicating that the linkage mode facilitated effective energy and electron transfer between the rod-like TLCP and the extended .-system of graphene. Therefore, this novel nanocomposite material exhibits excellent thermal properties based on the thermogravimetric analysis. Copyright
Circularly Polarized Luminescence of Achiral Metal–Organic Colloids and Guest Molecules in a Vortex Field
Huang, Jian-Cai,Ye, Guang-Ming,Yu, Maoxing,Huang, Ruishan,Zhao, Zujin,Qin, Anjun,Wu, Shu-Ting,Xie, Zenghong
supporting information, p. 6760 - 6766 (2021/03/19)
Recently, scientists have reported a range of chiral fluorescence materials or chiral composites that can emit circularly polarized luminescence. Herein, two achiral metal–organic colloidal solutions were studied, showing active circularly polarized luminescence, which is observed in vortex stirring. The absolute values for glum are 0.05 and 0.03 and the plus or minus sign of glum depends on the colloidal structure and stirring direction, which make the property easy to manipulate. Further, the host–guest interaction study suggests both electrostatic interactions and coordination bonding may influence the chiroptical property from the colloidal solution to the guest molecule. Rhodamine 6G and its carboxylic acid derivative exhibit good quantum yields and acceptable glum values in the colloidal solution.
Zn(ii) and Cd(ii) coordination polymers with a new angular bis-pyridyl-bis-amide: Synthesis, structures and sensing properties
Chen, Jhy-Der,Hu, Ji-Hong,Lee, Wei-Te,Yang, Xiang-Kai
, p. 4486 - 4493 (2021/07/06)
Zn(II) and Cd(II) coordination polymers constructed from a new angular bis-pyridyl-bis-amide ligand and naphthalene-1,4-dicarboxylic acid (1,4-H2NDC), {[Zn2(L)(1,4-NDC)2]·2H2O} [L = 4,4′-oxybis(N-(pyridin-3-ylmethyl)benzamide)], 1, and {[Cd2(L)(1,4-NDC)2]·EtOH}, 2, have been solvothermally synthesized and structurally characterized by using single-crystal X-ray diffraction. While complex 1 displays a 2D double layer with the rare (46·64)-5 L4 topology, complex 2 shows a 3D framework with a new (4·5·6)(45·55·69·7·8) topology. Both complexes 1 and 2 display luminescence properties and 2 exhibits a high sensitivity toward the detection of Fe3+ ions with a Ksv value of 1.9 × 104 M-1. The quenching effect can most probably be ascribed to the interactions between the metal ions and the amide carbonyl oxygen atoms.
Synthesis of 4,4′-Oxydibenzoic Acid Amides and Sulfonamides Containing 2-Arylaminopyrimidine Moieties
Ignatovich, Zh. V.,Ermolinskaya,Petushok,Katok, Ya. M.,Koroleva
, p. 2092 - 2097 (2021/02/09)
Abstract: New 4,4′-oxydibenzamides and sulfamoyl derivatives of 4,4′-oxydibenzoic acid containing pharmacophoric 2-arylaminopyrimidine fragments in the amide moiety have been synthesized. Acylation of amines of the pyrimidine series with 2-chlorosulfonyl-substituted 4,4′-oxydibenzoic acid gave the corresponding sulfonamides. Arylaminopyrimidine derivatives of 4,4′-oxydibenzamide were obtained in 75–87% yield by acylation of 3-{[4-(pyridin-3-yl)pyrimidin-2-yl]amino}anilines with 4,4′-oxydibenzoyl chloride. The reactivity of 4,4′-oxydibenzoyl chloride toward amines is discussed.
(octylphenol polyoxyethylene ether disubstituted) dicarboxylic diphenyl ether nonionic gemini surfactant and synthesis thereof
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Paragraph 0053; 0054, (2019/05/08)
The invention discloses an (octylphenol polyoxyethylene ether disubstituted) dicarboxylic diphenyl ether nonionic gemini surfactant and synthesis thereof. The (octylphenol polyoxyethylene ether disubstituted) dicarboxylic diphenyl ether nonionic gemini surfactant adopts a structural formula as follows: FORMULA, and is prepared through a two-step reaction as follows: S1, performing an acyl chlorination reaction on 4,4'-dicarboxylic diphenyl ether to obtain 4,4'-diformyl chloride diphenyl ether; S2, performing an esterification reaction on the 4,4'-diformyl chloride diphenyl ether and octylphenol polyoxyethylene ether (OP-10) to obtain a target product (octylphenol polyoxyethylene ether disubstituted) dicarboxylic diphenyl ether. The surfactant is expected to be applied to alkali/surfactantand polymer/surfactant binary compound flooding fluids and an alkali/surfactant/polymer ternary compound flooding fluid, a microemulsion emulsifier and the like in tertiary oil recovery and can be also compounded with a common surfactant to reduce the using cost, so that a condition is created for scale application thereof.
Styrene-based compound and preparation method and application thereof
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Paragraph 0042; 0044; 0046; 0048; 0049; 0051; 0052, (2018/07/15)
The invention discloses a styrene-based compound, which is at least a 5-(4-(4-(3,5-dyhydroxystyryl)phenoxyl)styryl)-1,3-benzenediol compound of the following structural formula. The invention also discloses a preparation method and application of the 5-(4-(4-(3,5-dyhydroxystyryl)phenoxyl)styryl)-1,3-benzenediol compound of the structural formula. The 5-(4-(4-(3,5-dyhydroxystyryl)phenoxyl)styryl)-1,3-benzenediol compound disclosed by the invention is used for inhibiting the abnormal growth of B-cells by lowering AKT/mTOR signal conduction. The formula is shown in the specification.
Dental adhesive composition
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Paragraph 0232; 0233, (2017/10/11)
PROBLEM TO BE SOLVED: To provide a dental adhesive composition which does not have lower affinity to a tooth or the like and has high adhesive strength. SOLUTION: The present invention relates to the composition comprising a polymerizable monomer represented by general formula (1), and an acid group-containing polymerizable monomer. [X is a divalent group; Ar1 and Ar2 are each independently a divalent to tetravalent aromatic group; L1 and L2 are each independently a divalent to tetravalent hydrocarbon group having 2 to 60 atoms in the main chain; R1 and R2 are each independently H or methyl; or, m1, m2, n1 and n2 are each independently an integer of 1 to 3] SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
DENTAL CURABLE COMPOSITION
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Paragraph 0188-0189, (2017/10/13)
PROBLEM TO BE SOLVED: To provide a dental curable composition that comprises a polymerizable monomer, a cured product of which has excellent mechanical strength, and which has low viscosity and excellent handleability even in room temperature environment, and further has excellent operability. SOLUTION: A dental curable composition comprises (A) polymerizable monomer represented by formula (1), (B) polymerization initiator, and (C) organic-inorganic composite filler, where X is a divalent group; Ar1 and Ar2 each are an aromatic; L1 and L2 each are a hydrocarbon with the main chain consisting of 2-60 atoms; R1 and R2 independently represent H or methyl; m1, m2, n1 and n2 independently an integer of 1-3]. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPO&INPIT
Powder-hardenable dental material (by machine translation)
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Paragraph 0117, (2017/10/27)
[Problem] powder admixture of gradual increase of viscosity of the paste to ensure initial liquid, high compatibility and mechanical strength and accuracy of powder-liquid hardenable dental material. (1) radical polymerizable monomer having the general formula [a] shown, and (b) a radically polymerizable monomer other than the radical-polymerizable monomer containing a powder-liquid hardenable dental material. [Drawing] no (by machine translation)
DENTAL CURABLE COMPOSITION
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Paragraph 0186, (2017/11/01)
PROBLEM TO BE SOLVED: To provide a dental curable composition that promptly completes polymerization upon light irradiation. SOLUTION: A dental curable composition comprises: (A) a polymerizable monomer represented by general formula (1); and (B) a photoinitiator containing B1) an α-diketone compound, B2) a photoacid generator and B3) an aromatic amine compound. [X is -O-; Ar1 and Ar2 are divalent to tetravalent aromatic groups; L1 and L2 are divalent to tetravalent C2-60 hydrocarbon groups; R1 and R2 are hydrogen or methyl groups; and m1, m2, n1 and n2 are integers from 1 to 3.] SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT