797-71-7Relevant academic research and scientific papers
From Mesomorphic Phosphine Oxide to Clustomesogens Containing Molybdenum and Tungsten Octahedral Cluster Cores
C?rcu, Viorel,Molard, Yann,Amela-Cortes, Maria,Bentaleb, Ahmed,Barois, Philippe,Dorcet, Vincent,Cordier, Stéphane
, p. 10921 - 10925 (2015)
New clustomesogens (i.e., metal atom clusters containing liquid crystalline (LC) materials) have been obtained by grafting neutral cyanobiphenyl (CB)- or cholesteryl-containing tailor-made dendritic mesomorphic triphenylphosphine oxide ligands on luminesc
Phosphine-ligand decoration toward active and robust iron catalysts in LRP
Nishizawa, Keita,Ouchi, Makoto,Sawamoto, Mitsuo
, p. 3342 - 3349 (2013)
Phosphine ligands were designed to enhance the catalytic activity of iron(II) complexes [FeBr2(PR3)2] for metal-catalyzed living radical polymerization (LRP), and special efforts were directed to the improvement in catalyt
Self-assembly of Amphiphilic Porphyrins To Construct Nanoparticles for Highly Efficient Photodynamic Therapy
Jiang, Meiyu,Wu, Jiasheng,Liu, Weimin,Ren, Haohui,Zhang, Wenjun,Lee, Chun-Sing,Wang, Pengfei
, p. 11195 - 11204 (2021/06/01)
Hydrophobic photosensitizers greatly affect cell permeability and enrichment in tumors, but they cannot be used directly for clinical applications because they always aggregate in water, preventing their circulation in the blood and accumulation in tumor
Molecular Vises for Precisely Positioning Ligands near Catalytic Metal Centers in Metal-Organic Frameworks
Yan, Wei,Li, Shenhui,Yang, Tao,Xia, Yucong,Zhang, Xinrui,Wang, Chao,Yan, Zier,Deng, Feng,Zhou, Qianghui,Deng, Hexiang
, p. 16182 - 16187 (2020/10/26)
We report the construction of a molecular vise by pairing a tritopic phenylphosphorus(III) linker and a monotopic linker in opposite positions within a metal-organic framework. The angle between these linkers at metal sites is fixed upon changing the functionality in the monotopic linker, while the distance between them is precisely tuned. This distance within the molecular vise is accurately measured by 1H-31P solid-state nuclear magnetic resonance spectroscopy. This unveils the impact of the distance on catalytic performance without interference from electrostatic effects or changes in the angle of the ligand, which is unprecedented in classic organometallic complexes.
Preparation method of high-reproducibility tris(4-carboxybiphenyl)phosphine
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, (2020/11/23)
The invention relates to the technical field of organic methodology, and relates to a preparation method of high-reproducibility tris(4-carboxybiphenyl)phosphine. The preparation method comprises thefollowing steps: reacting a hydroxyl-substituted phosphorus precursor with p-toluenesulfonyl chloride to form a compound, and carrying out a Suzuki coupling reaction on the compound to obtain anmethylester compound of a pentavalent phosphorus ligand; and carrying out chlorosilane reduction and hydrolysis to obtain the high-purity tris(4-carboxylbiphenyl)phosphine. The preparation method of tris(4-carboxyl biphenyl)phosphine has high reproducibility, and avoids using of butyl lithium and other high-risk organic reagents to synthesize brominated precursors. The preparation method of tris(4-carboxyl biphenyl)phosphine is high in yield and suitable for large-scale production.
Molecular tweezers based on trivalent phosphine, preparation method of molecular tweezers, metal-molecular tweezers catalyst, and preparation method and application of metal-molecular tweezers catalyst
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, (2020/12/14)
The invention relates to the technical field of inorganic-metal organic crossing and relates to the technical field of molecular tweezers, in particular to molecular tweezers based on trivalent phosphine, a preparation method of the molecular tweezers, a metal-molecular tweezer catalyst, a preparation method of the metal-molecular tweezer catalyst and an application of the metal-molecular tweezercatalyst, the molecular tweezer based on trivalent phosphine is named as P-MV-PCN-521-R, and R is any one of benzoic acid, p-nitrobenzoic acid, formic acid, p-methylbenzoic acid and dichloroacetic acid. The molecular tweezers based on the trivalent phosphine have distance adjustability. The trivalent phosphine-based metal-molecular tweezer catalyst provided by the invention has a high crystallinesurface area and a high specific surface area. The trivalent phosphine-based metal-molecular tweezer catalyst has good chemical stability and thermal stability, and is a primary condition for applyingthe trivalent phosphine-based metal-molecular tweezer catalyst to the actual field. The trivalent phosphine-based metal-molecular tweezer catalyst with adjustable distance provided by the invention has good selectivity for bromination of aromatic compounds.
Multifunctional crosslinking agent, crosslinked polymer, and method of making same
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, (2019/06/27)
A multifunctional crosslinking agent, a crosslinked polymer, and a method of making the same are disclosed. The multifunctional crosslinking agent, which may be used to crosslink amine-terminated polyamides, polyimides, or poly(amide-imide)s, includes thr
Reversible Covalent and Supramolecular Functionalization of Water-Soluble Gold(I) Complexes
Kemper, Benedict,von Gr?ning, Maximilian,Lewe, Vanessa,Spitzer, Daniel,Otremba, Tobias,Stergiou, Natascha,Schollmeyer, Dieter,Schmitt, Edgar,Ravoo, Bart Jan,Besenius, Pol
, p. 6048 - 6055 (2017/05/08)
The ligation of gold(I) metalloamphiphiles with biomolecules is reported, using water-soluble AuI-N-alkynyl substituted maleimide complexes. For this purpose, two different polar ligands were applied: 1) a neutral, dendritic tetraethylene glycol-functionalized phosphane and 2) a charged, sulfonated N-heterocyclic carbene (NHC). The retro Diels–Alder reaction of a furan-protected maleimide gold(I) complex, followed by cycloaddition with a diene-functionalized biotin under mild conditions leads to a novel gold(I) metalloamphiphile. The strong streptavidin–biotin binding affinity in buffered aqueous solution of the resulting biotin alkynyl gold(I) phosphane conjugate remains intact. The cytotoxicity of the biotinylated gold(I) complex against a T47D human breast cancer cell line is higher than for cisplatin.
Multifunctional crosslinkers for shape-memory polyimides, polyamides and poly(amide-imides) and methods of making the same
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Page/Page column 8, (2013/10/08)
Multifunctional amine crosslinkers that may be used to create crosslinked polyimide, polyamide, and poly(amide-imide) polymers and films having shape memory properties at elevated temperatures and methods of making the same.
REACTIVE FLAME RETARDANT AND FLAME-RETARDANT RESIN PROCESSED ARTICLE
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, (2009/03/07)
Disclosed is a reactive flame retardant which provides a resin with excellent flame retardance even when it is added in a small amount while being prevented from bleedout. Also disclosed is a flame-retardant resin processed article obtained by using such a reactive flame retardant. An organophosphorus compound represented by the general formula (I) below, wherein at least one or more of X1-X3 represent a group containing phosphorus and having a terminal unsaturated group, is used as a reactive flame retardant which is reactive with resins. A flame-retardant resin processed article can be obtained by solidifying the resin composition containing the organophosphorus compound and then reacting it through heating or application of radiation.
