solid-state at room temperature, indicated that the tighter zinc binding in the solid state leads to the augmentation of fluorescence. The ORCA molecular structure optimization calculations for 1·2H2O suggest a slight opening of the cage structure in non-polar solvents while in polar solvents the cage is tightened. Toxicity analysis with Caco-2 cells indicates that the molecule is readily tolerated
A novel macrocyclic Cu(ii)-organophosphonate building block displaying high temperature magnetic ordering, and the structure of [Cu(2,2′-bpy)}2(HO3P(CH2)8PO3H2)4] (1).
The changes in NMRchemicalshifts are consistent with the solid-state orientation in which the phosphonic acid groups of OA are oriented externally to the carbonyl portals and the intervening alkyl chain lies within the cavity of Q[7]. However, the solution study also inferred possible formations of other complexes in solution. This work highlighted the advantage of combiningsolidstate and solution
通过固态和溶液相结合的研究,对葫芦[7]脲 (Q[7]) 中 1,8-辛烷二膦酸 (OA) 的包含情况进行了研究。 OA和Q[7]在水中反应形成1:1的包合物1,为白色结晶材料。同步加速器单晶 X 射线衍射揭示了其详细结构,并通过拉曼光谱和两种有机分子的特征振动模式进行了验证。随后的1 H 溶液 NMR 数据支持在水溶液中形成 1:1 包合物。 NMR 化学位移的变化与固态取向一致,其中 OA 的膦酸基团在羰基门户外部取向,并且中间的烷基链位于 Q[7] 的空腔内。然而,溶液研究还推断溶液中可能形成其他络合物。这项工作强调了结合固态和溶液研究的优势,以揭示涉及复杂夹杂现象的详细分子相互作用。 图形概要
Verfahren zur Herstellung von Polyethercarbonatpolyolen
申请人:Bayer MaterialScience AG
公开号:EP2865700A1
公开(公告)日:2015-04-29
Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Polyethercarbonatpolyolen durch Anlagerung von Alkylenoxiden und Kohlendioxid an eine oder mehrere H-funktionelle Startersubstanz(en) in Gegenwart eines Doppelmetallcyanid-Katalysators oder in Gegenwart eines Metallkomplexkatalysators auf Basis der Metalle Zink und/oder Cobalt, dadurch gekennzeichnet, dass eine oder mehrere H-funktionelle Startersubstanz(en) enthaltend mindestens 1000 ppm Komponente K während der Reaktion kontinuierlich in den Reaktor zudosiert werden, wobei Komponente K ausgewählt ist aus mindestens einer Verbindung, die eine Phosphor-Sauerstoff-Bindung enthält, oder einer Verbindung des Phosphors, die durch Reaktion mit OH-funktionellen Verbindungen eine oder mehrere P-O-Bindung(en) ausbilden kann.
本发明的主题是在双金属氰化物催化剂或基于金属锌和/或钴的金属络合物催化剂存在下,通过将氧化烯和二氧化碳加到一种或多种 H 功能引发剂物质上制备聚醚碳酸酯多元醇的工艺,其特征在于在反应过程中,一种或多种含有至少 1000ppm K 组分的 H-官能团引发剂物质被连续地计量到反应器中,K 组分选自至少一种含有磷-氧键的化合物或一种通过与 OH-官能团化合物反应可形成一个或多个 P-O 键的磷化合物。
3d filter for prevention of stroke
申请人:Frid, Noureddine
公开号:EP2987463A1
公开(公告)日:2016-02-24
Implantable endoluminal prosthesis (1) consisting of a braided framework (20) defining a cylindrical lumen (21) devoid of impermeable membrane, said braided framework (20) being self-expandable, comprising a plurality of layers (22, 23, 24) of wires (25) made of biocompatible material, each layer forming a mesh, the meshes forming a lattice with a plurality of wires (2) of given layers (22, 23, 24), the lattice defining polygonal opening units (26) when observed normal to a wall of the implantable endoluminal prosthesis (1), the diameter (Ø25) of wire (25) being at least 50 µm and at most 150 µm, the maximal diameter (Ø27) of the inscribed circle (27) of the polygonal opening units (26) being at least 75 µm and at most 200 µm in fully expanded state, wherein :
• The braided framework (20) consists of at least 128 and at most 512 wires (25);
• the ratio (T1/Ø25) of the thickness (T1) of a wall of said implantable endoluminal prosthesis (1) to the diameter (Ø25) of wire (25) is at least 5.5;
• in a fully expanded state, the surface coverage ratio (SCR) of said braided framework (20) is more than 50% and less than 90%;
• when the implantable endoluminal prosthesis (1) is deployed in a curved lumen having a H/W ratio between 0.5 and 0.9, the maximal diameter (Ø27) of inscribed circle of opening units is at least 75 µm and at most 200 µm, the length-related compression ratio (LCR) being between 15% and 40%, and the surface coverage ratio (SCR) of the braided framework (20) being more than 50% at the side of outer curve.