Sorption of Xenon, Methane, and Organic Solvents by a Flexible Microporous Polymer Catena-Bis(Dibenzoylmethanato)-(4,4‘-bipyridyl)nickel(II)
Sorption of Xenon, Methane, and Organic Solvents by a Flexible Microporous Polymer Catena-Bis(Dibenzoylmethanato)-(4,4‘-bipyridyl)nickel(II)
复制标题
柔性微孔聚合物链-双(二苯甲酰基甲烷)-(4,4-联吡啶)镍(II)对氙、甲烷和有机溶剂的吸附
DOI：
10.1021/cm030433b
复制
发表时间：
2003
影响因子：
8.6
通讯作者：
J. Ripmeester
中科院分区：
文献类型：
--
作者：
D. Soldatov;I. Moudrakovski;C. Ratcliffe;R. Dutrisac;J. Ripmeester
标题聚合物配合物 [Ni(bipy)(DBM)2]（bipy = 4,4'-联吡啶；DBM = PhCOCHCOPh-，二苯甲酰甲烷酸酯）吸收大量气体和有机溶剂。这种材料在表征方面存在特殊问题，因为无法生长合适尺寸的单晶，并且顺磁性会干扰通常的核磁共振波谱应用。为了充分定义材料，采用了结构类比方法，并通过适当的核磁共振技术检查吸附的客体。氙的吸附遵循微孔固体的等温线特征，在~60 atm 下主体与氙摩尔比为 1:2（每 1 g 吸附剂 68 mL 氙）处有一个平台。与甲烷 (>100 atm) 的相互作用导致吸收高达 0.8 mol 甲烷 (27 mL/g)。在环境条件下，标题化合物从蒸气中或通过与液体直接接触吸收多种有机溶剂，最多两摩尔。结构性变化范围从细微调整到全面调整……
The title polymeric complex, [Ni(bipy)(DBM)2] (bipy = 4,4‘-bipyridyl; DBM = PhCOCHCOPh-, dibenzoylmethanate), absorbs considerable quantities of gases and organic solvents. This material presents special problems for characterization, as single crystals of suitable size could not be grown, and paramagnetism interferes with the usual NMR spectroscopic applications. To define the material adequately, an approach of structural analogy, along with the examination of the adsorbed guests by appropriate NMR techniques, was employed. The sorption of xenon follows an isotherm characteristic of microporous solids, with a plateau at 1:2 host-to-xenon molar ratio (68 mL of xenon per 1 g of sorbent) at ∼60 atm. The interaction with methane (>100 atm) results in an uptake of up to 0.8 mol methane (27 mL/g). Under ambient conditions the title compound absorbs a wide range of organic solvents, up to two moles, either from the vapor or by direct contact with liquids. Structural changes range from minor adjustments to tota...