Effect of organic polymer additive on crystallization of porous coordination polymer
Effect of organic polymer additive on crystallization of porous coordination polymer
复制标题
DOI：
10.1021/cm052427g
复制
发表时间：
2006-02-21
影响因子：
8.6
通讯作者：
Isoda, S
中科院分区：
文献类型：
--
作者：
Uemura, T;Hoshino, Y;Isoda, S
聚乙烯基磺酸钠（PVSA）是一种能够通过静电相互作用络合和稳定Cu 2+的聚合物，它影响多孔配位聚合物[{Cu（2）pzdc（2）-（pyz）}（n）]（pzdc =吡嗪-2，3-二羧酸酯，pyz =吡嗪; 1）在自组装过程中的结晶。结果表明，加入PVSA的反应混合物显着影响1的成核过程，这决定了1的晶体尺寸在1-100 μ m的范围内。扫描电子显微镜，X-射线粉末衍射和电子衍射测量表明，PVSA控制不仅晶体的尺寸和形状，但也优先取向的板晶体，这导致在散装粉状状态的通道方向的I对齐。每个样品的N-2吸附测量显示出与1的晶体尺寸无关的特征性典型的N-2吸附等温线;然而，由于N-2在1的一维通道中的扩散长度的变化，样品的吸附速度显示出新颖的尺寸依赖性特征。
Poly(vinylsulfonic acid, sodium salt) (PVSA) is a polymer capable of complexing and stabilizing Cu2+ by electrostatic interaction, which affects crystallization of a porous coordination polymer [{Cu(2)pzdc(2)-(pyz)}(n)] (pzdc = pyrazine-2,3-dicarboxylate, pyz = pyrazine; 1) in the self-assembly process. It is shown that the addition of PVSA to the reaction mixtures significantly affects the nucleation process of 1, which determines the crystal size of 1 in the range of 1-100 mu m. Scanning electron microscopy, X-ray powder diffraction, and electron diffraction measurements show that PVSA controls not only the crystal size and shape but also the preferential orientation of the plate crystals, which results in alignment of the channel direction of I in the bulk powdery state. The N-2 adsorption measurement of each sample showed characteristic typical micropore adsorption isotherms independent of the crystal size of 1; however, the adsorption speed for the samples showed a novel size-dependent feature because of changes in the diffusion length of N-2 in the one-dimensional channels of 1.