与结合的多孔协调聚合物:结构转变,吸附性质和粒子大小从动力学研究中得出
Kazuhiro Uemura1, Kazuya Saito, Susumu Kitagawa
1Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University, Tokiwadai 2-16-1, Ube-shi, Yamaguchi 755-8611, Japan. kazu-u@yamaguchi-u.ac.jp
Journal of the American Chemical Society
|December 15, 2006
概括
合成了三种新的 ((II) 协调聚合物. 化合物3表现出可逆的客分子吸附和脱附,具有对脱附的零级反应机制.
科学领域:
- 协调化学 协调化学
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
背景情况:
- 协调聚合物 (CPs) 是具有多种应用的晶体材料.
- 具有特定多孔结构的CP的设计对于宿主-客人化学是至关重要的.
- 基于的CPs提供了有趣的磁性和催化性能.
研究的目的:
- 合成和描述新型 ((II) 协调聚合物.
- 调查这些CP的结构特征和客人整合能力.
- 为了研究一个载客CP的吸附-脱附行为和反应动力学.
主要方法:
- 单晶X射线衍射用于结构确定.
- 红外光谱学用于表征.
- 差分扫描热度计 (DSC) 用于热力学分析.
- 用于动力学研究的异热吸附/脱附实验.
主要成果:
- 三种新的 (((II) 协调聚合物,[CoCl2 ((4-pmna) 2) n,{[Co ((NCS) 2 ((4-pmna) 2) }.2Me2CO}n,和{[Co ((4-pmna) 2 ((H2O) 2) }{NO3) 2.2CH3OH}n,被合成.
- 所有的化合物都具有双链1D"重复方形类型"链,具有矩形腔.
- 化合物3展示了可逆的客分子 (水和甲醇) 通过键捕获,具有零级脱吸机制和约100kJ/mol的激活能量.
结论:
- 尼古丁胺胺 (4-pmna) 的N-pyridin-4-ylmethyl连接体有效地与 (II) 形成1D协调聚合物链.
- 结构布局要求客人合并,而复合物3显示出显著的主机-客房属性.
- 化合物3显示可逆的客体吸附/脱附,为分子分离或传感应用提供了潜力.
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