准备和气体吸附研究三个网格调节分子,具有共同的结构
Shengqian Ma1, Daofeng Sun, Daqiang Yuan
1Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, USA.
Journal of the American Chemical Society
|April 22, 2009
概括
研究人员开发了三种新的分子网 (MAMSs),使用特定的配体和各种金属盐. 这些MAMS显示了可调节的选效应,该效应与温度线性变化.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 纳米技术 纳米技术
背景情况:
- 设计功能性多孔材料对于分离和存储应用至关重要.
- 控制分子的孔径大小和动态仍然是一个重大挑战.
- 两联体为创建先进材料提供了独特的结构可能性.
研究的目的:
- 为了合成新的同结构性网状可调性分子网 (MAMS).
- 为了研究这些新材料的取决于温度的分子选行为.
- 为了确定连接体结构和孔径大小的热可调性之间的关系.
主要方法:
- 溶热合成使用预先设计的两联体 (4'-三--双-3,5-二碳酸盐,BBPDC) 和金属酸盐 (Zn,Co,Cu).
- 由此产生的同结构MAMS (MAMS-2,MAMS-3,MAMS-4) 的表征.
- 对温度调节的分子选效应和孔径大小变化的分析.
主要成果:
- 三种同结构MAMS通过使用BBPDC连接物与Zn,Co和Cu成功合成.
- 所有合成的MAMS都表现出温度调节的分子选效应.
- 在网格大小 (D) 和温度 (T) 之间观察到一个线性关系:D = D(0) +alphaT,D(0) = 2.83和alpha = 0.0073对于BBPDC连接体,独立于金属离子.
结论:
- 该BBPDC连接体有助于创建具有可预测的,温度依赖的孔径大小调整的同结构MAMS.
- 观察到的线性关系突出显示了连接体在控制分子网网格大小的热反应中的作用.
- 这些发现为设计具有可调节孔隙性的先进材料提供了一条途径,用于特定的分离或捕获应用.
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