Crystallographic observation of dynamic gas adsorption sites and thermal expansion in a breathable fluorous metal-organic framework.
Crystallographic observation of dynamic gas adsorption sites and thermal expansion in a breathable fluorous metal-organic framework.
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DOI：
10.1002/anie.200804739
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发表时间：
2009-03
影响因子：
--
通讯作者：
Chi Yang;Xiaoping Wang;M. Omary
中科院分区：
文献类型：
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作者：
Chi Yang;Xiaoping Wang;M. Omary
手风琴演奏：将微孔含氟金属有机骨架的单晶置于环境大气中冷却，气体吸附时会产生非常大的呼吸，在此过程中，多个N(2)分子被填充到通道和笼中（见图）。在真空条件下，骨架表现出显著的正热膨胀，而在环境压力下，当晶体暴露于N(2)时，则发生了巨大的明显的负热膨胀。
Playing accordion: Cooling a single crystal of a microporous fluorous metal-organic framework under ambient atmosphere leads to very large breathing upon gas adsorption, during which multiple N(2) molecules are filled into channels and cages (see picture). While the framework exhibits remarkable positive thermal expansion under vacuum, a gigantic apparent negative thermal expansion takes place when the crystal is exposed to N(2) at ambient pressure.