范德瓦尔斯力
合作性
化学物理
分子
化学
Crystal(编程语言)
多孔介质
相变
多孔性
结晶学
纳米技术
材料科学
热力学
物理
有机化学
生物化学
计算机科学
程序设计语言
作者
Jerry L. Atwood,Leonard J. Barbour,Agoston Jerga,Brandi L. Schottel
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2002-11-01
卷期号:298 (5595): 1000-1002
被引量:511
标识
DOI:10.1126/science.1077591
摘要
A well-known organic host compound undergoes single-crystal-to-single-crystal phase transitions upon guest uptake and release. Despite a lack of porosity of the material, guest transport through the solid occurs readily until a thermodynamically stable structure is achieved. In order to actively facilitate this dynamic process, the host molecules undergo significant positional and/or orientational rearrangement. This transformation of the host lattice is triggered by weak van der Waals interactions between the molecular components. In order for the material to maintain its macroscopic integrity, extensive cooperativity must exist between the molecules throughout the crystal, such that rearrangement can occur in a well-orchestrated fashion. We demonstrate here that even weak dispersive forces can exert a profound influence over solid-state dynamics.
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