Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/ Catedrático José Beltrán, 2, 46980 Paterna, Spain.
Nat Commun. 2012 May 8;3:828. doi: 10.1038/ncomms1827.
Responsive materials for which physical or chemical properties can be tuned by applying an external stimulus are attracting considerable interest in view of their potential applications as chemical switches or molecular sensors. A potential source of such materials is metal-organic frameworks. These porous coordination polymers permit the physisorption of guest molecules that can provoke subtle changes in their porous structure, thus affecting their physical properties. Here we show that the chemisorption of gaseous HCl molecules by a non-porous one-dimensional coordination polymer instigates drastic modifications in the magnetic properties of the material. These changes result from profound structural changes, involving cleavage and formation of covalent bonds, but with no disruption of crystallinity.
响应型材料在外界刺激的作用下其物理或化学性质可调，鉴于其作为化学开关或分子传感器的潜在应用，这类材料受到了极大的关注。一种可能的此类材料来源是金属-有机框架。这些多孔配位聚合物允许客体分子的物理吸附，这些客体分子可能会引起其多孔结构的微妙变化，从而影响其物理性质。在这里，我们表明非多孔一维配位聚合物对气态 HCl 分子的化学吸附会引发材料磁性质的剧烈变化。这些变化源自涉及共价键的形成与断裂的深刻结构变化，但不破坏结晶度。
