Division of Applied Chemistry and Frontier Chemistry Center, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan.
Rigaku Corporation, Akishima, Tokyo, 196-8666, Japan.
Chemistry. 2020 Jan 13;26(3):735-744. doi: 10.1002/chem.201904597. Epub 2019 Dec 16.
The first examples of porous molecular crystals that are assembled through Au⋅⋅⋅Au interactions of gold complex 1 are here reported along with their exchange properties with respect to their guest components. Single-crystal X-ray diffraction (XRD) analyses indicate that the crystal structure of 1/CH Cl ⋅pentane is based on cyclic hexamers of 1, which are formed through six Au⋅⋅⋅Au interactions. The packing of these cyclic hexamers affords a porous architecture, in which the one-dimensional channel segment contains CH Cl and pentane as guests. These guests can be exchanged through operationally simple methods under retention of the host framework of 1, which furnished 1/guest complexes with 26 different guests. A single-crystal XRD analysis of 1/eicosane, which contains the long linear alkane eicosane (n-C H ), successfully provided its accurately modeled structure within the porous material. These host-guest complexes show chromic luminescence with both blue- and redshifted emissions. Moreover, this porous organometallic material can exhibit luminescent mechanochromism through release of guests.
本文首次报道了通过金配合物 1 的 Au⋅⋅⋅Au 相互作用组装的多孔分子晶体，并研究了其与客体组分的交换性质。单晶 X 射线衍射（XRD）分析表明，1/CHCl ⋅pentane 的晶体结构基于 1 的环状六聚体，其通过六个 Au⋅⋅⋅Au 相互作用形成。这些环状六聚体的堆积形成了多孔结构，其中一维通道段包含 CHCl 和戊烷作为客体。这些客体可以通过简单的操作方法进行交换，同时保留 1 的主体框架，得到了具有 26 种不同客体的 1/客体配合物。对含有长线性烷烃二十烷（n-C20H42）的 1/eicosane 的单晶 XRD 分析成功地在多孔材料中提供了其准确建模的结构。这些主客体配合物表现出具有蓝移和红移发射的变色发光。此外，这种多孔金属有机材料可以通过释放客体来表现出发光机械变色。
