Barsukova Marina O, Cherezova Sofia V, Sapianik Aleksandr A, Lundovskaya Olga V, Samsonenko Denis G, Fedin Vladimir P
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences 3 Acad. Lavrentiev Ave. 630090 Novosibirsk Russia
Novosibirsk State University 2 Pirogov St. 630090 Novosibirsk Russia.
RSC Adv. 2020 Oct 16;10(63):38252-38259. doi: 10.1039/d0ra08485a. eCollection 2020 Oct 15.
A series of lanthanide and yttrium MOFs of two structural types [M(HO)(nmp)(pzc)] (1M) and [M(HO)(pzc)]·NMP·5HO (2M) (where M - lanthanide or yttrium cation, nmp - -methyl-2-pyrrolidone, pzc - 2,5-pyrazinedicarboxylate) was synthesized and characterized by single crystal and powder X-ray diffraction crystallography, TG, elemental analyses and IR-spectroscopy. The effect of lanthanide contraction has led to the fact that lanthanides at the beginning of the series (from lanthanum to gadolinium) have a structure different from the structure of lanthanides at the end of the series and yttrium (from terbium and beyond). According to PXRD patterns of the obtained samples mixed metal materials could be obtained not only as crystalline mixtures of two structure types but also as crystalline products of single structure type. Varying the ratio of lanthanides in the initial reaction mixture allowed us to obtain a wide color range of luminescence, including several near-white-light emitting samples.
合成了一系列两种结构类型的镧系和钇金属有机框架化合物[M(HO)(nmp)(pzc)] (1M)和[M(HO)(pzc)]·NMP·5HO (2M)（其中M为镧系或钇阳离子，nmp为N-甲基-2-吡咯烷酮，pzc为2,5-吡嗪二羧酸），并通过单晶和粉末X射线衍射晶体学、热重分析、元素分析和红外光谱对其进行了表征。镧系收缩效应导致该系列开头的镧系元素（从镧到钆）具有与该系列末尾的镧系元素以及钇（从铽及以后）不同的结构。根据所得样品的粉末X射线衍射图谱，混合金属材料不仅可以作为两种结构类型的晶体混合物获得，还可以作为单一结构类型的晶体产物获得。改变初始反应混合物中镧系元素的比例使我们能够获得广泛的发光颜色范围，包括几个近白光发射样品。
