当前位置：
X-MOL 学术
›
Inorg. Chem.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
A Scandium MOF with an Unprecedented Inorganic Building Unit, Delimiting the Micropore Windows.
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-06-17 , DOI: 10.1021/acs.inorgchem.0c00840 Pia Rönfeldt 1 , Erik Svensson Grape 2 , A Ken Inge 2 , Dmitri V Novikov 3 , Azat Khadiev 3 , Martin Etter 3 , Timo Rabe 1 , Jannik Benecke 1 , Huayna Terraschke 1 , Norbert Stock 1
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-06-17 , DOI: 10.1021/acs.inorgchem.0c00840 Pia Rönfeldt 1 , Erik Svensson Grape 2 , A Ken Inge 2 , Dmitri V Novikov 3 , Azat Khadiev 3 , Martin Etter 3 , Timo Rabe 1 , Jannik Benecke 1 , Huayna Terraschke 1 , Norbert Stock 1
Affiliation
|
A new scandium metal–organic framework (Sc-MOF) with the composition of [Sc(OH)(OBA)], denoted as Sc-CAU-21, was prepared under solvothermal reaction conditions using 4,4′-oxidibenzoic acid (H2OBA) as the ligand. Single-crystal structure determination revealed the presence of the new inorganic building unit (IBU) {Sc8(μ-OH)8(O2C)16}. It is composed of cis-connected ScO6 polyhedra forming an eight-membered ring through bridging μ-OH groups. The connection of the IBUs leads to a 3D framework, containing 1D pores with a diameter between 4.2 and 5.6 Å. Pore access is limited by the size of the IBU, and in contrast to the isoreticular aluminum compound Al-CAU-21 [Al(OH)(OBA)], which is nonporous toward nitrogen at 77 K, Sc-CAU-21 exhibits a specific surface area of 610 m2 g–1. The title compound is thermally stable in air up to 350 °C and can be employed as a host for photoluminescent ions. Sc-CAU-21 exhibits a ligand-based blue emission, and (co)substituting Sc3+ ions with Ln3+ ions (Eu3+, Tb3+, and Dy3+) allows the tuning of the emitting color of the phosphor from red to green. Single-phase white-light emission with CIE color coordinates close to the ideal for white-light emission was also achieved. The luminescence property was utilized in combination with powder X-ray diffraction to study in situ the crystallization process of Sc-CAU-21:Tb and Sc-CAU-21:Eu. Both studies indicate a two-step crystallization process, with a crystalline intermediate, prior to the formation of Sc-CAU-21:Ln.
中文翻译：
带有无与伦比的无机建筑单元的Scan MOF，界定了微孔窗口。
在溶剂热反应条件下，使用4,4'-氧化苯甲酸（H）制备了一种新的具有[Sc（OH）（OBA）]组成的scan金属-有机骨架（Sc-MOF），表示为Sc-CAU-21。2 OBA）作为配体。单晶结构确定表明存在新的无机建筑单元（IBU）{Sc 8（μ-OH）8（O 2 C）16 }。它由顺式连接的ScO 6组成多面体通过桥接μ-OH基团形成八元环。IBU的连接导致一个3D框架，其中包含直径在4.2到5.6Å之间的一维孔。孔的进入受到IBU尺寸的限制，与等孔铝化合物Al-CAU-21 [Al（OH）（OBA）]不同，后者在77 K时对氮气无孔，Sc-CAU-21表现出比表面积为610 m 2 g –1。标题化合物在高达350°C的空气中具有热稳定性，可用作光致发光离子的主体。Sc-CAU-21表现出基于配体的蓝色发射，并且用Ln 3+离子（Eu 3+，Tb 3+和Dy 3+取代（共）Sc 3+离子）可以将磷光体的发射颜色从红色调整为绿色。还实现了CIE颜色坐标接近于理想白光发射的单相白光发射。利用发光性能与粉末X射线衍射相结合，就地研究了Sc-CAU-21：Tb和Sc-CAU-21：Eu的结晶过程。两项研究均表明，在形成Sc-CAU-21：Ln之前，采用结晶中间体进行两步结晶。
更新日期：2020-07-06
中文翻译：
带有无与伦比的无机建筑单元的Scan MOF，界定了微孔窗口。
在溶剂热反应条件下，使用4,4'-氧化苯甲酸（H）制备了一种新的具有[Sc（OH）（OBA）]组成的scan金属-有机骨架（Sc-MOF），表示为Sc-CAU-21。2 OBA）作为配体。单晶结构确定表明存在新的无机建筑单元（IBU）{Sc 8（μ-OH）8（O 2 C）16 }。它由顺式连接的ScO 6组成多面体通过桥接μ-OH基团形成八元环。IBU的连接导致一个3D框架，其中包含直径在4.2到5.6Å之间的一维孔。孔的进入受到IBU尺寸的限制，与等孔铝化合物Al-CAU-21 [Al（OH）（OBA）]不同，后者在77 K时对氮气无孔，Sc-CAU-21表现出比表面积为610 m 2 g –1。标题化合物在高达350°C的空气中具有热稳定性，可用作光致发光离子的主体。Sc-CAU-21表现出基于配体的蓝色发射，并且用Ln 3+离子（Eu 3+，Tb 3+和Dy 3+取代（共）Sc 3+离子）可以将磷光体的发射颜色从红色调整为绿色。还实现了CIE颜色坐标接近于理想白光发射的单相白光发射。利用发光性能与粉末X射线衍射相结合，就地研究了Sc-CAU-21：Tb和Sc-CAU-21：Eu的结晶过程。两项研究均表明，在形成Sc-CAU-21：Ln之前，采用结晶中间体进行两步结晶。
京公网安备 11010802027423号