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首页> 外文期刊>Crystal growth & design >Cooperative Crystallization of Chiral Heterometallic Indium(III)-Potassium(I) Metal-Organic Frameworks as Photosensitizers in Luminescence Sensors and Dye-Sensitized Solar Cells
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Cooperative Crystallization of Chiral Heterometallic Indium(III)-Potassium(I) Metal-Organic Frameworks as Photosensitizers in Luminescence Sensors and Dye-Sensitized Solar Cells

机译：在发光传感器和染料敏化太阳能电池中作为光敏剂的手性杂金属铟（III）-钾（I）金属-有机骨架的协同结晶

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In this work, the coexistence of In(III) and K(I) induces a rapid crystal growth of single crystals of heterometallic metal-organic frameworks (MOFs), [In0.5K(3-qlc)Cl-1.5(H2O)(0.5)](2n) (1) and [InK(ox)(2)-(H2O)(4)](n) (2) (3-Hqlc = quinoline-3-carboxylic acid; H(2)ox = oxalic acid). Remarkably, with the help of achiral 3-Hqlc, compound 1 represents the chiral interpenetrating p-block heterometallic MOFs with helical chain along the 43 screw axis, while compound 2 possesses a highly symmetric (4,4,4)-connected topology network with a Schlafli symbol of (4(2).8(3).10))(4(2).8(4)). Consideration of two different organic ligands viz. 3-Hqlc and H(2)ox constructed heterometallic MOFs with different geometrical dimensions of unit cells, their influences on luminescence arid photovoltaic properties are studied. Compounds 1 and 2 show tunable luminescence from blue to yellow and white by varying the temperature in the solid state. Encouraged by the UV visible absorption and HOMO-LUMO energy states matched for sensitizing TiO2, the two compounds are employed in combination with N719 in dye-sensitized solar cells (DSSCs) to compensate for absorption in the region of ultraviolet and blue-violet. Under optimized conditions, the DSSCs devices using cosensitizers of 1/N719 and 2/N719 display an overall conversion efficiency of 8.07% and 7.42%, which is 22.09% and 12.25% higher than that of a device solely sensitized by N719 (6.61%). Consequently, both of the two compounds could serve as excellent photosensitizers and application in luminescence sensors and DSSCs.
机译：在这项工作中，In（III）和K（I）的共存诱导了异金属金属有机骨架（MOFs）[In0.5K（3-qlc）Cl-1.5（H2O）（ 0.5）]（2n）（1）和[InK（ox）（2）-（H2O）（4）]（n）（2）（3-Hqlc =喹啉-3-羧酸; H（2）ox =草酸）。值得注意的是，在非手性3-Hqlc的帮助下，化合物1代表手性互穿的p嵌段异金属MOF，其沿着43螺杆轴具有螺旋链，而化合物2具有高度对称的（4,4,4）连接的拓扑网络， （4（2）.8（3）.10））（4（2）.8（4））的Schlafli符号。考虑两种不同的有机配体。 3-Hqlc和H（2）ox构造了具有不同几何尺寸的晶胞的异金属MOF，研究了它们对发光和光伏性质的影响。通过改变固态温度，化合物1和2显示出从蓝色到黄色和白色的可调发光。受到紫外线可见吸收和对TiO2增感的HOMO-LUMO能量状态匹配的鼓励，这两种化合物与N719结合用于染料敏化太阳能电池（DSSC）中，以补偿紫外线和蓝紫色区域的吸收。在优化条件下，使用1 / N719和2 / N719增敏剂的DSSCs设备的总体转换效率为8.07％和7.42％，比仅由N719敏化的设备（6.61％）高22.09％和12.25％。 。因此，这两种化合物都可以用作出色的光敏剂，并应用于发光传感器和DSSC。

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