Key Laboratory of Polyoxometalate Science of the Ministry of Education, College of Chemistry, Northeast Normal University , Changchun, Jilin 130024, China.
Inorg Chem. 2014 Jan 6;53(1):289-93. doi: 10.1021/ic402228g. Epub 2013 Dec 13.
Isostructural lanthanide metal-organic frameworks (MOFs) are synthesized through the spontaneous self-assembly of H3BTPCA (1,1',1″-(benzene-1,3,5-triyl)tripiperidine-4-carboxylic acid) ligands and lanthanide ions (we term these MOFs Ln-BTPCA, Ln = La(3+), Tb(3+), Sm(3+), etc.). Prompted by the observation that the different lanthanide ions have identical coordination environment in these MOFs, we explored and succeeded in the preparation of mixed-lanthanide analogues of the single-lanthanide MOFs by way of in situ doping using a mixture of lanthanide salts. With careful adjustment of the relative concentration of the lanthanide ions, the color of the luminescence can be modulated, and white light-emission can indeed be achieved. The mechanisms possibly responsible for the observed photophysical properties of these mixed-lanthanide MOFs are also discussed.
同构的镧系金属-有机骨架（MOFs）是通过 H3BTPCA（1,1',1″-(苯-1,3,5-三基)三哌啶-4-羧酸）配体和镧系离子（我们将这些 MOFs 称为 Ln-BTPCA，Ln = La(3+)、Tb(3+)、Sm(3+) 等）的自发自组装合成的。受观察到的不同镧系离子在这些 MOFs 中具有相同的配位环境的启发，我们通过使用镧系盐混合物进行原位掺杂，成功地探索并制备了单镧系 MOFs 的混合镧系类似物。通过仔细调整镧系离子的相对浓度，可以调节发光的颜色，并且确实可以实现白光发射。还讨论了可能导致观察到的这些混合镧系 MOFs 的光物理性质的机制。
