Abstract
AbstractSix rare‐earth (RE) metal constructed 3D metal–organic frameworks, [RE(pydc)(H2O)n]4[SiW12O40]·4H2O [RE = TmIII (1), YIII (2), PrIII (3), LaIII (4), SmIII (5), EuIII (6); n = 3 (1, 2), 4 (3–6); H2pydc = pyridine‐2,6‐dicarboxylic acid], have been synthesized and characterized by elemental analyses, inductively coupled plasma techniques, IR and UV spectroscopy, thermogravimetric analyses (for 1 and 3), X‐ray powder diffraction, and single‐crystal X‐ray diffraction. The structural analyses indicate that 1–6 are basically isostructural and show a rare host 3D framework that contains [SiW12O40]4– Keggin polyoxoanions as templates. Photoluminescence measurements reveal that 1–5 show the luminescence of pydc ligands, whereas 6 displays a unique red luminescence.
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