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A Series of Lanthanide Metal–Organic Frameworks with Interesting Adjustable Photoluminescence Constructed by Helical Chains
Author(s) -
Liu Ying,
Zhang Yu,
Hu Gong Hao,
Zhou Shuai,
Fan Ruiqing,
Yang Yulin,
Xu Yan
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201501193
Subject(s) - isostructural , lanthanide , photoluminescence , isonicotinic acid , crystallography , powder diffraction , infrared spectroscopy , crystal structure , materials science , metal , metal organic framework , single crystal , chemistry , ion , organic chemistry , hydrazide , optoelectronics , adsorption , metallurgy
Based on the isonicotinic acid (HIN=pyridine‐4‐carboxylic acid), seven lanthanide metal–organic frameworks (MOFs) with the formula [Ln(IN) 2 L] (Ln=Eu ( 1 ), Tb ( 2 ), Er ( 3 ), Dy ( 4 ), Ho ( 5 ), Gd ( 6 ), La ( 7 ), L=OCH 2 CH 2 OH) have been synthesized by mixing Ln 2 O 3 with HIN under solvothermal conditions, and characterized by single‐crystal X‐ray diffraction, powder X‐ray diffraction, infrared spectroscopy, and fluorescence spectroscopy. Crystal structural analysis shows that compounds 1–6 are isostructural, crystallize in a chiral space group P 2 1 2 1 2 1 , whereas compound 7 crystallizes in space group C 2/ c . Nevertheless, they all consist of new intertwined chains. Simultaneously, on the basis of the above‐mentioned compounds, we have realized a rational design strategy to form the doped Ln MOFs [(Eu x Tb 1− x )(IN) 2 L] ( x =0.35 ( 8 ), x =0.19 ( 9 ), x =0.06 ( 10 )) by utilizing Tb III as the second “rare‐earth metal”. Interestingly, the photoluminescence of [(Eu x Tb 1− x )(IN) 2 L] are not only adjustable by the ratios of Eu/Tb, but also temperature or excitation wavelength.