Color Tuning and White Light Emission via in Situ Doping of Luminescent Lanthanide Metal–Organic Frameworks

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 = La3+, Tb3+, Sm3+, etc.). Prompted by the observation...

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Published in:Inorganic chemistry 2014-01, Vol.53 (1), p.289-293
Main Authors: Tang, Qun, Liu, Shuxia, Liu, Yiwei, He, Danfeng, Miao, Jun, Wang, Xingquan, Ji, Yujuan, Zheng, Zhiping
Format: Article
Language:English
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Summary: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 = La3+, Tb3+, Sm3+, 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.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic402228g