ic402228g_si_001.pdf (1.16 MB)
Color Tuning and White Light Emission via in Situ Doping of Luminescent Lanthanide Metal–Organic Frameworks
journal contribution
posted on 2014-01-06, 00:00 authored by Qun Tang, Shuxia Liu, Yiwei Liu, Danfeng He, Jun Miao, Xingquan Wang, Yujuan Ji, Zhiping ZhengIsostructural 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.