Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 19, Issue 50, Pages 17172-17179Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201301346
Keywords
lanthanide-based luminescence; metal-organic frameworks; near-infrared luminescence; nonlinear optics; solvent sensing
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Funding
- National Natural Science Fund of China [21101148, 21171162, 21301168]
- Jilin Province Youth Foundation [201201005, 20130522132JH, 20130522123JH]
- CIAC startup fund
- SRF for ROCS (State Education Ministry)
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The luminescent properties of a family of lanthanide metal-organic frameworks LnL (Ln=Y, La-Yb, except Pm; L=4,4-({2-[(4-carboxyphenoxy)methyl]-2-methylpropane-1,3-diyl}bis{oxy})dibenzoic acid) have been explored, and the energy-transfer process in the compounds has been carefully analyzed. The visible-emitting Tb0.08Gd0.92L and the near-infrared (NIR)-luminescent Yb0.10Gd0.90L show excellent optical performances and can be considered as fluorescent probes for acetone sensing based on luminescence quenching effects arising from host-guest interactions. Moreover, GdL exhibits a strong second harmonic generation (SHG) signal 6.1times that of potassium dihydrogen phosphate (KDP) and an outstanding phase-matchable effect. These lanthanide compounds combining fluorescent and nonlinear optical (NLO) properties could meet further requirements as multifunctional materials.
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