title: Lanthanide metal-organic frameworks showing luminescence in the visible and near-infrared regions with potential for acetone sensing.
abstract: 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 Tb(0.08)Gd(0.92)L and the near-infrared (NIR)-luminescent Yb(0.10)Gd(0.90)L 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 6.1 times 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.
authors.affiliation: State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P. R. China) http:/zhongmingsun.weebly.com.
authors.forename: Song
authors.initials: S
authors.lastname: Dang
authors.forename: Xue
authors.initials: X
authors.lastname: Min
authors.forename: Weiting
authors.initials: W
authors.lastname: Yang
authors.forename: Fei-Yan
authors.initials: FY
authors.lastname: Yi
authors.forename: Hongpeng
authors.initials: H
authors.lastname: You
authors.forename: Zhong-Ming
authors.initials: ZM
authors.lastname: Sun
keywords: lanthanide-based luminescence; metal-organic frameworks; near-infrared luminescence; nonlinear optics; solvent sensing