title: Insight into luminescence enhancement of coordinated water-containing lanthanide metal-organic frameworks by guest molecules.
abstract: A series of isostructural lanthanide three-dimensional compounds [Ln(HL)(H2O)2]·guest (Ln = Tb or Eu, = 2-(N,N-bis(4-methylbenzoic acid)amino)benzoic-1,4-dioic acid, guest = NMP, DMA, DMF or H2O) were assembled and characterized. Their luminescence intensities and quantum yields increase in the order of the guest molecules: NMP > DMA > DMF > H2O (NMP = N-methyl-2-pyrrolidone, DMA = N,N-dimethylacetamide, DMF = N,N-dimethylformamide). The investigation reveals that the hydrogen-bond formed between the metal-organic frameworks should be responsible for the luminescence enhancement of the compounds.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China. tsheng@fjirsm.ac.cn.
authors.forename: Yanlong
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Xue
authors.forename: Zhihao
authors.initials: Z
authors.lastname: Sun
authors.forename: Chunhong
authors.initials: C
authors.lastname: Tan
authors.forename: Yuehong
authors.initials: Y
authors.lastname: Wen
authors.forename: Shengmin
authors.initials: S
authors.lastname: Hu
authors.forename: Qilong
authors.initials: Q
authors.lastname: Zhu
authors.forename: Tianlu
authors.initials: T
authors.lastname: Sheng
authors.forename: Xintao
authors.initials: X
authors.lastname: Wu