title: Photofunctional hybrids of lanthanide functionalized bio-MOF-1 for fluorescence tuning and sensing.
abstract: A series of luminescent Ln(3+)@bio-MOF-1 (Ln=Eu, Tb, bio-MOF-1=Zn8(ad)4(BPDC)6O⋅2Me2NH2 (ad=adeninate, BPDC=biphenyldicarboxylate)) are synthesized via postsynthetic cation exchange by encapsulating lanthanide ions into an anionic metal-organic framework (MOF), and their photophysical properties are studied. After loading 2-thenoyltrifluroacetone (TTA) as sensitized ligand by a gas diffusion ("ship-in-bottle") method, it is found that the luminescent intensity of Eu(3+) is enhanced. Especially, when loading two different lanthanide cations into bio-MOF-1, the luminescent color can be tuned to close white (light pink) light output. Additionally, bio-MOF-1 and Eu(3+)@bio-MOF-1 are selected as representative samples for sensing metal ions. When bio-MOF-1 is immersed in the aqueous solutions of different metal ions, it shows highly sensitive sensing for Fe(3+) as well as Eu(3+)@bio-MOF-1 immersed in the DMF solutions of different metal ion. The results are benefit for the further application of functionalized bio-MOFs in practical fields.
authors.affiliation: Department of Chemistry, Tongji University, Shanghai 200092, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Shen
authors.affiliation: Department of Chemistry, Tongji University, Shanghai 200092, China. Electronic address: byan@tongji.edu.cn.
authors.forename: Bing
authors.initials: B
authors.lastname: Yan
mesh_terms: D000096:Acetone / Q000031:analogs & derivatives; D054879:Halogenation; D007477:Ions / Q000032:analysis; D007501:Iron / Q000032:analysis*; D028581:Lanthanoid Series Elements / Q000138:chemical synthesis / Q000737:chemistry*; D008024:Ligands; D049449:Luminescence; D049408:Luminescent Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods; D008670:Metals / Q000032:analysis; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D007477:Ions; D028581:Lanthanoid Series Elements; D008024:Ligands; D049408:Luminescent Agents; D008670:Metals; D009942:Organometallic Compounds; D000096:Acetone; D007501:Iron
keywords: Bio-MOF-1; Hybrid system; Lanthanide complex; Luminescence; Sensing