A series of lanthanide coordination polymers with 4′-(4-carboxyphenyl)-2,2′:6′,2″-terpyridine: Syntheses, crystal structures and luminescence properties

• Published in: Inorganic chemistry communications 2011-03, Vol.14 (3), p.484-488
• Main Authors: Wu, Qing-Ran, Wang, Ji-Jiang, Hu, Huai-Ming, Shangguan, Yi-Qing, Fu, Feng, Yang, Meng-Lin, Dong, Fa-Xin, Xue, Gang-Lin
• Format: Article
• Language: English
• Subjects: 4′-(4-carboxyphenyl)-2,2′:6′,2″-terpyridine; Crystal structures; Lanthanide coordination polymers; Luminescence
• ISSN: 1387-7003; 1879-0259
• DOI: 10.1016/j.inoche.2011.01.007

A series of lanthanide coordination polymers, [Ln(cptpy) 3] n [Ln = Sm ( 1), Eu ( 2), Tb ( 3), Dy ( 4), Hcptpy = 4′-(4-carboxyphenyl)-2,2′:6′,2″-terpyridine] have been prepared under hydrothermal conditions and characterized by IR, Elemental analysis, single crystal X-ray diffraction. Compounds 1– 4 are isostructural with 1D framework, in which all Ln III atoms are nine-coordinated and (cptpy) − anions adopt two different coordination modes. The network packed through π···π stacking interactions and C–H···π interactions to form a 3D supramolecular structure without solvent molecules. In addition, the thermal stabilities and luminescence properties were also studied. A series of lanthanide coordination polymers, [Ln(cptpy) 3] n [Ln = Sm ( 1), Eu ( 2), Tb ( 3), Dy ( 4), Hcptpy = 4′-(4-carboxyphenyl)-2,2′:6′,2″-terpyridine] have been prepared under hydrothermal conditions and characterized. Their photoluminescence properties were also studied. The thermal stabilities and lifetime of 2 were further studied. [Display omitted] ► A series of lanthanide coordination polymers, [Ln(cptpy) 3] n have been prepared. ► The 3D supramolecular structure is formed through π···π and C–H···π interactions. ► The (cptpy) - anion can efficiently sensitize Eu III luminescence.