these Cu(II) complexes were synthesized. The fluorescence of [Cu(I/II)(qdeta)]+/2+ and [Cu(I/II)(bpqa)]+/2+ in aqueoussolution was characterized; [Cu(I)(qdeta)]+ and [Cu(I)(bpqa)]+ were found to fluoresce in aqueoussolution, whereas the fluorescence of [Cu(II)(qdeta)]2+ and [Cu(II)(bpqa)]2+ was almost completely quenched. The chelation enhanced fluorescence effect was observed for both [Cu(I)(qdeta)]+
A series of isomorphic 3D layered rareearth hydroxide (LREH) frameworks RE3(OH)7(1,5-NDS) (RE = Y (1), Gd (2), Er (3), Yb (4); 1,5-NDS = 1,5-naphthalenedisulfonate) has been synthesized under hydrothermal conditions. The crystal structures, thermal stabilities, photoluminescence, and magnetic properties of these compounds have been investigated. The results demonstrate that the compounds are highly
Under hydrothermal conditions, reaction of Cu(II)/Cd(II) salts with 1,5-naphthalenedisulfonate (1,5-NDS) and 4,5-diazafluoren-9-one (dafo) afforded [Cu(dafo)(2)(1,5-NDS)](n) (1) and [Cd(dafo)(2)(1,5-NDS)](n) (2), respectively. The compounds were characterized by elemental analysis, IR, PXRD, TG-DSC, and single-crystal X-ray diffraction. Both 1 and 2, which are the first M(II)-1,5-NDS-dafo systems, exhibit 3-D supramolecular structures generated by 1-D chains via C-HO hydrogen bonds and - interactions. Solid-state photoluminescence properties of both 1 and 2 were investigated with emission bands at 426-496nm ((ex)=280, 270nm for 1 and 2, respectively).
Syntheses, structures, and photoluminescence properties of Zn(II)/Cd(II) supramolecular architectures based on 1,5-naphthalenedisulfonate and 1,10-phenanthroline ligands
Two new supramolecular transition metal compounds, [Zn(phen)(2)(1,5-NDS)(H2O)] and [Cd(phen)(2)(1,5-NDS)](n) (1,5-NDS = 1,5-naphthalenedisulfonate, phen = 1,10-phenanthroline), were obtained under hydrothermal/solvothermal conditions and structurally characterized by elemental analysis, IR, PXRD, TG-DSC, and single-crystal X-ray determination. They represent the first examples of Zn(II)/Cd(II) supramolecular compounds based on the 1,5-NDS/phen system. The Zn compound exhibits a 3D supramolecular structure via hydrogen bond (O-Ha <-O and C-Ha <-O) and pi-pi interactions. The Cd compound is a 3D supramolecular framework generated by 1D coordinated chains through a hydrogen bond (C-Ha <-O) and pi-pi interactions. In addition, photoluminescence properties for both have been discussed. [Zn(phen)(2)(1,5-NDS)(H2O)] shows an emission peak at 420 nm (lambda (ex) = 342 nm), and [Cd(phen)(2)(1,5-NDS)] (n) displays a strong emission peak at 388 nm with a shoulder peak at 369 nm (lambda (ex) = 332 nm)..
KOGA, KENJI;ODASHIMA, KAZUNORI, J. INCL. PHENOM., 7,(1989) N, C. 53-60