RESUMO
Three anionic luminescent metal-organic frameworks (LMOFs; [M(tcbpe)(CH3)2NH2]·H2O; M = In3+, Eu3+, Gd3+; tcbpe = 4',4â´,4â´â³,4â´â´'-(ethene-1,1,2,2-tetrayl)tetrakis[(1,1'-biphenyl)-4-carboxylic acid]) are synthesized by employing the tetraphenylethene core ligand H4tcbpe with M3+ ions. They stack in the similarly 4-fold-interpenetrated three-dimensional porous structure. All give blue emission when excited at 365 nm, with fluorescence quantum yields of 34.8% (MOF-In), 7.1% (MOF-Eu), and 28.1% (MOF-Gd). Somewhat surprisingly, these three complexes are extremely stable both in various solvents and across a broad pH range: MOF-In is stable between pH = 0 and 14, and MOF-Eu and MOF-Gd are stable between pH = 0 and 13. Additionally, they also show good proton conductivities of 2.29 × 10-5 S·cm-1 (MOF-In), 2.02 × 10-4 S·cm-1 (MOF-Eu), and 1.24 × 10-4 S·cm-1 (MOF-Gd) at high temperature under 98% relative humidity. To the best of our knowledge, this is the first reported LMOF series combining aggregation-induced emission behavior with good proton conductivities.
RESUMO
In the octa-hydroxanthenedione unit of the title compound, C31H27NO6, the central di-hydro-pyran ring shows an envelope conformation, while the bilateral cyclo-hexene and cyclo-hexane rings adopt a half-boat conformation and a chair conformation, respectively. The nitro-benzene ring is twisted with respect to the two benzene rings, making dihedral angles of 63.1â (1) and 63.0â (1)°. In the crystal, O-Hâ¯O hydrogen bonds link the mol-ecules into supra-molecular chains propagating along the a-axis direction.
RESUMO
In the title ion-pair complex, (C12H14N2)[Cu(C4N2S2)2], the complex anion exhibits a highly twisted coordination environment around the tetra-coordinated Cu(II) atom. The dihedral angles between the 1,2-di-cyano-ethene-1,2-di-thiol-ato ligands and between the two pyridine rings in the cation are 37.49â (3) and 29.18â (10)°, respectively. Weak C-Hâ¯N and C-Hâ¯S hydrogen bonds link the cations and anions into a three-dimensional network.
