Two zero-dimensional inorganic-organic hybrids,(NMe3CH2Ph)2[Zn(H2O)6](SO4)2(1)and(NMe3CH2Ph)4[Zn2Cl2(SO4)3](2),were assembled from ZnSO4 and trimethylbenzylammonium chlorid...Two zero-dimensional inorganic-organic hybrids,(NMe3CH2Ph)2[Zn(H2O)6](SO4)2(1)and(NMe3CH2Ph)4[Zn2Cl2(SO4)3](2),were assembled from ZnSO4 and trimethylbenzylammonium chloride.Both feature an inorganicorganic sandwich structure with organic layers formed via aromatic stacking.1 contains a{[Zn(H2O)6](SO4)2}2-hydrogen-bonded network,while 2 consists of binuclear zinc clusters.Both exhibited room-temperature phosphorescence.1 showed a lifetime of 14.00 ms(invisible),whereas 2 displayed a lifetime of 290.00 ms with visible green afterglow.Furthermore,a series of host-guest doped afterglow materials was developed using compound 1 as the host matrix.Tuning the guest molecules enabled afterglow tuning from cyan to orange-yellow,with lifetimes enhanced up to about 65-fold versus the pristine host.Furthermore,the application of the doped systems in advanced anticounterfeiting was preliminarily explored.CCDC:2536064,1;2536065,2.展开更多
Six new lanthanide complexes:[Ln(3,4-DEOBA)3(4,4'-DM-2,2'-bipy)]2·2C2H5OH,[Ln=Dy(1),Eu(2),Tb(3),Sm(4),Ho(5),Gd(6);3,4-DEOBA-=3,4-diethoxybenzoate,4,4'-DM-2,2'-bipy=4,4'-dimethyl-2,2'...Six new lanthanide complexes:[Ln(3,4-DEOBA)3(4,4'-DM-2,2'-bipy)]2·2C2H5OH,[Ln=Dy(1),Eu(2),Tb(3),Sm(4),Ho(5),Gd(6);3,4-DEOBA-=3,4-diethoxybenzoate,4,4'-DM-2,2'-bipy=4,4'-dimethyl-2,2'-bipyridine]were successfully synthesized by the volatilization of the solution at room temperature.The crystal structures of six complexes were determined by single-crystal X-ray diffraction technology.The results showed that the complexes all have a binuclear structure,and the structures contain free ethanol molecules.Moreover,the coordination number of the central metal of each structural unit is eight.Adjacent structural units interact with each other through hydrogen bonds and further expand to form 1D chain-like and 2D planar structures.After conducting a systematic study on the luminescence properties of complexes 1-4,their emission and excitation spectra were obtained.Experimental results indicated that the fluorescence lifetimes of complexes 2 and 3 were 0.807 and 0.845 ms,respectively.The emission spectral data of complexes 1-4 were imported into the CIE chromaticity coordinate system,and their corre sponding luminescent regions cover the yellow light,red light,green light,and orange-red light bands,respectively.Within the temperature range of 299.15-1300 K,the thermal decomposition processes of the six complexes were comprehensively analyzed by using TG-DSC/FTIR/MS technology.The hypothesis of the gradual loss of ligand groups during the decomposition process was verified by detecting the escaped gas,3D infrared spectroscopy,and ion fragment information detected by mass spectrometry.The specific decomposition path is as follows:firstly,free ethanol molecules and neutral ligands are removed,and finally,acidic ligands are released;the final product is the corresponding metal oxide.CCDC:2430420,1;2430422,2;2430419,3;2430424,4;2430421,5;2430423,6.展开更多
摘要Two zero-dimensional inorganic-organic hybrids,(NMe3CH2Ph)2[Zn(H2O)6](SO4)2(1)and(NMe3CH2Ph)4[Zn2Cl2(SO4)3](2),were assembled from ZnSO4 and trimethylbenzylammonium chloride.Both feature an inorganicorganic sandwich structure with organic layers formed via aromatic stacking.1 contains a{[Zn(H2O)6](SO4)2}2-hydrogen-bonded network,while 2 consists of binuclear zinc clusters.Both exhibited room-temperature phosphorescence.1 showed a lifetime of 14.00 ms(invisible),whereas 2 displayed a lifetime of 290.00 ms with visible green afterglow.Furthermore,a series of host-guest doped afterglow materials was developed using compound 1 as the host matrix.Tuning the guest molecules enabled afterglow tuning from cyan to orange-yellow,with lifetimes enhanced up to about 65-fold versus the pristine host.Furthermore,the application of the doped systems in advanced anticounterfeiting was preliminarily explored.CCDC:2536064,1;2536065,2.
摘要Six new lanthanide complexes:[Ln(3,4-DEOBA)3(4,4'-DM-2,2'-bipy)]2·2C2H5OH,[Ln=Dy(1),Eu(2),Tb(3),Sm(4),Ho(5),Gd(6);3,4-DEOBA-=3,4-diethoxybenzoate,4,4'-DM-2,2'-bipy=4,4'-dimethyl-2,2'-bipyridine]were successfully synthesized by the volatilization of the solution at room temperature.The crystal structures of six complexes were determined by single-crystal X-ray diffraction technology.The results showed that the complexes all have a binuclear structure,and the structures contain free ethanol molecules.Moreover,the coordination number of the central metal of each structural unit is eight.Adjacent structural units interact with each other through hydrogen bonds and further expand to form 1D chain-like and 2D planar structures.After conducting a systematic study on the luminescence properties of complexes 1-4,their emission and excitation spectra were obtained.Experimental results indicated that the fluorescence lifetimes of complexes 2 and 3 were 0.807 and 0.845 ms,respectively.The emission spectral data of complexes 1-4 were imported into the CIE chromaticity coordinate system,and their corre sponding luminescent regions cover the yellow light,red light,green light,and orange-red light bands,respectively.Within the temperature range of 299.15-1300 K,the thermal decomposition processes of the six complexes were comprehensively analyzed by using TG-DSC/FTIR/MS technology.The hypothesis of the gradual loss of ligand groups during the decomposition process was verified by detecting the escaped gas,3D infrared spectroscopy,and ion fragment information detected by mass spectrometry.The specific decomposition path is as follows:firstly,free ethanol molecules and neutral ligands are removed,and finally,acidic ligands are released;the final product is the corresponding metal oxide.CCDC:2430420,1;2430422,2;2430419,3;2430424,4;2430421,5;2430423,6.