Functional crown-ether ionic liquids were used as catalytic green solvents of Finkelstein reaction of 1-bromooctane and iodide. The rate and yield of the reaction were obvious improved compared with that using crown e...Functional crown-ether ionic liquids were used as catalytic green solvents of Finkelstein reaction of 1-bromooctane and iodide. The rate and yield of the reaction were obvious improved compared with that using crown ether in water. No free crown ether loss was observed after reaction.展开更多
Two novel 18-crown-6-ether(18-C-6)directed one-dimensional silver(I)coordination polymers(1D Ag(I)CPs),formulated as{[(18-C-6)Ag(bpy)]⋅X}_(∞)and{[(18-C-6)Ag(pyz)]⋅X}_(∞){bpy=4,4′-bipyridine;pyz=pyrazine;X=BF_(4)^(...Two novel 18-crown-6-ether(18-C-6)directed one-dimensional silver(I)coordination polymers(1D Ag(I)CPs),formulated as{[(18-C-6)Ag(bpy)]⋅X}_(∞)and{[(18-C-6)Ag(pyz)]⋅X}_(∞){bpy=4,4′-bipyridine;pyz=pyrazine;X=BF_(4)^(-)(Ⅰa,Ⅱa),CF_(3)SO_(3)^(-)(Ⅰb,Ⅱb)},are prepared and structurally determined.The protection of the 18-C-6 macrocycle not only efficiently prevents intermolecular interactions within each 1D Ag(I)CP but also significantly enhances the rigidity of the chain structures,allowing these polymers to exhibit remarkable phosphorescence with intense green-light emission at room temperature.Moreover,Ⅱa and Ⅱb show enhanced photoluminescence quantum yields and aggregation-induced emission properties,which can be attributed to their close-packed structure modes in the crystalline states.Interestingly,upon mixing with commercial resin,Ⅱa can serve as an efficient and stable luminescent ink for 3D printing.The resulting printed structures demonstrate exceptional irradiation stability,retaining their luminescence properties without any quenching over a three-month period.This work not only provides a facile strategy to prepare luminescent 1D Ag(I)CPs but also shows the promise of their utilization in optical devices.展开更多
基金the Key Program of the National Natural Science Foundation of China(No.20533010).
文摘Functional crown-ether ionic liquids were used as catalytic green solvents of Finkelstein reaction of 1-bromooctane and iodide. The rate and yield of the reaction were obvious improved compared with that using crown ether in water. No free crown ether loss was observed after reaction.
基金K.-G.Liu is grateful for financial support from the National Natural Science Foundation of China(Grant No.92161106)the Natural Science Foundation of Ningxia(Grant No.2023AA02004)+2 种基金J.Wei is grateful for financial support from the Natural Science Foundation of Ningxia(Grant No.2024AAC03032)X.Yang is grateful for financial support from the Key Research and Development Program of Ningxia(Grant No.2021BEB04066)The authors acknowledge the French Grand Equipment National de Calcul Intensif for HCP support(Project a0010807367).
文摘Two novel 18-crown-6-ether(18-C-6)directed one-dimensional silver(I)coordination polymers(1D Ag(I)CPs),formulated as{[(18-C-6)Ag(bpy)]⋅X}_(∞)and{[(18-C-6)Ag(pyz)]⋅X}_(∞){bpy=4,4′-bipyridine;pyz=pyrazine;X=BF_(4)^(-)(Ⅰa,Ⅱa),CF_(3)SO_(3)^(-)(Ⅰb,Ⅱb)},are prepared and structurally determined.The protection of the 18-C-6 macrocycle not only efficiently prevents intermolecular interactions within each 1D Ag(I)CP but also significantly enhances the rigidity of the chain structures,allowing these polymers to exhibit remarkable phosphorescence with intense green-light emission at room temperature.Moreover,Ⅱa and Ⅱb show enhanced photoluminescence quantum yields and aggregation-induced emission properties,which can be attributed to their close-packed structure modes in the crystalline states.Interestingly,upon mixing with commercial resin,Ⅱa can serve as an efficient and stable luminescent ink for 3D printing.The resulting printed structures demonstrate exceptional irradiation stability,retaining their luminescence properties without any quenching over a three-month period.This work not only provides a facile strategy to prepare luminescent 1D Ag(I)CPs but also shows the promise of their utilization in optical devices.
