A series of Tb-based metal-organic frameworks(Tb-MOFs)were successfully synthesized by a solvothermal method.The size and morphology of the as-obtained Tb-MOFs can be effectively controlled via regulating the experime...A series of Tb-based metal-organic frameworks(Tb-MOFs)were successfully synthesized by a solvothermal method.The size and morphology of the as-obtained Tb-MOFs can be effectively controlled via regulating the experimental conditions such as the volume fraction of DMF and the molar ratio of Tb^(3+)to NaOH.It is found that all the samples exhibit strong green emissions under ultraviolet excitation,corresponding to^(5)D_(4)→^(7)F_(J)transitions of Tb^(3+).Interestingly,Tb-MOFs displayed an efficient and distinct luminescence quenching by Cu^(2+)in aqueous solutions.The competitive fluorescence detection experiments indicate that these Tb-MOFs sensors can be used as a high selective and sensitive sensor of Cu^(2+)detection with the detection limit of 10μmol·L^(-1),which can be used as a promising fluorescence sensor for Cu^(2+)detection in daily life.展开更多
Introduction Tufted angioma (TA) is an uncommon vascular tumor.It most presents variable clinical appearances during infancy and early childhood.TA usually presents clinically as a large,plaque-like,red or dusky blue-...Introduction Tufted angioma (TA) is an uncommon vascular tumor.It most presents variable clinical appearances during infancy and early childhood.TA usually presents clinically as a large,plaque-like,red or dusky blue-purple,infiltrated lesion,or an exophytic,firm,violaceous,cutaneous nodule.TA is commonly solitary,but multifocal cases have been reported[1].Histologically,TA demonstrates vascular tufts of tightly packed capillaries,randomly dispersed throughout the dermis in a typical model of 'cannonball distribution' with crescent spaces surrounding the vascular tufts and lymphatic-like spaces within the tumor stromal.展开更多
基金the National Key R&D Program of China(No.2017YFC0504903)the Project of Education Department of Sichuan Province(No.18ZA0408)the Opening Laboratory Project of Sichuan Normal University(No.KFSY2018022)。
文摘A series of Tb-based metal-organic frameworks(Tb-MOFs)were successfully synthesized by a solvothermal method.The size and morphology of the as-obtained Tb-MOFs can be effectively controlled via regulating the experimental conditions such as the volume fraction of DMF and the molar ratio of Tb^(3+)to NaOH.It is found that all the samples exhibit strong green emissions under ultraviolet excitation,corresponding to^(5)D_(4)→^(7)F_(J)transitions of Tb^(3+).Interestingly,Tb-MOFs displayed an efficient and distinct luminescence quenching by Cu^(2+)in aqueous solutions.The competitive fluorescence detection experiments indicate that these Tb-MOFs sensors can be used as a high selective and sensitive sensor of Cu^(2+)detection with the detection limit of 10μmol·L^(-1),which can be used as a promising fluorescence sensor for Cu^(2+)detection in daily life.
文摘Introduction Tufted angioma (TA) is an uncommon vascular tumor.It most presents variable clinical appearances during infancy and early childhood.TA usually presents clinically as a large,plaque-like,red or dusky blue-purple,infiltrated lesion,or an exophytic,firm,violaceous,cutaneous nodule.TA is commonly solitary,but multifocal cases have been reported[1].Histologically,TA demonstrates vascular tufts of tightly packed capillaries,randomly dispersed throughout the dermis in a typical model of 'cannonball distribution' with crescent spaces surrounding the vascular tufts and lymphatic-like spaces within the tumor stromal.
