We successfully synthesized a novel anionic luminescent metal-organic framework(MOF)(NENU-524)with a lonsdaleite topology.NENU-524 contains a trigonal prismatic unit{Zn_(8)(btca)_(6)(2-NH_(2)-bdc)_(3)}that can be rega...We successfully synthesized a novel anionic luminescent metal-organic framework(MOF)(NENU-524)with a lonsdaleite topology.NENU-524 contains a trigonal prismatic unit{Zn_(8)(btca)_(6)(2-NH_(2)-bdc)_(3)}that can be regarded as a double secondary building unit with an unusual triply bound triangular frustum geometry.The prepared NENU-524 had a permanent porosity and excellent stability in air.NENU-524 was used as a platform to encapsulate yellow-emitting[Ir(ppy)_(2)(bpy)]^(+)cations in the nanotube channels of the blue-emitting MOF via an ion-exchange process.The[Ir(ppy)_(2)(bpy)]^(+)@NENU-524 MOF([Ir(ppy)_(2)(bpy)]^(+)concentration 3.86 wt%)emitted a pure white light with CIE coordinates of(0.300,0.336)and a high quantum yield of up to 15.2%.The white light-emitting diodes assembled using[Ir(ppy)_(2)(bpy)]^(+)@NENU-524 as a white phosphor emitted a bright white light,suggesting that the composite is a promising material for use in lighting.The assembled white light-emitting diodes continued to emit a bright white light for up to one month.This simple and feasible approach could be used to develop luminescent luminophor@MOFs composites for practical applications.展开更多
基金National Natural Science Foundation of China(21622104,21371099,21401021,21471080)NSF of Jiangsu Province of China(BK20130043,BK20141445)+1 种基金Priority Academic Program Development of Jiangsu Higher Education InstitutionsFoundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials。
文摘We successfully synthesized a novel anionic luminescent metal-organic framework(MOF)(NENU-524)with a lonsdaleite topology.NENU-524 contains a trigonal prismatic unit{Zn_(8)(btca)_(6)(2-NH_(2)-bdc)_(3)}that can be regarded as a double secondary building unit with an unusual triply bound triangular frustum geometry.The prepared NENU-524 had a permanent porosity and excellent stability in air.NENU-524 was used as a platform to encapsulate yellow-emitting[Ir(ppy)_(2)(bpy)]^(+)cations in the nanotube channels of the blue-emitting MOF via an ion-exchange process.The[Ir(ppy)_(2)(bpy)]^(+)@NENU-524 MOF([Ir(ppy)_(2)(bpy)]^(+)concentration 3.86 wt%)emitted a pure white light with CIE coordinates of(0.300,0.336)and a high quantum yield of up to 15.2%.The white light-emitting diodes assembled using[Ir(ppy)_(2)(bpy)]^(+)@NENU-524 as a white phosphor emitted a bright white light,suggesting that the composite is a promising material for use in lighting.The assembled white light-emitting diodes continued to emit a bright white light for up to one month.This simple and feasible approach could be used to develop luminescent luminophor@MOFs composites for practical applications.
