Synthesis And Photoluminescence Properties Of Loaded Metal-Organic Frameworks Thin Film Materials

As a new family of hybrid inorganic-organic materials with large porosity,metal-organic frameworks(MOFs)have received attractive attention recently on loading functional guest species.Although the loading of luminescent guest into bulk MOFs can tune the luminescent property,the powder composite materials are limited to the application in optical sensors and devices.In the present work,we use a modified liquid-phase epitaxial(LPE)pump method for the fabrication of lanthanide coordination compounds(LCCs)-loaded MOFs thin film on substrate with high loading efficiency.The resultant composite film reveals an oriented and homogeneous composite film,in which a white light emission by tuning the LCCs of red,blue and green emission can be obtained.This strategy may open new perspectives for developing high-loading-efficiency,oriented,and homogeneous solid-state lighting composite films in the application of optical sensors and devices.Organic-inorganic hybrid lead organohalide perovskites are inexpensive materials for high-efficiency photovoltaic solar cells,optical properties,and superior electrical conductivity.However,the fabrication of their quantum dots(QDs)with uniform ultrasmall particles is still a challenge.Here we use oriented microporous MOFs thin film prepared by LPE approach as a template for CH3NH3PbI2X(X = Cl,Br,and I)perovskite QDs fabrication.By introducing the PbI2 hand CH3NH3X(MAX)precursors into MOFs HKUST-1(Cu3(BTC)2,BTC = 1,3,5-benzene tricarboxylate)thin film in a stepwise approach,the resulting MAPbI2X(X = Cl,Br,and I)perovskite QDs with uniform diameters of 1.5-2 nm match the pore size of HKUST-1.Furthermore,the photoluminescent properties and stability in the moist air of the perovskite QDs loaded HKUST-1 thin film were studied.This confined fabrication strategy demonstrates that the perovskite QDs loaded MOFs thin film will be insensitive to air exposure and offers a novel means of confining the uniform size of the similar perovskite QDs according to the oriented porous MOFs materials.The loading of guest molecules into the nanoporous of MOFs can tune the property.MOFs can be grown to be MOFs thin film by LPE,the thin film materials allows us to be better,more flexible and more efficient electronic or optical devices.Loading LCCs into the nanoporous of MOFs thin films with excellent and tunable luminescent properties can be applied to advanced photoelectric or optical devices.Nanoporous of MOFs thin film as for preparing,loading and synthesizing perovskite QDs with excellent luminescent properties.