Supramolecular organic frameworks(SOFs),due to the atomically precise integration of the repeated building units,exhibit intriguing properties and consequently potential applications in chemical and materials science ...Supramolecular organic frameworks(SOFs),due to the atomically precise integration of the repeated building units,exhibit intriguing properties and consequently potential applications in chemical and materials science communities.However,it remains a great challenge to achieve SOFs with ultralong organic phosphorescence(UOP)in a singlecomponent system.Herein,we report metal-free organic compound 9,9′-(6-(2-bromophenethoxy)-1,3,5-triazine-2,4-diyl)bis(9H-carbazole)(DCzPO)with UOP behavior.Owing to the combination of multiple supramolecular interactions,DCzPO formed a SOF structure with regular hexagonal holes,which shows an ultralong emission lifetime of 398 ms and a phosphorescence efficiency of 3%.So far as we know,among the reported luminescent SOFs,this one is the most highly efficient.This single-component SOF with ultralong phosphorescence will provide a new platform to rationally combine UOP and porous materials.展开更多
基金supported by the National Natural Science Foundation of China(nos.21975120,21875104,21973043,91833304,and 91833302)the National Key R&D Program of China(no.2020YFA0709900)+2 种基金the Natural Science Fund for Distinguished Young Scholars of Jiangsu Province(no.BK20180037)the China National Postdoctoral Program for Innovative Talents(no.BX20200278)the China Postdoctoral Science Foundation(no.2020M673478).
文摘Supramolecular organic frameworks(SOFs),due to the atomically precise integration of the repeated building units,exhibit intriguing properties and consequently potential applications in chemical and materials science communities.However,it remains a great challenge to achieve SOFs with ultralong organic phosphorescence(UOP)in a singlecomponent system.Herein,we report metal-free organic compound 9,9′-(6-(2-bromophenethoxy)-1,3,5-triazine-2,4-diyl)bis(9H-carbazole)(DCzPO)with UOP behavior.Owing to the combination of multiple supramolecular interactions,DCzPO formed a SOF structure with regular hexagonal holes,which shows an ultralong emission lifetime of 398 ms and a phosphorescence efficiency of 3%.So far as we know,among the reported luminescent SOFs,this one is the most highly efficient.This single-component SOF with ultralong phosphorescence will provide a new platform to rationally combine UOP and porous materials.
