A novel pillar[5]arene(P5DPB)that includes a classicalπ-conjugated molecule,4,4'-(1,4-phenylenedi-2,1-ethenediyl)bis-pyridine(DPB),was designed and synthesized as a substituent.Because of this modification,P5DPB ...A novel pillar[5]arene(P5DPB)that includes a classicalπ-conjugated molecule,4,4'-(1,4-phenylenedi-2,1-ethenediyl)bis-pyridine(DPB),was designed and synthesized as a substituent.Because of this modification,P5DPB exhibits several unique properties that differ from those of common pillar[5]arenes.The P5DPB neutral pyridine shows good selectivity for Ag^(+)and Fe^(3+).The presence of Ag^(+)ions cause a blue shift(from yellow-green to green)and a decrease in the intensity of the P5DPB emission,while the addition of Fe^(3+)significantly quenches the P5DPB fluorescence.In addition,P5DPB satisfies the conditions for the construction of an energy transfer system with the commonly used Rhodamine B dye and shows great potential for the development of artificial light-harvesting systems.This work provides a new approach for the construction of energy transfer systems and a new reference for metal detection based on derivatized pillar[n]arenes,greatly enriching the applications of these systems.展开更多
基金supported by the National Natural Science Foundation of China(No.21861011)the Innovation Program for High-level Talents of Guizhou Province(No.2016-5657)the Graduate Scientific Research Fund of Guizhou Province(No.YJSKYJJ[2021]021).
文摘A novel pillar[5]arene(P5DPB)that includes a classicalπ-conjugated molecule,4,4'-(1,4-phenylenedi-2,1-ethenediyl)bis-pyridine(DPB),was designed and synthesized as a substituent.Because of this modification,P5DPB exhibits several unique properties that differ from those of common pillar[5]arenes.The P5DPB neutral pyridine shows good selectivity for Ag^(+)and Fe^(3+).The presence of Ag^(+)ions cause a blue shift(from yellow-green to green)and a decrease in the intensity of the P5DPB emission,while the addition of Fe^(3+)significantly quenches the P5DPB fluorescence.In addition,P5DPB satisfies the conditions for the construction of an energy transfer system with the commonly used Rhodamine B dye and shows great potential for the development of artificial light-harvesting systems.This work provides a new approach for the construction of energy transfer systems and a new reference for metal detection based on derivatized pillar[n]arenes,greatly enriching the applications of these systems.
