Tris(8-hydroxyquinolinato)aluminium(AlQ_(3)),a classic fluorescent molecule insensitive to oxygen,is encapsulated as a vip fluorophore into a highly porous coordination framework[Zn_(4)O(bpz)_(2)(bdc)](MAF-X10,H_(2)...Tris(8-hydroxyquinolinato)aluminium(AlQ_(3)),a classic fluorescent molecule insensitive to oxygen,is encapsulated as a vip fluorophore into a highly porous coordination framework[Zn_(4)O(bpz)_(2)(bdc)](MAF-X10,H_(2)bpz=3,3’,5,5’-tetramethyl-4,4’-bipyrazole,H_(2)bdc=1,4-benzenedicarboxylic acid)to obtain a highly luminescent host-vip hybrid material AlQ_(3)@MAF-X10 combining the advantages of excellent fluorescence of AlQ_(3),high oxygen permeability of MAF-X10,and the resonance energy transfer between AlQ_(3) and MAF-X10.Photoluminescence studies showed that AlQ_(3)@MAF-X10 exhibits yellowish green fluorescence with a Stokes shift(9606 cm^(-1))as large as those of phosphorescent noble metal complexes,long lifetime(37.4 ns)and a considerable oxygen permeability(4.4×10^(-9) mol cm^(-1) s^(-1) bar^(-1)),giving rise to high oxygen sensitivity(88.5% quenched at 1 bar,i.e.,I_(0)/I_(100)=8.7,K_(SV)=7.6 bar^(-1))with fast response and good reversibility.展开更多
基金supported by the“973 Project”(2014CB845602 and 2012CB821706)NSFC(21225105,21290173,and 21473260).
文摘Tris(8-hydroxyquinolinato)aluminium(AlQ_(3)),a classic fluorescent molecule insensitive to oxygen,is encapsulated as a vip fluorophore into a highly porous coordination framework[Zn_(4)O(bpz)_(2)(bdc)](MAF-X10,H_(2)bpz=3,3’,5,5’-tetramethyl-4,4’-bipyrazole,H_(2)bdc=1,4-benzenedicarboxylic acid)to obtain a highly luminescent host-vip hybrid material AlQ_(3)@MAF-X10 combining the advantages of excellent fluorescence of AlQ_(3),high oxygen permeability of MAF-X10,and the resonance energy transfer between AlQ_(3) and MAF-X10.Photoluminescence studies showed that AlQ_(3)@MAF-X10 exhibits yellowish green fluorescence with a Stokes shift(9606 cm^(-1))as large as those of phosphorescent noble metal complexes,long lifetime(37.4 ns)and a considerable oxygen permeability(4.4×10^(-9) mol cm^(-1) s^(-1) bar^(-1)),giving rise to high oxygen sensitivity(88.5% quenched at 1 bar,i.e.,I_(0)/I_(100)=8.7,K_(SV)=7.6 bar^(-1))with fast response and good reversibility.
