In order to get an easy way to achieve the transformation from aggregation-caused quenching luminophores （ACQphores） to aggregation-induced emission luminogens （AIEgens）, we took aldehyde groups as the modifying g...In order to get an easy way to achieve the transformation from aggregation-caused quenching luminophores （ACQphores） to aggregation-induced emission luminogens （AIEgens）, we took aldehyde groups as the modifying group to decorate anthracene. The fluorescence performances of 9-anthraldehyde （AnA） and 9,10-anthracenedicarboxaldehyde （AnDA） in solution and aggregated state were studied. We found out that the aldehyde group can transform anthracene with aggregation-caused quenching properties to AIEgen. The single-crystal structures analy- sis of AnA and AnDA showed that their structure characteristics are responsible for the AIE properties of AnA and AnDA. On one hand, the aldehyde group can cause steric effects to lower intermolecular n-π packing style in aggregated state. On the other hand, intermolecular H-bonding interactions can restrict the intramolecular rotation and suppress internal charge transfer. These results may supply a new simple method for the transformation from ACQphores to AIEgens on the point of the molecular design.展开更多
Four novel organometallic compounds containing tin(Ⅳ),titanium(Ⅳ) and zirco-nium(Ⅳ) ions were synthesized and strong fluorescent emission was observed from two tin(Ⅳ) complexes.
基金We are grateful for the Basic Research Program 2013CB834704）, and the support from the National of China （973 Program, National Natural Science Foundation of China （Nos. 51328302, 21404010, 51073026, 51061160500）.
文摘In order to get an easy way to achieve the transformation from aggregation-caused quenching luminophores （ACQphores） to aggregation-induced emission luminogens （AIEgens）, we took aldehyde groups as the modifying group to decorate anthracene. The fluorescence performances of 9-anthraldehyde （AnA） and 9,10-anthracenedicarboxaldehyde （AnDA） in solution and aggregated state were studied. We found out that the aldehyde group can transform anthracene with aggregation-caused quenching properties to AIEgen. The single-crystal structures analy- sis of AnA and AnDA showed that their structure characteristics are responsible for the AIE properties of AnA and AnDA. On one hand, the aldehyde group can cause steric effects to lower intermolecular n-π packing style in aggregated state. On the other hand, intermolecular H-bonding interactions can restrict the intramolecular rotation and suppress internal charge transfer. These results may supply a new simple method for the transformation from ACQphores to AIEgens on the point of the molecular design.
基金Project supported by the National Natural Science Foundation of China (No. 69637010)the National Key Laboratory of Crystal Materials, Shandong University of China
文摘 Four novel organometallic compounds containing tin(Ⅳ),titanium(Ⅳ) and zirco-nium(Ⅳ) ions were synthesized and strong fluorescent emission was observed from two tin(Ⅳ) complexes.
基金supported by the National Key R&D Program of China (Grant Nos. 2018YFA0209101 and 2017YFA0303700)the National Science Foundation of China (Grant NOs. 21922302, 21873047, 91833305, and 91850105)
