Bianthracene compounds substituted by aromatic ring and their uses for luminescence materials
申请人:Cai Lifei
公开号:US20120309974A1
公开(公告)日:2012-12-06
The present invention relates to Aromatic ring substituted dianthracene compounds and pertains to the field of synthesis of organic light-emitting materials. Aromatic ring substituted dianthracene compounds in the formula (I) present high glass transition temperature and solution efficiency, which can be used as effective blue-light emitting host materials.
A series of 1,3,5-phenylene-based rigid dendriticporphyrins were synthesized by Suzuki coupling between a porphyrin core and dendron units. The intramolecularenergytransfer was studied by absorption and fluorescence spectroscopies. The encapsulation of the porphyrin core within the 1,3,5-phenylene dendron units was found to provide highly efficient energytransfer from the dendron units to the porphyrin
emission both in solution and in solid thin film. This compound has a non-planar structure that results in high thermal stability and the phenomenon of polymorphism. The non-doped device based on this material shows stable deep-blue emission with the 1931 Commission international de I’Eclairage (CIE) coordinate of (0.15, 0.05) under different applied voltages. The device exhibits the maximum external quantum
通过Suzuki偶联反应合成了新的蒽衍生物9,10-双[3,5-二(4-叔丁基苯基)苯基]蒽(BPPA),并通过1 H NMR谱,质谱和元素分析进行了表征。BPPA在溶液和固体薄膜中均显示深蓝色发射。该化合物具有非平面结构,从而导致高热稳定性和多态现象。在不同施加电压下,基于这种材料的非掺杂器件在1931年国际照明委员会(CIE)坐标为(0.15,0.05)时显示稳定的深蓝色发射。该器件在14.9 mA / cm 2的亮度为105 cd / m 2的情况下具有2.2%的最大外部量子效率。
Photo-Rechargeable Battery Effect in First Generation Cationic-Cyanine Dendrimers
作者:Ajay K. Pandey、Peter C. Deakin、Ross D. Jansen-Van Vuuren、Paul L. Burn、Ifor D. W. Samuel
DOI:10.1002/adma.200904464
日期:2010.9.15
A photobattery based on a cationic cyanine dendrimer is demonstrated. The battery can be recharged simply by exposure to light. The mechanism for charge storage and discharge is proposed.