Istituto per lo Studio delle Macromolecole (ISMAC), Consiglio Nazionale delle Ricerche, CNR, Via Bassini 15, 20133 Milano, Italy.
Chemphyschem. 2010 Feb 22;11(3):683-8. doi: 10.1002/cphc.200900771.
Dendronic antennae systems containing pyrene units as energy donors and a styrylpyridinium derivative as energy acceptor show efficient energy transfer from the green-emitting pyrene excimer to the red-emitting acceptor. For the third dendron generation the effective screening of the pyrene units on the acceptor provides thin films showing bright red emission. Single-layer light-emitting diodes prepared by properly balancing the dendrons and donor units concentration in polyvinylcarbazole show electroluminescence from the blue, green and red components of the monomeric donor, the donor excimer and the acceptor when excitons are generated in the polymer and subsequently transferred to the molecules by resonant energy transfer.
含芘单元作为能量供体和苯乙烯吡啶鎓衍生物作为能量受体的树枝状天线系统显示出从绿色发射的芘激基复合物到红色发射的受体的有效能量转移。对于第三代树枝状，受体上芘单元的有效屏蔽提供了显示亮红色发射的薄膜。通过适当平衡聚甲基丙烯酸甲酯中的树枝状分子和供体单元浓度制备的单层发光二极管，当激子在聚合物中产生并通过共振能量转移随后转移到分子时，从单体供体、供体激基复合物和受体的蓝色、绿色和红色组分发出电致发光。
