CN-TPB-TPA-UDP糖丨MOF丨金属有机框架丨聚集诱导发光丨荧光标记推荐西安齐岳生物

TPB-AC和TPB-TPA-CN具有给体-π-受体结构,其中四苯基苯(TPB)为π-共轭桥,氰基为受体基团,三苯胺(TPA)和二苯胺(DPA)分别为给体基团的AIE材料。为了揭示TPB-AC和TPB-TPA-CN非掺杂器件的机理,首先测量了不同电流密度下的磁电致发光( MEL )响应。众所周知,磁场效应( MFE )可以有效地证明单重态激子和三重态激子之间的自旋转换过程，因为各种内部动力学过程的指纹线形状不同。TPB-AC和TPB-TPA-CN非掺杂器件的MEL线形状在外磁场作用下首先在低场区域增加,然后在高场区域减少,并且不随电流密度变化,这与之前的报导的存在T n→S 1转换的AIE材料-致。计算了激发态能级, TPB-AC存在T 2-→S 1的转换过程,TPB-TPA-CN存在T 3- +S 1的转换过程。得益于T n-→S 1跃迁,非掺杂的TPB-AC和TPB-TPA-CN OLED的外量子效率( EQE max )分别达到8.7%和7.7% ,超过了传统的荧光OLED的理论限制。

CN-TPB-TPA

novel AIEgens of CN-TPB-AD and CN-TPB-TPA, in which the electron donating groups of 9,9-dimethylacridan (AD) and triphenylamine (TPA) were attached on TPB cores together with the same acceptor of the cyano group, respectively, were designed and prepared. The cyano group not only reduces the lowest unoccupied molecular orbital (LUMO) energy level and lowers the electron injection obstacle of devices, but also can improve intermolecular interactions.32 Meanwhile, CN-TPB-TPA possesses high PLQY and could realize a high proportion of horizontal orientation. Moreover, this molecule also owns superior electron and hole transporting capabilities. As a result, the optimized non-doped deep blue OLED with CN-TPB-TPA as an emitting layer (EML) realizes a maximum forward-viewing EQE of 7.27% with CIE coordinates of (0.15, 0.08). Notably, even at a high luminance of 1000 cd m2 , the EQE maintains 6.62% with a low operation voltage of 3.0 V.

产地：西安

用途：科研

类型：AIE材料

供应商：西安齐岳生物