Pyrene-based blue AIEgens: tunable intramolecular conjugation, good hole mobility and reversible mechanochromism
作者:Jie Yang、Qingxun Guo、Xiaodong Wen、Xuming Gao、Qian Peng、Qianqian Li、Dongge Ma、Zhen Li
DOI:10.1039/c6tc02533a
日期:——
including TPE-2Py(p,1), TPE-2Py(m,1), TPE-2Py(p,2), TPE-2Py(m,2), TPE-2Py(p,4) and TPE-2Py(m,4), were designed by combining a TPE core and pyrene side groups. Modifying the linkage modes of TPE (para to meta-position) and pyrene units (1- to 2- to 4-position), their EL emissions in standard OLEDs devices were tuned from sky blue (484 nm) to deep blue (452 nm). Because of the good interaction between the pyrene
六个蓝色AIEgen,包括TPE-2Py(p,1),TPE-2Py(m,1),TPE-2Py(p,2),TPE-2Py(m,2),TPE-2Py(p,4)和TPE-2Py(m,4)是通过结合TPE核心和pyr侧基而设计的。修改TPE联动模式(对位到元-位置)和pyr单元(1到2至4位置),它们在标准OLED器件中的EL发射从天蓝色(484 nm)调整为深蓝色(452 nm)。由于the侧基之间的良好相互作用,目标化合物显示出增强的空穴传输能力。当在具有或不具有空穴传输层的OLED中制造为发射器时,所有发射器均表现出蓝色发射和可比的EL性能。而且,所有这些AIEgen均显示出优异的可逆机械致变色特性,具有从晶体状态到非晶态的最大发射峰大于40 nm的不同峰,为它们提供了在光电领域的其他应用。