1613668-57-7Relevant articles and documents
A versatile hybrid polyphenylsilane host for highly efficient solution-processed blue and deep blue electrophosphorescence
Sun, Dianming,Zhou, Xiaokang,Li, Huihui,Sun, Xiaoli,Zheng, Yonghao,Ren, Zhongjie,Ma, Dongge,Bryce, Martin R.,Yan, Shouke
, p. 8277 - 8284 (2015/02/19)
A universal hybrid polymeric host (PCzSiPh) for blue and deep blue phosphors has been designed and synthesized by incorporating electron-donating carbazole as pendants on a polytetraphenylsilane main chain. The polymer PCzSiPh (4) has a wide bandgap and high triplet energy (ET) because of the tetrahedral geometry of the silicon atom in the tetraphenylsilane backbone. The distinct physical properties of good solubility, combined with high thermal and morphological stability give amorphous and homogenous PCzSiPh films by solution processing. As a result, using PCzSiPh as host with the guest iridium complex TMP-FIrpic gives blue phosphorescent organic light-emitting diodes (PhOLEDs) with overall performance which far exceeds that of a control device with poly(vinylcarbazole) (PVK) host. Notably, FIrpic-based devices exhibit a maximum external quantum efficiency (EQE) of 14.3% (29.3 cd A-1, 10.4 lm W-1) which are comparable to state-of-the-art literature data using polymer hosts for a blue dopant emitter. Moreover, the versatility of PCzSiPh extends to deep blue PhOLEDs using FIr6 and FCNIrpic as dopants, with high efficiencies of 11.3 cd A-1 and 8.6 cd A-1, respectively. This journal is
An efficient AIE-active blue-emitting molecule by incorporating multifunctional groups into tetraphenylsilane
Tang, Xiangyang,Yao, Liang,Liu, He,Shen, Fangzhong,Zhang, Shitong,Zhang, Huanhuan,Lu, Ping,Ma, Yuguang
supporting information, p. 7589 - 7592 (2014/07/07)
A multifunctional AIE-active molecule, CzPySiTPE, in which carbazole (Cz) and pyridine (Py) were attached to tetraphenylsilane to facilitate carrier injection has been designed and synthesized. Tetraphenylethene (TPE) was adopted to maintain efficient blue emission. Blue electroluminescent (EL) emission of CzPySiTPE was obtained with CIE coordinates of (0.16, 0.17) and an external quantum efficiency of 1.12 %. A multifunctional AIE-active molecule has been synthesized to combine the merits of carbazole, pyridine, and tetraphenylethene moieties. This molecule exhibits blue emission with CIE coordinates of (0.16, 0.17) and an external quantum efficiency of 1.12 % (see figure; AIE=aggregation induced emission).