Premium
Induction of Strong Long‐Lived Room‐Temperature Phosphorescence of N ‐Phenyl‐2‐naphthylamine Molecules by Confinement in a Crystalline Dibromobiphenyl Matrix
Author(s) -
Wei Jinbei,
Liang Baoyan,
Duan Ruihong,
Cheng Zong,
Li Chenglong,
Zhou Tianlei,
Yi Yuanping,
Wang Yue
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201607653
Subject(s) - phosphorescence , materials science , fluorescence , doping , molecule , photochemistry , matrix (chemical analysis) , oled , optoelectronics , nanotechnology , chemistry , organic chemistry , optics , physics , layer (electronics) , composite material
Abstract The design and preparation of metal‐free organic materials that exhibit room‐temperature phosphorescence (RTP) is a very attractive topic owing to potential applications in organic optoelectronic devices. Herein, we present a facile approach to efficient and long‐lived organic RTP involving the doping of N ‐phenylnaphthalen‐2‐amine (PNA) or its derivatives into a crystalline 4,4′‐dibromobiphenyl (DBBP) matrix. The resulting materials showed strong and persistent RTP emission with a quantum efficiency of approximately 20 % and a lifetime of a few to more than 100 milliseconds. Bright white dual emission containing blue fluorescence and yellowish‐green RTP from the PNA‐doped DBBP crystals was also confirmed by Commission Internationale de l'Eclairage (CIE) coordinates of ( x= 0.29–0.31, y= 0.38–0.41).