Conjugated Asymmetric Donor‐Substituted 1,3,5‐Triazines: New Host Materials for Blue Phosphorescent Organic Light‐Emitting Diodes | Zendy

An ZhongFu | Zendy; Chen RunFeng | Zendy; Yin Jun | Zendy; Xie GuoHua | Zendy; Shi HuiFang | Zendy; Tsuboi Taiju | Zendy; Huang Wei | Zendy

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Conjugated Asymmetric Donor‐Substituted 1,3,5‐Triazines: New Host Materials for Blue Phosphorescent Organic Light‐Emitting Diodes

Author(s) -

An ZhongFu,

Chen RunFeng,

Yin Jun,

Xie GuoHua,

Shi HuiFang,

Tsuboi Taiju,

Huang Wei

Publication year - 2011

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201101118

Subject(s) - phosphorescence , quantum yield , homo/lumo , thermostability , conjugated system , photochemistry , quantum efficiency , fluorescence , materials science , oled , solubility , optoelectronics , chemistry , polymer , nanotechnology , organic chemistry , physics , molecule , optics , layer (electronics) , enzyme

Conjugated asymmetric donor‐substituted 1,3,5‐triazines (ADTs) have been synthesized by nucleophilic substitution of organolithium catalyzed by [Pd(PPh 3 ) 4 ]. Theoretical and experimental investigations show that ADTs possess high solubility and thermostability, high fluorescent quantum yield (35 %), low HOMO (−6.0 eV) and LUMO (−2.8 eV), and high triplet energy ( E T , 3.0 eV) according to the different substitution pattern of triazine. The application as host materials for blue PHOLEDs yielded a maximum current efficiency of 20.9 cd A −1 , a maximum external quantum efficiency of 9.8 %, and a brightness of 9671 cd m −2 at 5.4 V, making ADTs good candidates for optoelectronic devices.

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