Substitution Reaction of Tetracyanoethylene with Acetone-Anils
摘要:
AbstractThe products from the condensation of acetone‐anils (1) and TCNE reaction were characterized after separation. The main products, tricyanoethylene derivatives (7–9) were isolated with the malonodinitrile derivatives (10–12), respectively. The [2+2] cycloaddition product (13), namely 5‐methoxy‐3,4‐(2′,2′,3′,3′‐tetracyanocyclobutano)‐l,2‐dihydro‐2,2,4‐trimethylquinoline also has been isolated. The distribution of these three products is substituent dependent.
Efficient Green Coumarin Dopants for Organic Light-Emitting Devices
作者:Meng-Ting Lee、Chia-Kuo Yen、Wen-Ping Yang、Hsian-Hung Chen、Chi-Hung Liao、Chih-Hung Tsai、Chin H. Chen
DOI:10.1021/ol049903d
日期:2004.4.1
[GRAPHICS]We have synthesized a new green fluorescent dopant C-545P having incorporated five strategically placed "methyl" steric spacers on the julolidyl ring system. C-545P has good thermal properties and photostability, and when fabricated as a dopant in an Alq(3)-hosted OLED device, it shows notable improvement in luminance efficiency and is more resistant to concentration quenching than C-545T, particularly in the doping concentration range between 1 and 2% v/v, while achieving comparable device stability.