Synchronous double C–N bond formation via C–H activation for a novel synthetic route to phenazine
作者:Kapileswar Seth、Sudipta Raha Roy、Asit K. Chakraborti
DOI:10.1039/c5cc08640j
日期:——
A novel synthetic strategy for phenazine formation is reported following self coupling of anilines by Pd-Ag binary nanocluster-catalysed synchronous double C-N bondformation via non-radical mode of ortho-aryl C-Hactivation.
Oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′-diamines (BINAMs) <i>via</i> C–C bond cleavage and nitrogen migration: a versatile synthesis of U-shaped azaacenes
作者:Youhei Takeda、Masato Okazaki、Satoshi Minakata
DOI:10.1039/c4cc04911j
日期:——
An oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′-diamines (BINAMs) that involves the cleavage of a strong C–C single bond of the binaphthalene unit and the nitrogen migration has been discovered.
Organic chemistry of superoxide. II oxidation of β-naphthylamine - possible involvement of the hydroxyl radical
作者:G. Crank、M.I.H. Makin
DOI:10.1016/s0040-4039(00)88122-8
日期:1983.1
Of a selection of aromatic monoamines examined only β-naphthylamine was oxidized by potassiumsuperoxide and formed dibenzo[a,h]phenazine, dibenzo[a,i]phenazine and 1-hydroxy-2,2′-azonaphthalene, the latter product indicating that the hydroxyl radical may be involved in superoxideoxidations.
Excited State Intramolecular Proton Transfer in π-Expanded Phenazine-Derived Phenols
作者:Joanna Piechowska、Kirsi Virkki、Bartłomiej Sadowski、Helge Lemmetyinen、Nikolai V. Tkachenko、Daniel T. Gryko
DOI:10.1021/jp411395c
日期:2014.1.9
position 10. Two bis-phenols possessing C2 and D2 symmetry were obtained in yields of 52% and 15%, respectively. The occurrence of excitedstate intramolecular protontransfer (ESIPT) was detected in all cases because steady state emission was observed only from the excited keto-tautomer. Additionally, a short-lived, ∼0.1 ps, emission decay was resolved by the femtosecond up-conversion technique at the
通过一种简单的策略制备了两个以前无法获得的10-羟基苯并[ h ]喹啉类似物,包括形成π扩展的吩嗪骨架,然后在位置10进行C–H乙酰氧基化。两个具有C 2和D 2的双酚。获得对称性的产率分别为52%和15%。在所有情况下均检测到发生了激发态分子内质子转移(ESIPT),因为仅从激发的酮-互变异构体观察到稳态发射。此外,通过飞秒上转换技术在酮-互变异构体发射谱带的蓝色端610 nm处解决了短暂的〜0.1 ps发射衰减,这归因于ESIPT,即从烯醇转化为烯醇酮互变异构体。与相应的10-羟基苯并[ h ]喹啉发射相比,π-扩展的吩嗪类似物的发射光谱较弱,但显示出向红移近红外的特征。这些吩嗪类似物构成了明确检测到ESIPT的最大杂环之一。
Organic light-emitting diode devices with improved operational stability
申请人:Eastman Kodak Company
公开号:US20040076853A1
公开(公告)日:2004-04-22
An organic light-emitting device includes a substrate, an anode and a cathode disposed over the substrate, and a luminescent layer disposed between the anode and the cathode wherein the luminescent layer includes a host and at least one dopant. The host of the luminescent layer is selected to include a solid organic material comprising a mixture of at least two components, one of which is capable of forming both monomer state and an aggregate state.