Graphite Oxide as an Auto-Tandem Oxidation-Hydration-Aldol Coupling Catalyst
作者:Hong-Peng Jia、Daniel R. Dreyer、Christopher W. Bielawski
DOI:10.1002/adsc.201000748
日期:2011.3.7
Graphiteoxide (GO) was found to function as an auto‐tandem oxidation–hydration–aldolcouplingcatalyst for the formation of chalcones in a single reaction vessel. Various alkynes or alcohols were hydrated or oxidized in situ to their corresponding methyl ketones or aldehydes, respectively, which underwent a subsequent Claisen–Schmidt condensation. Each of the aforementioned reactions proceeded in
In this article, a photoredox protocol for the synthesis of furans via oxidative coupling of olefin generated in situ from cyclopropylketones with ketonic oxygen atom is presented. Moreover, bromination of furans in the presence of overstoichiometric oxidant has been achieved with high regioselectivity.
Tetradentate Gold(III) Complexes as Thermally Activated Delayed Fluorescence (TADF) Emitters: Microwave‐Assisted Synthesis and High‐Performance OLEDs with Long Operational Lifetime
作者:Dongling Zhou、Wai‐Pong To、Glenna So Ming Tong、Gang Cheng、Lili Du、David Lee Phillips、Chi‐Ming Che
DOI:10.1002/anie.201914661
日期:2020.4.16
those displaying thermally activated delayed fluorescence (TADF). Herein, a novel synthetic route leading to the preparation of highly emissive, charge-neutral tetradentate [C^C^N^C] gold(III) complexes with 5-5-6-membered chelate rings has been developed through microwave-assisted C-H bond activation. These complexes show high thermal stability and with emission origin (3 IL, 3 ILCT, and TADF) tuned by
结构坚固的四齿金(III)发射体具有强大的材料应用前景,但对于那些表现出热激活延迟荧光(TADF)的金属来说,却是罕见且空前的。本文中,通过微波辅助CH,开发了一种新颖的合成路线,该路线可制备具有5-5-6元螯合环的高发射电荷中性四齿[C ^ C ^ N ^ C]金(III)配合物。键激活。这些配合物显示出高的热稳定性,并且通过改变C 1 -C 2 -N 2 -C配体的取代基来调节发射源(3 IL,3 ILCT和TADF)。使用苯恶嗪/二苯胺取代基,我们制备了第一批四齿金(III)络合物,它们是TADF发射体,在脱氧甲苯中的发射量子产率高达94%,发射寿命长达0.62μs。