AIE-active tetraphenylethene functionalized metal–organic framework for selective detection of nitroaromatic explosives and organic photocatalysis
作者:Qiu-Yan Li、Zheng Ma、Wen-Qiang Zhang、Jia-Long Xu、Wei Wei、Han Lu、Xinsheng Zhao、Xiao-Jun Wang
DOI:10.1039/c6cc04997d
日期:——
A luminescent MOF containing an AIE-active TPE moiety works as a selective sensor for detecting nitroaromatic explosives, as well as an efficient heterogeneous photocatalyst for CDC reactions mediated by visible light.
A novel stable radical cation triarylaminiumsalt able to induce aerobic oxidative α-C–H functionalization of tertiary amines in catalytic amounts has been developed. The reaction is performed in the absence of any other additives under mild conditions and only requires atmosphere air as a sustainable co-oxidant.
An elegant cascade cross‐coupling and in situ hydrogenation reaction has been established by visiblelightcatalysis. Combining cheap and earth‐abundant eosin Y as a photosensitizer and the cobalt chloride complex, Co(dmgH)2Cl2 (dmgH=dimethylglyoximate), as a catalyst, the desired oxidative cross‐coupling products and reductive hydrogenation products could be achieved in good to excellent yields without
copper(I) complexes containing phenanthroline and monoanionic nido‐carborane‐diphosphine ligands have been prepared and structurally characterized by various spectroscopic techniques and X‐ray diffraction. These complexes exhibit intense absorptions in the visible range and excited‐state lifetimes on the microsecond scale. Their application in visible‐light‐induced cross‐dehydrogenative coupling reactions
制备了四种含有邻菲咯啉和单阴离子的Nido-碳硼烷-二膦配体的杂铜(I)配合物,并通过各种光谱技术和X射线衍射对其结构进行了表征。这些络合物在可见光范围内表现出强烈的吸收,并在微秒级上具有激发态寿命。研究了它们在可见光诱导的交叉脱氢偶联反应中的应用。初步研究表明,四种铜(I)配合物之一是使用氧作为氧化剂进行光诱导的氧化CH官能化的有效催化剂。此外,通过对我们的Cu I混合物进行光照射(λ > 420 nm)以良好的优异产率获得了α-官能化的叔胺。复杂的叔胺和各种亲核试剂(硝基烷,丙酮或吲哚)在有氧条件下。电子顺磁共振测量提供了在这些光催化反应中形成超氧自由基阴离子(O 2 -⋅)而不是单线态氧(1 O 2)的证据。
Platinum(II) Schiff Base Complexes as Photocatalysts for Visible-Light-Induced Cross-Dehydrogenative Coupling Reactions
作者:Deepak Prakash Shelar、Ting-Ting Li、Yong Chen、Wen-Fu Fu
DOI:10.1002/cplu.201500157
日期:2015.10
Four phosphorescent platinum(II) Schiff base complexes are screened for application in visible-light-induced cross-dehydrogenative coupling (CDC) reactions. Preliminary studies show that, among the four platinum(II) complexes, Pt3 is an efficient catalyst for CDC reactions with oxygen as an oxidant. Light irradiation (λ>420 nm) on a mixture of the PtII complex, tertiaryamine, and a variety of nucleophiles