研磨固体材料时的发光(triboluminescence,TL)长期以来一直是自然科学中令人费解的现象,并且由于其在光学领域的广泛应用也引起了人们的关注。通常认为,TL光谱表现出与光致发光(PL)相似的轮廓,尽管它们来自不同的刺激。在本文中,我们首次使用具有有效TL和PL特性的镧系元素III配位聚合物,首次描述了这两种物理现象之间的大光谱差异。它们由排放中心组成(Tb III和Eu III离子),触角(六氟乙酰丙酮= hfa)和桥连配体(2,5-双(二苯基磷酰基)呋喃= dpf)。在Tb III / Eu III混合配位聚合物[Tb,Eu(hfa)3(dpf)] n(Tb / Eu = 1)。结果直接表明了PL和TL的离散激励过程。
申请人:NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
公开号:US10745614B2
公开(公告)日:2020-08-18
Disclosed is a rare-earth complex polymer including trivalent rare-earth ions and a phosphine oxide bidentate ligand represented by the formula (1). One phosphine oxide bidentate ligand is coordinated to the two rare-earth ions, and crosslinks the same.
申请人:NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
公开号:US20190119567A1
公开(公告)日:2019-04-25
Disclosed is a rare-earth complex polymer including trivalent rare-earth ions and a phosphine oxide bidentate ligand represented by the formula (1). One phosphine oxide bidentate ligand is coordinated to the two rare-earth ions, and crosslinks the same.
Triboluminescence of Lanthanide Coordination Polymers with Face-to-Face Arranged Substituents
lanthanideIII coordinationpolymers with efficient TL and PL properties. They are composed of emission centers (TbIII and EuIII ions), antenna (hexafluoroacetylacetonate=hfa), and bridging ligands (2,5‐bis(diphenylphosphoryl)furan=dpf). The emission color upon grinding (yellow TL) is clearly different from that upon UV irradiation (reddish‐orange PL) in TbIII/EuIII‐mixed coordinationpolymers [Tb,Eu(hfa)3(dpf)]n
研磨固体材料时的发光(triboluminescence,TL)长期以来一直是自然科学中令人费解的现象,并且由于其在光学领域的广泛应用也引起了人们的关注。通常认为,TL光谱表现出与光致发光(PL)相似的轮廓,尽管它们来自不同的刺激。在本文中,我们首次使用具有有效TL和PL特性的镧系元素III配位聚合物,首次描述了这两种物理现象之间的大光谱差异。它们由排放中心组成(Tb III和Eu III离子),触角(六氟乙酰丙酮= hfa)和桥连配体(2,5-双(二苯基磷酰基)呋喃= dpf)。在Tb III / Eu III混合配位聚合物[Tb,Eu(hfa)3(dpf)] n(Tb / Eu = 1)。结果直接表明了PL和TL的离散激励过程。
Mn-Catalyzed Electrooxidative Undirected C–H/P–H Cross-Coupling between Aromatics and Diphenyl Phosphine Oxides
作者:Siyuan Wang、Qilin Xue、Zhipeng Guan、Yayu Ye、Aiwen Lei
DOI:10.1021/acscatal.1c00549
日期:2021.4.2
in C–P bond formation since it requires no pretreatment of substrates. Herein, we reported a Mn-catalyzed electrochemical intermolecular dehydrogenative cross-coupling between aryl C–H and diphenylphosphineoxides. In undivided cells, a series of phosphorylation or diphosphorylation products could be obtained separately by adjusting the proportion of substrates. A catalytic amount of inexpensive Mn(II)