Germanium-Bridged 2-Phenylbenzoheteroles as Luminophores Exhibiting Highly Efficient Solid-State Fluorescence
作者:Masaki Shimizu、Daiki Ryuse、Takumi Kinoshita
DOI:10.1002/chem.201703235
日期:2017.10.17
for organic luminophores that exhibit highly efficient solid-statefluorescence. It is found that [1]benzogermolo[3,2-b]indole, -benzofuran, and -thiophene-S,S-dioxide emit violet-to-blue light with good-to-high quantum yields in powder form, demonstrating the high potential of such bilaterally unsymmetrical germylene-bridged biaryls as solid-state light-emitting materials (see scheme).
锗桥:在2-苯基苯并杂环上添加Ge桥作为有机发光体的新分子设计原理是有效的,有机发光体表现出高效的固态荧光。发现[1] benzogermolo [3,2- b ]吲哚,-苯并呋喃和-噻吩-S,S-二氧化物以粉状形式发射紫红色到蓝色的光,具有良好到高的量子产率,证明了这种双侧不对称的亚甲基桥接的联芳基作为固态发光材料的潜力很大(请参见方案)。
Reductive coupling reactions of dihalogenogermanes with magnesium and magnesium bromide: simple preparation of cyclotrigermanes and cyclotetragermanes
作者:Wataru Ando、Takeshi Tsumuraya
DOI:10.1039/c39870001514
日期:——
The reactions of various dihalogenogermanes with Mg and MgBr2 in tetrahydrofuran produce the corresponding cyclotrigermanes and cyclotetragermanes; the ring size of the products depends on the steric bulk of substituents on germanium.
This report describes the synthesis and characterization of arene-inserted extended (ArEx) germa[n]pericyclynes composed of germanium and 1,4-diethynylbenzene units. These novel cyclic germanium-π unit materials were synthesized with diethynylbenzene and germanium dichloride. X-ray crystallographic analysis revealed their structures, and the planar conformation of ArEx germa[4]pericyclyne along with
该报告描述了由锗和1,4-二乙炔基苯单元组成的芳烃插入的扩展(ArEx)菌种[ n ]环炔的合成和表征。这些新的环状锗-π单元材料是用二乙炔基苯和二氯化锗合成的。X射线晶体学分析揭示了它们的结构,以及ArEx胚芽[4]周环炔与规则的芳环的平面构象。与以前报道的菌种[ n ]周环相比较,UV / Vis吸收光谱和荧光发射光谱显示出相当独特且高度改善的特性。即使不存在过渡金属成分,也观察到磷光发射,并且发射寿命显着提高。ArEx细菌[ n环周炔化合物显示出高的光致发光量子产率,而对于无环化合物则观察到了低的光致发光量子产率。密度泛函理论计算表明,跳过的炔烃单元之间通过锗系链发生了离域化轨道,并且HOMO能级增加,导致HOMO-LUMO能隙较小。
Synthesis and characterization of germa[n]pericyclynes
The synthesis and characterization of novel pericyclynes comprising germanium atoms and acetylenes, germa[n]pericyclynes, are described. The prepared germa[4]-, [6]-, and [8]pericyclynes were compared by 13C NMR spectroscopy, X-raycrystallography, cyclic voltammetry, UV-visible spectroscopy, fluorescence emission spectroscopy, Ramanspectroscopy, and density functional theory calculation analyses
描述了包括锗原子和乙炔的新的周长环炔的合成和表征,即菌种[ n ]周长环。通过13 C NMR光谱,X射线晶体学,循环伏安法,UV-可见光谱,荧光发射光谱,拉曼光谱和密度泛函理论比较了制备的胚芽[4]-,[6]-和[8]周环素。计算分析。
Stepwise synthesis and characterization of germa[4], [5], [8], and [10]pericyclynes