使用三步工艺,从N(甲苯基)3开始,以高度分散的方式,以高收率获得了新的对称和不对称的B,N,B掺杂的苯并[4]螺旋3-6 a / b(7例子)。发现硼酸官能化的1,4-B,N-蒽1显示出前所未有的反应活性,可作为选择性形成溴取代的B,N,B-苯并[4]螺旋烯2 a /的便捷高效前体。在存在BBr 3的情况下,通过分子内的硼酸化和顺序的B-Mes键裂解,图2b所示。随后2 a / 2 b与Ar-Li的反应为制备对称/不对称官能化的B,N,B-螺旋烯提供了一个高效的工具箱。
triphosphaazatriangulene (H3 L) was synthesized through an intramolecular triple phospha-Friedel-Crafts reaction. The H3 L triangulene contains three phosphinate groups and an extended π-conjugated framework, which enables the stimuli-responsive reversible transformation of [Cu(HL)(DMSO)⋅(MeOH)]n , a 3D-MOF that exhibits reversible sorption characteristics, into (H3 L⋅0.5 [Cu2 (OH)4 ⋅6 H2 O] ⋅4 H2 O), a 1D-columnar
通过分子内三磷-Friedel-Crafts反应合成了三磷杂三氮杂蒽(H3L)。H3 L triangulene包含三个次膦酸酯基团和一个扩展的π共轭骨架,可实现[Cu(HL)(DMSO)⋅(MeOH)] n的刺激响应可逆转化,这是一种具有可逆吸附特性的3D-MOF,变成(H3L⋅0.5[Cu2(OH)4⋅6H2 O]⋅4H2 O),这是一维柱状组装的质子传导材料。后者的亲水性导致在95%相对湿度和60°C下的质子传导率为5.5×10-3 S cm-1。
Multiple Resonance Effect-Induced Sky-Blue Thermally Activated Delayed Fluorescence with a Narrow Emission Band
Efficient thermallyactivated delayed fluorescence materials based on the multiple resonance effect were synthesized by nucleophilic substitution and electrophilic C-H borylation, featuring a small energy gap between the singlet and triplet state, high photoluminescence quantum yield, and narrow emission band. Organic light-emitting diodes employing these materials as emitters exhibited sky-blue emission
Synthesis and characterization of cationic iron complexes supported by the neutral ligands NP<sup><i>i</i>-Pr</sup><sub>3</sub>, NArP<sup><i>i</i>-Pr</sup><sub>3</sub>, and NS<sup><i>t</i>-Bu</sup><sub>3</sub>
作者:Cora E MacBeth、Seth B Harkins、Jonas C Peters
DOI:10.1139/v05-017
日期:2005.4.1
redox properties of a series of iron complexes supported by neutral, tetradentate NP_3 (tris(phosphine)amine) and NS_3 (tris(thioether)amine) ligands. Our consideration of an Fe-mediated N_2 fixation scheme similar to that proposed by Chatt for molybdenum motivates our interest in systems of these types. This report specifically describes the synthesis and characterization of cationic Fe(II) chloride
By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings is linked via a nitrogen atom, a boron atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.