2′-dimethoxy-[1,1′-biphenyl]) (L) was synthetized, structurally characterized by X-ray crystallography and combined with HgCl2, CoCl2, or ZnSiF6 for the formation of three coordination polymers ((HgCl2)2(L), (CoCl2)2(L)2.CHCl3, and Zn(SiF6)(L)2). The crystal structures of synthesis compound indicate the formation of different types of coordination modes, and each adopts a mono (1D) or tri-dimensional (3D) framework
本研究合成了 3,3'-二(吡啶-4-基)-(2,2'-二甲氧基-[1,1'-联苯]) ( L ), 通过 X 射线晶体学对其进行了结构表征并结合与 HgCl 2、CoCl 2或 ZnSiF 6形成三种配位聚合物((HgCl 2 ) 2 ( L )、(CoCl 2 ) 2 ( L ) 2 .CHCl 3和 Zn(SiF 6 )( L ) 2)。合成化合物的晶体结构表明形成了不同类型的配位模式,并通过C–H…π相互作用采用单(1D)或三维(3D)骨架。在 (CoCl 2 ) 2 ( L ) 2 中,Co(II) 与L 的结合形成金属大环,而在其他化合物中则表征了两个螺旋无限网络。化合物 (HgCl 2 ) 2 ( L ) 由两个具有相反手性(P和M)的螺旋链组成,Zn(SiF 6 )( L ) 2表现出螺旋管状组件L与两个 Zn(SiF 6 ) ∞柱相连。这项工作可能为进一步研究金属-有机配
Synthetic Approaches to Zigzag-Shaped Oligophenylene Strands Laterally Decorated with Hydroxy Functions
作者:Carine Diebold、David Michael Weekes、Maria Torres Navarrete、Pierre Mobian、Nathalie Kyritsakas、Marc Henry
DOI:10.1002/ejoc.201001058
日期:2010.12
Two nanosized zigzag-shapedoligophenylenestrands incorporating 2,2′-biphenol units were prepared by Suzuki–Miyaura coupling methodology. The two strands are made up of ten and seven phenyl rings, respectively. Two synthetic pathways were evaluated. The first involved the preparation of the target oligophenylene molecules by a sequential approach, whereas the second entailed the formation of the precursors
Conformational Dependence of Triplet Energies in Rotationally Hindered N‐ and S‐Heterocyclic Dimers: New Design and Measurement Rules for High Triplet Energy OLED Host Materials
作者:Iain A. Wright、Andrew Danos、Stephanie Montanaro、Andrei S. Batsanov、Andrew P. Monkman、Martin R. Bryce
DOI:10.1002/chem.202100036
日期:2021.4.12
bis(dibenzothiophene‐S,S‐dioxide) and a bis(thioxanthene‐S,S‐dioxide). Spectroscopic and electrochemical methods, supported by density functional theory, have given detailed insights into how para‐ vs. meta‐ vs. broken conjugation, and electron‐rich vs. electron‐poor heterocycles impact the HOMO–LUMO gap and singlet and triplet energies. Crucially for applications as OLED hosts, the triplet energy (ET) of
合成了一系列四种杂环二聚体,通过邻烷氧基链在中心连接键上施加扭曲的几何形状。这些包括两种异构联咔唑,一种双(二苯并噻吩-S , S-二氧化物)和一种双(噻吨-S , S-二氧化物)。在密度泛函理论的支持下,光谱和电化学方法对对位与间位与断裂共轭、富电子与贫电子杂环如何影响 HOMO-LUMO 能隙以及单线态和三线态能量给出了详细的见解。对于 OLED 主体应用来说至关重要的是,这些分子的三重态能量 ( E T ) 在稀释聚合物薄膜和纯薄膜之间存在显着差异,这与固态分子的构象需求有关。其中一种联咔唑物质在不同介质中表现出 0.24 eV 的E T变化,大到足以“成败” OLED 器件,并且在之前报道的其他 OLED 主体的纯薄膜和冷冻溶液测量之间也发现了类似的差异。通过对不同主体/掺杂剂组合的综合光学和光电研究,我们发现只有在纯薄膜中测量的较低E T值才能提供主体/客体兼容性的可靠指标。这项
A guest-induced reversible switching of a self-assembled H-bonded supramolecular framework
作者:Pierre Mobian、Clarisse Huguenard、Marc Henry
DOI:10.1039/c1cc13124a
日期:——
A new class of organic crystalline 2,2′-biphenol-based H-bonded material displaying 1D-channels encapsulating solvent molecules is described. A reversible guest-induced crystal-to-crystal conversion between the solvated H-bonded phase and a compact H-bonded non-solvated phase was observed. The energy competition between intramolecular H-bonds formation and solvation of organic pores has been characterized using PACHA calculations.
本研究描述了一类新型 2,2′-联苯酚基 H 键有机结晶材料,这种材料显示出封装溶剂分子的 1D 通道。在溶解的 H 键相和紧密的 H 键非溶解相之间,观察到一种由客体诱导的晶体间可逆转换。利用 PACHA 计算描述了分子内 H 键形成与有机孔隙溶解之间的能量竞争。