Tristriazolotriazines (TTTs) with a threefold alkoxyphenyl substitution were prepared and studied by DSC, polarized optical microscopy (POM) and X-ray scattering. Six pentyloxy chains are sufficient to induce liquid-crystalline behavior in these star-shaped compounds. Thermotropicproperties of TTTs with varying substitution patterns and a periphery of linear chains of different lengths, branching
generations of supramolecular fractals (G1-G5) based on the coordination-driven self-assembly of terpyridine ligands. All the ligands were synthesized from triphenylamine motif, which played a central role in geometry control. Different approaches based on direct Sonogashira coupling and/or ⟨tpy-Ru(II)-tpy⟩ connectivity were employed to prepare complex Ru(II)-organic buildingblocks. Fractals G1-G5
In this study, we overcame a challenge in conventional self-assembly of macrocycles that uses ditopic 2,2':6',2″-terpyridine (tpy) building blocks with a 120° angle between two ligating moieties, which generally produces a mixture of multiple macrocycles instead of a single hexagon. Two supramolecular hexagon wreaths, [Zn9LA6] and [Zn12LB6], were designed and self-assembled from tritopic and tetratopic
Assembling Pentatopic Terpyridine Ligands with Three Types of Coordination Moieties into a Giant Supramolecular Hexagonal Prism: Synthesis, Self-Assembly, Characterization, and Antimicrobial Study
types of coordination moieties to assemble two giant supramolecular hexagonal prisms with molecular weight up to 42,608 and 43,569 Da, respectively. Within the prisms, two double-rimmed Kandinsky Circles serve as the base surfaces as well as the templates for assisting the precise self-sorting during the self-assembly. Additionally, hierarchical self-assembly of these supramolecular prisms into tubular-like
具有巨大空腔的三维 (3D) 超分子由于其广泛的应用而具有吸引力。在此,我们使用具有三种配位部分的五位三联吡啶配体组装了两个分子量分别高达 42,608 和 43,569 Da 的巨型超分子六棱柱。在棱镜内,两个双边康定斯基圆作为基面和模板,用于协助自组装过程中的精确自分类。此外,通过扫描隧道显微镜 (STM) 和小角 X 射线散射 (SAXS) 发现并充分研究了这些超分子棱镜分层自组装成管状纳米结构。最后,
Synthesis and Characterization of New Red-Emitting Polyfluorene Derivatives Containing Electron-Deficient 2-Pyran-4-ylidene−Malononitrile Moieties
作者:Qiang Peng、Zhi-Yun Lu、Yan Huang、Ming-Gui Xie、Shao-Hu Han、Jun-Biao Peng、Yong Cao
DOI:10.1021/ma0355397
日期:2004.1.1
A novel series of red-light-emitting copolymers derived from fluorene and 2-pyran-4-ylidene−malononitrile (PM) have been synthesized through a palladium-catalyzed Suzuki coupling reaction. The polymers were characterized by FT-IR, NMR, and elemental analysis. All these polymers are completely soluble in common organic solvents, such as THF, CH2Cl2, CHCl3, and toluene, and they have good thermal stability