Synthesis of a Hexagonal Nanosized Macrocyclic Fluorophore with Integrated Endotopic Terpyridine Metal-Chelation Sites
作者:Paul N. W. Baxter
DOI:10.1002/chem.200304786
日期:2003.10.17
A rigid nanosized hexagonal phenylethynyl cyclophane 5 has been prepared, which incorporates two 2,2':6',2"-terpyridines as integral structuralunits, for the purpose of binding metal ions. Macrocycle 5 was obtained by a 14-step synthesis in an overall yield of 11 %, and was characterised by spectroscopic techniques. The efficiency and ease of all transformations, and the relatively enhanced yield
Convenient and Efficient Synthesis of Functionalized Oligopyridine Ligands Bearing Accessory Pyrromethene-BF<sub>2</sub> Fluorophores
作者:Gilles Ulrich、Raymond Ziessel
DOI:10.1021/jo035825g
日期:2004.3.1
2‘:6‘,2‘ ‘-terpyridine derivatives. Cross coupling of a bodipy-phenylethynyl molecule with the bromo-substituted partners takes place smoothly with the pyridine but with low yields in the other cases due to the efficient formation of the homocoupled diphenylbutadiyne bodipy compounds. A third convenient protocol enabled the preparation of these target molecules in a one-pot reaction where the deprotection
Synthesis of a Strained Acetylenic Macrocycle Incorporating a<i>para</i>-Oligo[2]cruciform Bridge Bent over Nanoscopic Dimensions: Structural, Electronic, Spectroscopic, and Ion-Sensing Properties
作者:Paul N. W. Baxter、Jean-Paul Gisselbrecht、Lydia Karmazin-Brelot、Alexandre Varnek、Lionel Allouche
DOI:10.1002/chem.201204569
日期:2013.9.9
diethyne cyclization preferentially yielded a structurally unusual macrocycle, comprising a strained conjugated oligo[2]cruciform wire, forced into a 2.2 nm bow‐shape by a terpyridine rein or tether, and stabilized towards light and heat by four insulating triisopropylsilylacetylene (TIPSA) substituents. Spectroscopic ion‐binding studies revealed the macrocycle to exhibit a particularly high UV/Vis selectivity
Eglinton-Galbraith二乙炔环化反应优先产生结构上异常的大环,包括应变的共轭寡聚[2]十字形线,被三联吡啶树脂或系链强迫成2.2 nm弓形,并通过四个绝缘的三异丙基甲硅烷基乙炔对光和热稳定( TIPSA)取代基。光谱离子结合研究表明,该大环化合物在稀溶液中对Pd II表现出特别高的UV / Vis选择性,并且其前体之一可提供对特定金属的多种发光猝灭和颜色响应,这暗示了有前途的离子传感器应用前景。在更集中的条件下,新的大环化合物能够结合特定的金属(例如Au I),尽管存在空间限制,但仍在其腔内。有趣的是,可变温度(VT)UV / Vis / 1 H NMR研究表明,TIPSA取代基的分子内运动受到限制,并且该化合物的光谱带隙随温度发生可逆变化。根据理论计算,VT UV / Vis观测结果与通过应变的oligo [2]十字形桥对电子共轭的热调制相一致,该桥与大环的构象异构体混合物
Highly Luminescent Probes from Terpyridine, Phenanthroline, and Pyrromethene·BF<sub>2</sub>Auxiliaries
作者:Raymond Ziessel、Gilles Ulrich
DOI:10.1055/s-2004-817741
日期:——
The synthesis of novel bodipy based fluorophores appended to pyridine (py), terpyridine (terpy), and phenanthroline (phen) cores has been performed using three different methods. The most effective and reliable method consists in cross coupling an iodo functionalized bodipy with ethynyl grafted oligopyridines. The cross coupling the other way around from an ethynyl functionalized bodipy is less effective due to a homocoupling reaction leading to the butadiyne bridged species. For the less stable alkynes, a one-pot protocol, under phase transfer conditions, using the trimethylsilyl-protected alkynes has been finalized. Compounds exhibit very strong absorption and emission properties in the visible.