synthetic route was developed for the decomplexation of F-BODIPYs (fluorine-substituted boron–dipyrromethenes) to afford dipyrrins in high yields. This was achieved by treating the F-BODIPYs with different Lewisacids such as ZrCl4, TiCl4, AlCl3, Sc(OTf)3, or SnCl4 in CH3CN/CH3OH under refluxing conditions. This synthetic strategy was efficient for different types of F-BODIPYs such as meso-aryl-substituted
3-pyrrolylBODIPY dye (581/603 nm) through the installation of the morpholine group is applicable for lysosome-targeting imaging. Furthermore, an ethene-bridged 3,3′-dipyrrolylBODIPY dimer was constructed, which displayed a near-infrared (NIR) emission extended to 1200 nm with a large fluorescence brightness (2840 M–1 cm–1). The corresponding dimer nanoparticles (NPs) afforded a high photothermal conversion
通过直接缩合反应中各种芳香醛和吡咯的合理混合物,然后使用一锅策略进行原位连续氧化亲核取代,开发了一种有效合成 3-吡咯基BODIPY 染料的方法。这些不带封闭取代基的3-吡咯基BODIPY不仅表现出由柔性内消旋芳基取代基诱导的精细可调的光物理性质,而且还可以作为进一步选择性官能化的有价值的合成框架。作为这种潜力的证明,通过安装吗啉基团的一种 3-吡咯基BODIPY 染料(581/603 nm)适用于溶酶体靶向成像。此外,还构建了乙烯桥联的3,3'-二吡咯基BODIPY二聚体,其近红外(NIR)发射波长延伸至1200 nm,具有较大的荧光亮度(2840 M –1 cm –1 )。相应的二聚体纳米粒子(NPs)提供了72.5%的高光热转换效率(PCE)值,最终产生良好的光细胞毒性(IC 50 = 9.4 μM)并在808 nm激光照射下有效体外消灭HeLa细胞,凸显了其潜力NIR 窗口中光热治疗的应用。
Synthesis of pyrrolyldipyrrinato BF2 complexes by oxidative nucleophilic substitution of boron dipyrromethene with pyrrole
Direct oxidative nucleophilicsubstitution of the 3-hydrogen of BODIPY dyes by pyrrole has been developed under reflux condition under oxygen, from which a series of pyrrolyldipyrrinato BF(2) complexes 1a-h, as extended BODIPYs, have been synthesized. Most of these BODIPYs show strong fluorescence emissions at wavelengths over 600 nm in six solvents of different polarity. Removal of the BF(2) group
Synthesis, Structure and Properties of the First Examples of Hexacoordinate Sn
<sup>IV</sup>
Complexes of Pyrrolyldipyrrins
作者:Ritambhara Sharma、Mangalampalli Ravikanth
DOI:10.1002/ejic.201601179
日期:2017.1.26
by silica gel column chromatographic purification. The Sn(IV) complexes were characterized by HR-MS, 1D and 2D NMR spectroscopy and X-ray crystallography. The X-ray structure revealed that the two pyrrolyl dipyrrinligands were perpendicular to each other and the pyrrolyl dipyrrinligand forms five and six membered rings upon coordination with Sn(IV) ion. The Sn(IV) complexes absorbs strongly in the