Synthesis and Studies of Covalently Linked Porphyrin-Expanded Heteroporphyrin Dyads
作者:M. Rajeswara Rao、M. Ravikanth
DOI:10.1002/ejoc.201001482
日期:2011.3
porphyrin-smaragdyrin dyads under mild Pd°-coupling conditions. The dyads are freely soluble in common organic solvents and were characterized by various spectroscopic techniques. Photophysical studies indicated the possibility of energy transfer from the porphyrin/Zn II porphyrin sub-unit to the smaragdyrin sub-unit in porphyrin/Zn II porphyrin-smaragdyrin dyads. The potential of these dyads as fluorescent
使用适当的前体通过遵循 [3+2] 缩合方法合成了含有中间碘苯基官能团的单官能化核心修饰的蓝宝石(具有 N 2 S 3 核心)和 smaragdyrin(具有 N 4 O 核心)。在温和的 Pd° 偶联条件下,使用单官能化的 sapphyrin 和 smaragdyrin 构建单元合成了二苯基乙炔桥连的卟啉-sapphyrin 和卟啉/Zn II 卟啉-smaragdyrin 二元组的第一个实例。二元组可自由溶于常见的有机溶剂,并通过各种光谱技术进行表征。光物理研究表明能量从卟啉/Zn II 卟啉亚基转移到卟啉/Zn II 卟啉-smaragdyrin 二元组中的smaragdyrin 亚基的可能性。探索了这些二元组作为阴离子荧光传感器的潜力。
Aluminium(iii) porphyrin based axial-bonding type dyads containing thiaporphyrins and expanded thiaporphyrins as axial ligands
Four axial-bonding type Al(III) porphyrin based dyads, containing thiaporphyrins with N3S 1 and N2S22 cores and expanded thaiporphyrins with N2S33 and N2S44 cores, were synthesised by treating [(TPP)AlIIIOH] with the corresponding mono-functionalised meso-4-hydroxyphenyl thiaporphyrin or expanded thiaporphyrin building blocks in benzene at refluxing temperature. The stable dyads 1–4 are freely soluble
四个轴向接合型Al(III)卟啉基对,含有thiaporphyrins用N 3小号1和N 2小号2个2核和扩展thaiporphyrins用N 2小号3 3和N 2小号4 4个芯,分别通过处理[(合成(TPP)Al III OH]与相应的单官能化内消旋-4-羟苯基硫代卟啉或扩展的硫代卟啉结构单元苯在回流温度下。稳定的二元组1-4可自由溶于常见的有机溶剂,并具有质量,1D和2D NMR,吸收,电化学和荧光技术的特征。1D和2D NMR研究明确证实了二元组。吸收和电化学研究表明,二元组中的两个大环之间的相互作用较弱,而二元组中构成的大环大部分保留了其特征性的个体特征。稳态荧光研究表明,二元组1-4中Al(III)卟啉单元的量子产率降低,并引发了单重态-单重态能量从Al(III)卟啉单元转移到N 3 S卟啉单元的可能性。二元组1和dyad 2中的N 2 S 2卟啉单元。通过应用基于密度泛函理论(
Synthesis and Studies of Mono‐functionalized Telluradithiasapphyrins and Covalently Linked Porphyrin‐ Telluradithiasapphyrin Dyads
作者:Md Ashif Ali、Mangalampalli Ravikanth
DOI:10.1002/asia.202300338
日期:2023.7.3
First examples of covalentlylinked diphenyl ethyne bridged four novel 18π porphyrin/metalloporphrin-22π telluradithiasapphyrin dyads were synthesised by Pd(0) catalysed sonogashira coupling where quenching of fluorescence was observed due to possible energy/electron transfer from porphyrin/metalloporphyrin unit to non-emissive sapphyrin unit in dyads.