Synthesis of functionalized core-modified sapphyrins and covalently linked porphyrin–sapphyrin dyads
作者:Rajeswara Rao Malakalapalli、Ravikanth Mangalampalli
DOI:10.1016/j.tet.2011.11.030
日期:2012.1
synthesize three covalently linked diphenyl ethyne bridged porphyrin–thiasapphyrin dyads. The porphyrin–thiasapphyrin dyads were characterized by mass, NMR, absorption, electrochemical and fluorescence techniques. The NMR, absorption and electrochemical studies indicated that the two components in dyads interact weakly and retain their individual identities. The steady state fluorescence studies indicated
我们通过简单的合成策略含有官能化芳基中的合成单官能化thiasapphyrins内消旋在噻吩侧位上。含有碘苯基官能团的硫杂卟啉结构单元与具有N 4,N 3 S和N 2 S 2核心的含有内消旋的三种不同的卟啉结构单元耦合-乙炔基苯基官能团在温和的Pd(0)偶联条件下可合成三个共价连接的二苯基乙炔桥联的卟啉-噻菌红蛋白二联体。通过质量,NMR,吸收,电化学和荧光技术对卟啉-硫杂卟啉二联体进行了表征。NMR,吸收和电化学研究表明,二元组中的两个组分相互作用较弱,并保留其各自的身份。稳态荧光研究表明,由于能量和/或电子转移至噻唑卟啉单元,卟啉荧光显着降低。质子化研究表明,N 4卟啉单元更碱性,而N 3 S和N 2 S 2在相应的二联体中,卟啉单元的碱性比硫皂苷单元的碱性低。我们探究了二元组作为荧光阴离子传感器的潜力,并显示出三分之二的二元组可以用作荧光阴离子传感器。