An amphiphilic cationic tripyridiniumylporphyrin monomer, i.e., ZnTrMPyP, was synthesized and copolymerized with acrylamide in water and dimethyl sulfoxide, respectively, to prepare the water-soluble random copolymer P-D and microblock copolymer P-W. The association behavior and fluorescence quenching between the copolymers and tetra(p-sulfonato phenyl)porphyrin (Fe(III)TSPP(Cl)) were studied via absorption and emission spectra. The results showed that relatively discrete pendant groups of ZnTrMPyP within P-D could form a ground state complex with FeTSPP by electrostatic interactions, and both static and dynamic mechanisms were active in this quenching process. In contrast, the microblock porphyrin pendant groups within P-W interacted with FeTSPP as an entity, and static quenching was dominant in this process. Salt effects on the formation of the copolymers and FeTSPP complex were also investigated through the addition of KNO 3 , and the results showed that this association can be weakened by the electrostatic shielding effect, and the fluorescence quenching constant could be reduced.

中文翻译：

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水溶性聚合物上阳离子锌卟啉侧基与阴离子铁卟啉客体的缔合行为和荧光猝灭

合成了两亲性阳离子三吡啶鎓卟啉单体ZnTrMPyP，分别与丙烯酰胺在水中和二甲亚砜共聚，制备水溶性无规共聚物PD和微嵌段共聚物PW。通过吸收和发射光谱研究了共聚物和四（对磺基苯基）卟啉（Fe（III）TSPP（Cl））之间的缔合行为和荧光猝灭。结果表明，PD内相对离散的ZnTrMPyP侧基可以通过静电相互作用与FeTSPP形成基态复合物，并且静态和动态机制在该猝灭过程中都很活跃。相比之下，PW 中的微块卟啉侧基与 FeTSPP 作为一个整体相互作用，在这个过程中静态猝灭占主导地位。