Excited state interactions of zeolite adsorbed porphyrins have been investigated by steady state luminescence quenching technique with certain antioxidants such as reduced glutathione, ascorbic acid and L-cysteine. The zeolite supported porphyrins, meso-tetra (N-methyl-4-pyridyl) porphyrin (H₂TMPyP⁴⁺) and zinc tetra(N-methyl-4-pyridyl) porphyrin (ZnTMPyP⁴⁺) were prepared and characterized by various techniques such as Diffuse Reflectance Spectra (DRS), Scanning Electron Microscope (SEM), powder X-Ray Diffraction (XRD) and BET surface area. The interaction of zeolites with porphyrins are shown to increase the lifetime of the singlet excited state of porphyrins and decays are biphasic in nature. The splitting of the emission band of porphyrins occurs in 1:1 glycerol: water solution due to the changes in the dielectric of the solvation sphere associated with porphyrin. The Stern-Volmer plots of I₀/I vs quencher concentration [Q] were linear in the whole range of [Q] used. These studies revealed the effective quenching for zinc porphyrin compared to free base porphyrin. The effect of quenchers and zeolite acidity has also been studied and the quenching rate constant (k_q) is found in the order of 10⁹ M⁻¹ s⁻¹. The quenching reaction obeys Rehm-Weller Equation and is shown to be due to thermodynamically favoured electron transfer from quenchers to the excited singlet state of porphyrins (reductive quenching).

沸石吸附卟啉的激发态相互作用已通过稳态发光淬灭技术与某些抗氧化剂（如还原型谷胱甘肽、抗坏血酸和L-半胱氨酸）进行了研究。沸石负载的卟啉、内消旋四（N-甲基-4-吡啶基）卟啉（H ₂ TMPyP ⁴⁺）和四（N-甲基-4-吡啶基）锌卟啉（ZnTMPyP ⁴⁺) 通过各种技术制备和表征，例如漫反射光谱 (DRS)、扫描电子显微镜 (SEM)、粉末 X 射线衍射 (XRD) 和 BET 表面积。沸石与卟啉的相互作用被证明可以延长卟啉单重激发态的寿命，并且衰变本质上是双相的。由于与卟啉相关的溶剂化球体介电常数的变化，卟啉发射带的分裂发生在 1:1 甘油：水溶液中。I ₀的 Stern-Volmer 图/I 与猝灭剂浓度 [Q] 在所用 [Q] 的整个范围内呈线性关系。这些研究揭示了与游离碱卟啉相比锌卟啉的有效淬灭。还研究了猝灭剂和沸石酸度的影响，发现猝灭速率常数 ( k _q )约为 10 ⁹  M ^-1  s ^-1。猝灭反应遵循 Rehm-Weller 方程，并且表明是由于热力学上有利的电子从猝灭剂转移到卟啉的激发单线态（还原猝灭）。