It is of great significance to improve the photocatalytic performance of photosensitizers by supramolecular strategies. In this study, we constructed a supramolecular cascade assembly (PATT-CB[7]-SBE-β-CD) comprising an N,N,N′,N′-tetra(p-aminophenyl)-p-phenylenediamine derivative (PATT), cucurbit[7]uril (CB[7]), and sulfobutylether-β-cyclodextrin (SBE-β-CD). Compared to PATT, the supramolecular cascade assembly exhibits a remarkable 30-fold enhancement in fluorescence emission intensity. The excellent fluorescence emission of PATT-CB[7]-SBE-β-CD makes it an optimal energy donor to construct a light-harvesting system (LHS) with Eosin Y (EY) and sulforhodamine 101 (SR101) through a sequential two-step energy transfer process. The PATT-CB[7]-SBE-β-CD+EY+SR101 served as a photosensitizer to facilitate the photocatalytic oxidation of N-phenyltetrahydroisoquinoline and its derivatives. Compared to PATT-CB[7]-SBE-β-CD and PATT-CB[7]-SBE-β-CD+EY, PATT-CB[7]-SBE-β-CD+EY+SR101 exhibits significantly enhanced photocatalytic performance, which is achieved by enhancing the generation efficiency of the superoxide anion radical (O₂˙⁻) through sequential two-step energy transfer processes. The finding of this study demonstrated that the generation of O₂˙⁻ can be greatly enhanced through effective energy transfer to improve the photocatalytic performance.

中文翻译：

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具有两步顺序能量转移过程的超分子级联组件，可增强光催化性能

通过超分子策略提高光敏剂的光催化性能具有重要意义。在这项研究中，我们构建了一个超分子级联组装体（PATT-CB[7]-SBE-β-CD），包含N , N , N ', N '-四（对氨基苯基）-对苯二胺衍生物（PATT） 、葫芦[7]脲（CB[7]）和磺丁基醚-β-环糊精（SBE-β-CD）。与PATT相比，超分子级联组装体的荧光发射强度显着增强了30倍。 PATT-CB[7]-SBE-β-CD 优异的荧光发射使其成为与曙红 Y (EY) 和磺胺罗丹明 101 (SR101) 通过连续两步构建光捕获系统 (LHS) 的最佳能量供体。阶跃能量传递过程。 PATT-CB[7]-SBE-β-CD+EY+SR101作为光敏剂促进N-苯基四氢异喹啉及其衍生物的光催化氧化。与 PATT-CB[7]-SBE-β-CD 和 PATT-CB[7]-SBE-β-CD+EY 相比，PATT-CB[7]-SBE-β-CD+EY+SR101 表现出显着增强的光催化性能这是通过连续的两步能量转移过程提高超氧阴离子自由基（O ₂ ˙ ^- ）的生成效率来实现的。这项研究的发现表明，通过有效的能量转移可以大大增强O ₂ ˙ ^-的产生，从而提高光催化性能。