Modulation of Self-Assembly and Enhanced Photocatalytic H2 Production by Porphyrin-Dipeptide Conjugates.

IF 6.6 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
ChemSusChem Pub Date : 2025-09-25 DOI:10.1002/cssc.202501251
Evitina Triantafyllou, Emmanouil Nikoloudakis, Sotiris Psilodimitrakopoulos, Dimitrios Kavalieros, Georgios Landrou, Emmanuel Stratakis, Georgios Charalambidis, Anna Mitraki, Athanassios G Coutsolelos
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引用次数: 0

Abstract

Herein, it is reported the visible-light-induced green hydrogen generation from self-assembled porphyrin-dipeptide hybrids. For the first time the self-assembly ability of a protected alanine-phenylalanine dipeptide is investigated via a simple protocol, which proved efficient in forming well-defined fibrillar architectures. These self-assembling properties are conveyed to peptide-porphyrin chromophores after their covalent conjugation. Interestingly, different architectures are observed depending on the solvent system, the solvent evaporation rate, the presence of metal in the porphyrin core, and the peripheral substitution of the porphyrin. Moving one step forward, it is explored the activity of the self-assembled nanostructures towards photocatalytic green H2 production from aqueous protons under visible-light irradiation. The distinct self-assembly behavior of the synthesized conjugates and their impact on photocatalytic hydrogen production is systematically explored in this study. Nonlinear second harmonic generation optical measurements are employed to define how the shape of the nanostructures is related to the H2 production efficiency. Notably, the tubular nanostructures presented the best catalytic performance, achieving a high H2 production activity of 32.7 mmol·g-1·h-1. Through detailed characterization and performance evaluation, it is aimed to uncover new insights into the design and optimization of peptide-porphyrin-based photocatalysts for sustainable energy applications.

卟啉-二肽缀合物对自组装和增强光催化制氢的调节作用。
本文报道了自组装卟啉-二肽杂合体在可见光诱导下产生绿色氢。首次通过简单的方法研究了受保护的丙氨酸-苯丙氨酸二肽的自组装能力,证明其在形成明确的纤维结构方面是有效的。这些自组装特性在共价偶联后传递给肽-卟啉发色团。有趣的是,根据溶剂体系、溶剂蒸发速率、卟啉核心中金属的存在以及卟啉的外围取代,可以观察到不同的结构。在此基础上,进一步探讨了自组装纳米结构在可见光照射下对水相质子光催化生成绿色H2的活性。本研究系统地探讨了合成的共轭物的独特自组装行为及其对光催化制氢的影响。采用非线性二次谐波产生光学测量来确定纳米结构的形状与氢气产生效率的关系。其中,管状纳米结构的催化性能最好,产氢活性高达32.7 mmol·g-1·h-1。通过详细的表征和性能评估,旨在为可持续能源应用的肽-卟啉基光催化剂的设计和优化提供新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ChemSusChem
ChemSusChem 化学-化学综合
CiteScore
15.80
自引率
4.80%
发文量
555
审稿时长
1.8 months
期刊介绍: ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology
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