Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Modulation of Self-Assembly and Enhanced Photocatalytic H2 Production by Porphyrin-Dipeptide Conjugates
Δημιουργός/Συγγραφέας:	Triantafyllou, Evitina Nikoloudakis, Emmanouil Psilodimitrakopoulos, Sotiris Kavalieros, Dimitrios Landrou, Georgios Stratakis, Emmanuel [EL] Χαραλαμπίδης, Γεώργιος[EN] Charalambidis, Georgios Mitraki, Anna Coutsolelos, Athanassios G
Ημερομηνία:	2025-09-25
Γλώσσα:	Αγγλικά
ISSN:	1864-5631 1864-564X
DOI:	10.1002/cssc.202501251
Άλλο:	40995866
Περίληψη:	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.
Τίτλος πηγής δημοσίευσης:	ChemSusChem
Θεματική Κατηγορία:	[EL] Οργανική χημεία[EN] Organic chemistry [EL] Φωτοχημεία[EN] Photochemistry [EL] Χημεία[EN] Chemistry
Λέξεις-Κλειδιά:	hydrogen evolution reaction hydrogen production peptides photocatalysis porphyrins self‐assembly
Χρηματοδότης:	European Commission
Χρηματοδοτικό πρόγραμμα:	Horizon Europe Research Programme
Αναγνωριστικό χρηματοδοτικού προγράμματος:	101120397
Κάτοχος πνευματικών δικαιωμάτων:	© 2025 The Author(s). ChemSusChem published by Wiley-VCH GmbH
Όροι και προϋποθέσεις δικαιωμάτων:	This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1002/cssc.202501251
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο