Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Enhancing the Dispersibility and Stability of Graphene in Water Using Porphyrin-Based Compounds
Δημιουργός/Συγγραφέας:	Anagnostou, Katerina Sotiropoulos, Evangelos Tzoganakis, Nikolaos Polyzoidis, Christos Rogdakis, Konstantinos Katsari, Anna Achilleos, Katerina Triantafyllou, Evitina Landrou, Georgios Nikoloudakis, Emmanouil [EL] Χαραλαμπίδης, Γεώργιος[EN] Charalambidis, Georgios Coutsolelos, Athanassios G Kymakis, Emmanuel
Χορηγός :	European Innovation Council European Union
Ημερομηνία:	2025-03-10
Γλώσσα:	Αγγλικά
ISSN:	2366-9608 2366-9608
DOI:	10.1002/smtd.202401431
Άλλο:	40059618
Περίληψη:	Although graphene's superior electrical, optoelectronic, thermal, and mechanical properties have been evident for 20 years now, its poor water dispersibility has hindered its incorporation in many types of applications and technologies. Strong examples of this are biomedical and environmental applications and devices that require non-toxic, biocompatible media and not toxic organic solvents like N-N'-Dimethylformamide, in which graphene is readily dispersible. In this work, we investigate a new way to prepare high-concentration and stable graphene dispersions in water by employing porphyrin-based compounds as stabilisers. To this end, electrochemically exfoliated graphene (EEG) and assess the potential of five porphyrins and metalloporphyrins are prepared to disperse EEG in water successfully. The dispersibility and stability of EEG in each porphyrin aqueous solution are evaluated by recording their UV-vis absorption spectra. Two of the synthesised compounds, namely sodium salt of 5,10,15,20-tetrakis(4-carboxyphenyl)-porphyrin or TCPP and sodium salt of [5,10,15,20-tetrakis(4-carboxyphenyl)-porphyrinato]tin(IV) or Sn-TCPP , are successful in stably dispersing EEG in water. The intermolecular interaction between the EEG flakes and [H2TCPP]Na4 and [Sn(OH)2TCPP]Na4 molecules are investigated via fluorescence emission spectroscopy. Finally, solid thin films of the EEG(TCPP) and EEG(Sn-TCPP) dispersions are prepared via spray-coating, and their optoelectronic properties and surface morphology are investigated.
Τίτλος πηγής δημοσίευσης:	Small methods
Θεματική Κατηγορία:	[EL] Νανοτεχνολογία[EN] Nanotechnology [EL] Χημεία[EN] Chemistry
Λέξεις-Κλειδιά:	2D nanomaterials dispersibility dispersion stability electrochemically exfoliated graphene graphene metalloporphyrins porphyrins
EU Grant identifier:	101008701 TAEDR-0537347
Κάτοχος πνευματικών δικαιωμάτων:	© 2025 The Author(s). Small Methods published by Wiley‐VCH GmbH.
Όροι και προϋποθέσεις δικαιωμάτων:	This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1002/smtd.202401431
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο