Free-Standing Supramolecular Pyridine N-Oxide-Silver(I) Metallogels

© 2025 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.

Détails bibliographiques
Publié dans:Advanced materials (Deerfield Beach, Fla.). - 1998. - 37(2025), 37 vom: 01. Sept., Seite e2502818
Auteur principal: Puttreddy, Rakesh (Auteur)
Autres auteurs: Thongrom, Boonya, Rautiainen, J Mikko, Lahtinen, Manu, Kukkonen, Esa, Haag, Rainer, Moilanen, Jani O, Lundell, Jan, Rissanen, Kari
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Advanced materials (Deerfield Beach, Fla.)
Sujets:Journal Article N‐oxide metallogels shaping silver(I) structuring
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520 |a Twenty-seven pyridine N-oxides (PyNOs) are investigated to evaluate the gelation of their silver(I) trifluoroacetate (AgTFA) complexes across eight solvents. Gelation occurs selectively with PyNOs featuring electron-donating groups, while those with electron-withdrawing or mixed groups do not form gels. A combination of two different PyNOs, one with an electron-donating group and the second with an electron-withdrawing group, form a gel, suggesting that gel-forming PyNO-AgTFA can override the non-gelling tendency of PyNOs comprising electron-withdrawing groups. Pyridine-AgTFA complexes lacking the N-O group fail to gel, underscoring the crucial role of the N-O functionality and its coordination with silver(I) in facilitating gelation. The resulting PyNO-AgTFA gels demonstrate remarkable mechanical strengths, enabling the fabrication of free-standing and load-bearing gel shapes, such as rods and horseshoes, with sizes up to several centimeters. The analysis of 65 X-ray crystal structures reveals that PyNO-AgTFA complexes manifest four distinct structural motifs, even when crystallized under different solvents and ligand-to-metal ratios, demonstrating a strong preference for a specific set of silver(I) complexes. X-ray crystallography and powder X-ray diffraction studies predict gel structures without single crystals. Density functional theory calculations of recurring non-covalent interactions in the crystal structures show interaction energies ranging from -1 to -92 kJ mol-1 
650 4 |a Journal Article 
650 4 |a N‐oxide 
650 4 |a metallogels 
650 4 |a shaping 
650 4 |a silver(I) 
650 4 |a structuring 
700 1 |a Thongrom, Boonya  |e verfasserin  |4 aut 
700 1 |a Rautiainen, J Mikko  |e verfasserin  |4 aut 
700 1 |a Lahtinen, Manu  |e verfasserin  |4 aut 
700 1 |a Kukkonen, Esa  |e verfasserin  |4 aut 
700 1 |a Haag, Rainer  |e verfasserin  |4 aut 
700 1 |a Moilanen, Jani O  |e verfasserin  |4 aut 
700 1 |a Lundell, Jan  |e verfasserin  |4 aut 
700 1 |a Rissanen, Kari  |e verfasserin  |4 aut 
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773 1 8 |g volume:37  |g year:2025  |g number:37  |g day:01  |g month:09  |g pages:e2502818 
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