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|a 10.1002/adma.202502818
|2 doi
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|a pubmed25n1576.xml
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|a (NLM)40590158
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|a eng
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|a Puttreddy, Rakesh
|e verfasserin
|4 aut
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|a Free-Standing Supramolecular Pyridine N-Oxide-Silver(I) Metallogels
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|c 2025
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 21.09.2025
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2025 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
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|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
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|a Journal Article
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|a N‐oxide
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|a metallogels
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|a shaping
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|a silver(I)
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4 |
|a structuring
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|a Thongrom, Boonya
|e verfasserin
|4 aut
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| 700 |
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|a Rautiainen, J Mikko
|e verfasserin
|4 aut
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|a Lahtinen, Manu
|e verfasserin
|4 aut
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|a Kukkonen, Esa
|e verfasserin
|4 aut
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| 700 |
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|a Haag, Rainer
|e verfasserin
|4 aut
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| 700 |
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|a Moilanen, Jani O
|e verfasserin
|4 aut
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| 700 |
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|a Lundell, Jan
|e verfasserin
|4 aut
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| 700 |
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|a Rissanen, Kari
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 37(2025), 37 vom: 01. Sept., Seite e2502818
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:37
|g year:2025
|g number:37
|g day:01
|g month:09
|g pages:e2502818
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|u http://dx.doi.org/10.1002/adma.202502818
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