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Akacha R, Abdelhedi-Miladi I, Serghei A, Ben Romdhane H, Drockenmuller E. 1,3,4,5-Tetrasubstituted Poly(1,2,3-triazolium) Obtained through Metal-Free AA+BB Polyaddition of a Diazide and an Activated Internal Dialkyne. Macromol Rapid Commun 2024:e2300644. [PMID: 38350089 DOI: 10.1002/marc.202300644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/08/2024] [Indexed: 02/15/2024]
Abstract
A tetra(ethylene glycol)-based 1,3,4,5-tetrasubstituted poly(1,2,3-triazolium) is synthesized in two steps including: i) the catalyst-free polyaddition of a diazide and an activated internal dialkyne and ii) the N-alkylation of the resulting 1,2,3-triazole groups. In order to provide detailed structure/properties correlations different analogs are also synthesized. First, parent poly(1,2,3-triazole)s are obtained via AA+BB polyaddition using copper(I)-catalyzed alkyne-azide cycloaddition or metal-free thermal alkyne-azide cycloaddition (TAAC). Poly(1,2,3-triazole)s with higher molar masses are obtained in higher yields by TAAC polyaddition. A 1,3,4-trisubstituted poly(1,2,3-triazolium) structural analog obtained by TAAC polyaddition using a terminal activated dialkyne and subsequent N-alkylation of the 1,2,3-triazole groups enables discussing the influence of the methyl group in the C-4 or C-5 position on thermal and ion conducting properties. Obtained polymers are characterized by 1 H, 13 C, and 19 F NMR spectroscopy, differential scanning calorimetry, thermogravimetric analysis, size exclusion chromatography, and broadband dielectric spectroscopy. The targeted 1,3,4,5-tetrasubstituted poly(1,2,3-triazolium) exhibits a glass transition temperature of -23 °C and a direct current ionic conductivity of 2.0 × 10-6 S cm-1 at 30 °C under anhydrous conditions. The developed strategy offers opportunities to further tune the electron delocalization of the 1,2,3-triazolium cation and the properties of poly(1,2,3-triazolium)s using this additional substituent as structural handle.
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Affiliation(s)
- Rania Akacha
- Laboratoire de Chimie (Bio) Organique Structurale et de Polymères, Synthèse et Études Physicochimiques (LR99ES14), Université de Tunis El Manar, Faculté des Sciences de Tunis, El Manar, 2092, Tunisia
- Université Claude Bernard Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, Lyon, F-69003, France
| | - Imen Abdelhedi-Miladi
- Laboratoire de Chimie (Bio) Organique Structurale et de Polymères, Synthèse et Études Physicochimiques (LR99ES14), Université de Tunis El Manar, Faculté des Sciences de Tunis, El Manar, 2092, Tunisia
| | - Anatoli Serghei
- Université Claude Bernard Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, Lyon, F-69003, France
| | - Hatem Ben Romdhane
- Laboratoire de Chimie (Bio) Organique Structurale et de Polymères, Synthèse et Études Physicochimiques (LR99ES14), Université de Tunis El Manar, Faculté des Sciences de Tunis, El Manar, 2092, Tunisia
| | - Eric Drockenmuller
- Université Claude Bernard Lyon 1, CNRS, Ingénierie des Matériaux Polymères, UMR 5223, Lyon, F-69003, France
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