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Improve the Crosslinking Reactivity of Nitrile: Design of Nitrile-Functionalized Pyrazine and its Hydrogen Bond-Assisted Nucleophilic Enhancement Study.
He, Xian; Wu, Hao; Chen, Menghao; Lv, Jiangbo; Xiao, Hang; Salas, Maria Nieves López; Wu, Baile; Liu, Pengqing; Zeng, Ke; Yang, Gang.
Afiliación
  • He X; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
  • Wu H; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
  • Chen M; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
  • Lv J; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
  • Xiao H; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
  • Salas MNL; Department Sustainable Materials Chemistry, Department of Chemistry, Paderborn University, Warburger Straße 100, D-33098, Paderborn, Germany.
  • Wu B; School of Sustainable Engineering and the Built Environment, Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, AZ, 85287, USA.
  • Liu P; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
  • Zeng K; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
  • Yang G; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, P. R. China.
Macromol Rapid Commun ; 44(18): e2300199, 2023 Sep.
Article en En | MEDLINE | ID: mdl-37247428
ABSTRACT
In this study, molecular engineering and biomimetic principles are utilized to prepare highly effective nitrile-functionalized pyrazine crosslinking units by exploiting pyrazine's unique nucleophilic strengthening mechanism and proton bonding ability. The curing behaviors of pyrazine-2,3-dicarbonitrile and phthalonitrile are investigated through model curing systems and molecular simulation. The results indicate that pyrazine-2,3-dicarbonitrile exhibits higher reactivity than phthalonitrile, promoted by amine. The cured products of pyrazine-2,3-dicarbonitrile predominantly comprise thermally stable azaisoindoline and azaphthalocyanine. This novel type of highly effective crosslinking unit, and the comprehended mechanism of action of pyrazine at the molecular level, significantly expand the application of pyrazine in materials science.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Pirazinas / Nitrilos Idioma: En Revista: Macromol Rapid Commun Año: 2023 Tipo del documento: Article
Texto completo
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Pirazinas / Nitrilos Idioma: En Revista: Macromol Rapid Commun Año: 2023 Tipo del documento: Article