Duan, Jiang published the artcileDisilyl Bis(Secondary Amine)-Enabled Epoxy Ring-Opening and Silylotropic N → O Migration Leading to Low Dielectric Epoxy Copolymers, HPLC of Formula: 1761-71-3, the publication is Macromolecules (Washington, DC, United States) (2021), 54(14), 6947-6955, database is CAplus.
This work presents a strategy for fabricating low dielec. epoxy copolymers through copolymerizing bisphenol A diglycidyl ether with N,N’-disilyl bis(secondary amine)s, a series of difunctional silylamines synthesized by silylation of bis(secondary amine)s. A study on the model reaction of monoepoxy with monofunctional silylamines identified that the reaction proceeded smoothly in THF with Mg(ClO4)2 catalysis and mechanistically through sequential silylamine-induced epoxy ring-opening and silylotropic N → O migration, a process with favorable Gibbs free energy changes as confirmed by d. functional theory calculations The copolymers demonstrated remarkably low dielec. constants and dielec. losses due to the formation of the low-polarizable silyloxyl instead of the hydroxyl group in polymerization and the enlarged mol. free volume In addition, the copolymers showed desirable toughness, hydrophobicity, and thermal stability. As a tool to achieve these desirable features, the strategy developed in this work may find promising application in designing low dielec. epoxy resin materials for use in the microelectronic field.
Macromolecules (Washington, DC, United States) published new progress about 1761-71-3. 1761-71-3 belongs to quinuclidine, auxiliary class Ploymers, name is 4,4-Diaminodicyclohexyl methane, and the molecular formula is C13H26N2, HPLC of Formula: 1761-71-3.
Referemce:
https://en.wikipedia.org/wiki/Quinuclidine,
Quinuclidine | C7H13N | ChemSpider