Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Palladium(II) acetate, is researched, Molecular C4H6O4Pd, CAS is 3375-31-3, about Organic-Inorganic Polyureas with POSS Cages in the Main Chains via Polycondensation of Diamines with Carbon Dioxide.Electric Literature of C4H6O4Pd.
Linear organic-inorganic polyureas (PUreas) with polyhedral oligomeric silsesquioxane (POSS) cages in the main chains were synthesized via polycondensation of diamines with carbon dioxide (CO2). First, 3,13-dianilino double decker silsesquioxane (denoted 3,13-dianilino DDSQ) was synthesized. An α,ω-diamino-terminated poly(propylene oxide) as well as the POSS diamine was exploited for polycondensation with CO2; PUrea and PUrea-DDSQ with sufficiently high mol. weights were obtained with various contents of POSS. The morphol. investigation shows that the linear PUreas with POSS cages in the main chains were microphase-separated; the POSS cages were aggregated into spherical microdomains with the size of 50-120 nm in diameter Owing to the introduction of POSS cages, PUrea was transformed from a viscous liquid into elastic solids in the ranges of composition investigated. At room temperature, linear organic-inorganic PUreas behaved as cross-linked elastomers. This behavior is ascribed to the generation of phys. crosslinking with POSS microdomains as the crosslinking sites. In addition, the organic-inorganic PUreas displayed self-healing properties via the dynamic exchange of multiple hydrogen bonds. It was found that the self-healing properties were significantly affected by the content of 3,13-dianilino DDSQ.
《Organic-Inorganic Polyureas with POSS Cages in the Main Chains via Polycondensation of Diamines with Carbon Dioxide》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(Palladium(II) acetate)Electric Literature of C4H6O4Pd.