Organoclays with carbosilane dendrimers containing ammonium or phosphonium groups

Organoclays with carbosilane dendrimers containing ammonium or phosphonium groups

Článek WoS

New composite materials could reveal attractive capabilities and favourable properties. Herein, we present novel layered nanocomposites consisting of inorganic clay (montmorillonite) and cationic carbosilane dendrimers. A comparative study was performed to evaluate cationic moieties (ammonium or phosphonium) and various generations of dendrimers (first, second and third) and their influence on the characteristics of resulting materials. The target nanocomposites were characterized by XRD, TEM, TGA, IR and MAS NMR. Interestingly, with multivalent dendritic cations, as opposed to monovalent cations, we detected a new connection of cationic species to the inorganic matrix by both ammonium and phosphonium dendrimers. To evaluate the mechanism of thermal degradation of the prepared materials, non-oxidative pyrolysis coupled with analysis of the resulting products by IR and MS was performed. To illustrate the catalytic activity of the as-prepared materials, selected samples were tested as catalysts in the cycloaddition of CO2 with epoxide (allyl glycidyl ether).

New composite materials could reveal attractive capabilities and favourable properties. Herein, we present novel layered nanocomposites consisting of inorganic clay (montmorillonite) and cationic carbosilane dendrimers. A comparative study was performed to evaluate cationic moieties (ammonium or phosphonium) and various generations of dendrimers (first, second and third) and their influence on the characteristics of resulting materials. The target nanocomposites were characterized by XRD, TEM, TGA, IR and MAS NMR. Interestingly, with multivalent dendritic cations, as opposed to monovalent cations, we detected a new connection of cationic species to the inorganic matrix by both ammonium and phosphonium dendrimers. To evaluate the mechanism of thermal degradation of the prepared materials, non-oxidative pyrolysis coupled with analysis of the resulting products by IR and MS was performed. To illustrate the catalytic activity of the as-prepared materials, selected samples were tested as catalysts in the cycloaddition of CO2 with epoxide (allyl glycidyl ether).

ammonia, carbon dioxide, carbosilane cation dendrimer epoxide, monovalent cation, montmorillonite, nanocomposite, phosphonium derivative, silane derivative unclassified drug

ammonia, carbon dioxide, carbosilane cation dendrimer epoxide, monovalent cation, montmorillonite, nanocomposite, phosphonium derivative, silane derivative unclassified drug

Monika Müllerová, Stanislav Šabata, Jindřich Matoušek, Martin Kormunda, Jana Holubová, Radka Bálková, Roman Petričkovič, Martin Koštejn, Jaroslav Kupčík, Radek Fajgara, Tomáš Strašák

2019

21.01.2018

Royal Society of Chemistry

1144-0546

NEW JOURNAL OF CHEMISTRY

42

2

Spojené království Velké Británie a Severního Irska

1187

1196

10

https://pubs.rsc.org/en/content/articlelanding/2018/NJ/C7NJ03979D#!divAbstract