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Straightforward preparation of highly loaded MWCNT–polyamine hybrids and their application in catalysis

  • Multiwalled carbon nanotubes (MWCNTs) were easily and efficiently functionalised with highly cross-linked polyamines. The radical polymerisation of two bis-vinylimidazolium salts in the presence of pristine MWCNTs and azobisisobutyronitrile (AIBN) as a radical initiator led to the formation of materials with a high functionalisation degree. The subsequent treatment with sodium borohydride gave rise to the reduction of imidazolium moieties with the concomitant formation of secondary and tertiary amino groups. The obtained materials were characterised by thermogravimetric analysis (TGA), elemental analysis, solid state 13C-NMR, Fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), potentiometric titration, and temperature programmed desorption of carbon dioxide (CO2-TPD). One of the prepared materials was tested as a heterogeneous base catalyst in C–C bond forming reactions such as the Knoevenagel condensation and Henry reaction. Furthermore, two examples concerning a sequential one-pot approach involving two consecutive reactions, namely Knoevenagel and Michael reactions, were reported.

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Document Type:Article
Author:Vincenzo Campisciano, René Burger, Carla Calabrese, Leonarda Francesca Liotta, Paolo Lo Meo, Michelangelo Gruttadauria, Francesco Giacalone
Parent Title (English):Nanoscale Advances
Number of pages:13
First Page:4199
Last Page:4211
Publisher:Royal Society of Chemistry
Place of publication:Cambridge
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2020/07/14
Copyright:This journal is © The Royal Society of Chemistry 2020. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Funding:The authors gratefully acknowledge the University of Palermo and the Italian Ministry of Education, University and Research (MIUR) for financial support through PRIN 2017 (project no. 2017W8KNZW).
Departments, institutes and facilities:Fachbereich Angewandte Naturwissenschaften
Dewey Decimal Classification (DDC):5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften
5 Naturwissenschaften und Mathematik / 54 Chemie / 546 Anorganische Chemie
Entry in this database:2020/10/21
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 3.0