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Erschienen in: Journal of Nanoparticle Research 7/2019

01.07.2019 | Research Paper

Carbon nanotubes grafted with sulfonated polyacrylamide as a heterogeneous catalyst for the preparation of bis(indolyl)methanes

verfasst von: Kaveh Parvanak Boroujeni, Fatemeh Asadi, Reyhaneh Kazemi, Abdulhamid Fadavi

Erschienen in: Journal of Nanoparticle Research | Ausgabe 7/2019

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Abstract

Multiwalled carbon nanotubes (MWCNTs) were grafted with poly(AMPS–co–AM) by free-radical polymerization of acrylamide (AM) and 2–acrylamido–2-methylpropane sulfonic acid (AMPS) monomers initiated by benzoyl peroxide (BPO). MWCNT–poly(AMPS–co–AM) was characterized by Fourier transform–infrared spectroscopy (FT–IR), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive spectroscopy (EDS). Observation showed that grafting of poly(AMPS–co–AM) to MWCNTs improves solubility of MWCNTs in water, ethanol, and dichloromethane. MWCNT–poly(AMPS–co–AM) also showed good catalytic performance for the preparation of bis(indolyl)methanes and 1,8-dioxo-octahydroxanthenes through the condensation of an aldehyde with indole and 5,5-dimethyl-1,3-cycloheanedione (dimedone), respectively. MWCNT–poly(AMPS–co–AM) catalyst can be reusable for at least up to eight times without significant loss of activity.

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Metadaten
Titel
Carbon nanotubes grafted with sulfonated polyacrylamide as a heterogeneous catalyst for the preparation of bis(indolyl)methanes
verfasst von
Kaveh Parvanak Boroujeni
Fatemeh Asadi
Reyhaneh Kazemi
Abdulhamid Fadavi
Publikationsdatum
01.07.2019
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 7/2019
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-019-4543-0

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