Azobenzene-based supramolecular polymers for processing MWCNTs

Laura Maggini, Tomas Marangoni, Benoît Georges, Joanna M. Malicka, K. Yoosaf, Andrea Minoia, Roberto Lazzaroni, Nicola Armaroli, Davide Bonifazi

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Photothermally responsive supramolecular polymers containing azobenzene units have been synthesised and employed as dispersants for multi-walled carbon nanotubes (MWCNTs) in organic solvents. Upon triggering the trans-cis isomerisation of the supramolecular polymer intermolecular interactions between MWCNTs and the polymer are established, reversibly affecting the suspensions of the MWCNTs, either favouring it (by heating, i.e. cis → trans isomerisation) or inducing the CNTs' precipitation (upon irradiation, trans → cis isomerisation). Taking advantage of the chromophoric properties of the molecular subunits, the solubilisation/precipitation processes have been monitored by UV-Vis absorption spectroscopy. The structural properties of the resulting MWCNT-polymer hybrid materials have been thoroughly investigated via thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and atomic force microscopy (AFM) and modelled with molecular dynamics simulations. This journal is

langue originaleAnglais
Pages (de - à)634-645
Nombre de pages12
journalNanoscale
Volume5
Numéro de publication2
Les DOIs
étatPublié - 21 janv. 2013

Empreinte digitale

Carbon Nanotubes
Azobenzene
Carbon nanotubes
Polymers
Isomerization
Processing
Hybrid materials
Ultraviolet spectroscopy
Absorption spectroscopy
Organic solvents
Thermogravimetric analysis
Molecular dynamics
Structural properties
Atomic force microscopy
Suspensions
X ray photoelectron spectroscopy
Irradiation
Transmission electron microscopy
Heating
azobenzene

Citer ceci

Maggini, Laura ; Marangoni, Tomas ; Georges, Benoît ; Malicka, Joanna M. ; Yoosaf, K. ; Minoia, Andrea ; Lazzaroni, Roberto ; Armaroli, Nicola ; Bonifazi, Davide. / Azobenzene-based supramolecular polymers for processing MWCNTs. Dans: Nanoscale. 2013 ; Vol 5, Numéro 2. p. 634-645.
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abstract = "Photothermally responsive supramolecular polymers containing azobenzene units have been synthesised and employed as dispersants for multi-walled carbon nanotubes (MWCNTs) in organic solvents. Upon triggering the trans-cis isomerisation of the supramolecular polymer intermolecular interactions between MWCNTs and the polymer are established, reversibly affecting the suspensions of the MWCNTs, either favouring it (by heating, i.e. cis → trans isomerisation) or inducing the CNTs' precipitation (upon irradiation, trans → cis isomerisation). Taking advantage of the chromophoric properties of the molecular subunits, the solubilisation/precipitation processes have been monitored by UV-Vis absorption spectroscopy. The structural properties of the resulting MWCNT-polymer hybrid materials have been thoroughly investigated via thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and atomic force microscopy (AFM) and modelled with molecular dynamics simulations. This journal is",
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Maggini, L, Marangoni, T, Georges, B, Malicka, JM, Yoosaf, K, Minoia, A, Lazzaroni, R, Armaroli, N & Bonifazi, D 2013, 'Azobenzene-based supramolecular polymers for processing MWCNTs', Nanoscale, VOL. 5, Numéro 2, p. 634-645. https://doi.org/10.1039/c2nr33358a

Azobenzene-based supramolecular polymers for processing MWCNTs. / Maggini, Laura; Marangoni, Tomas; Georges, Benoît; Malicka, Joanna M.; Yoosaf, K.; Minoia, Andrea; Lazzaroni, Roberto; Armaroli, Nicola; Bonifazi, Davide.

Dans: Nanoscale, Vol 5, Numéro 2, 21.01.2013, p. 634-645.

Résultats de recherche: Contribution à un journal/une revueArticle

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AU - Minoia, Andrea

AU - Lazzaroni, Roberto

AU - Armaroli, Nicola

AU - Bonifazi, Davide

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