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 originale | Anglais |
|---|---|
| Pages (de - à) | 634-645 |
| Nombre de pages | 12 |
| journal | Nanoscale |
| Volume | 5 |
| Numéro de publication | 2 |
| Les DOIs | |
| état | Publié - 21 janv. 2013 |
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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 revue › Article
TY - JOUR
T1 - Azobenzene-based supramolecular polymers for processing MWCNTs
AU - Maggini, Laura
AU - Marangoni, Tomas
AU - Georges, Benoît
AU - Malicka, Joanna M.
AU - Yoosaf, K.
AU - Minoia, Andrea
AU - Lazzaroni, Roberto
AU - Armaroli, Nicola
AU - Bonifazi, Davide
PY - 2013/1/21
Y1 - 2013/1/21
N2 - 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
AB - 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
UR - http://www.scopus.com/inward/record.url?scp=84871744596&partnerID=8YFLogxK
U2 - 10.1039/c2nr33358a
DO - 10.1039/c2nr33358a
M3 - Article
C2 - 23223852
AN - SCOPUS:84871744596
VL - 5
SP - 634
EP - 645
JO - Nanoscale
JF - Nanoscale
SN - 2040-3364
IS - 2
ER -