Abstract
We describe a strategy for dispersing single walled nanotubes (SWNTs) in organic solvents using supramolecular coating with tailor-made, structurally adjustable tripodal porphyrin receptors. These have the ability to recognise SWNTs from DMF-toluene mixtures. HR TEM, TM AFM and SEM measurements showed that the hosts wrap around individual arc-made SWNTs, giving monodispersed composites in DMF which are stable for weeks. The dispersed composites were studied by Raman and fluorescence spectroscopies, including laser scanning confocal microscopy (for aggregates incorporated in cells). These porphyrin hosts encapsulate SWNTs based on π-π type interactions in an analogous manner to those observed by single crystal X-ray diffraction in their C 60 complexes. These interactions may be further reinforced by porphyrin-porphyrin stacking. Density functional theory (DFT) calculations predicted the structure of the SWNT: porphyrin host complex or composite formed and the binding energies of tripodal porphyrin hosts in composites with either C60 or SWNT as guests.
| Original language | English |
|---|---|
| Pages (from-to) | 2781-2788 |
| Number of pages | 8 |
| Journal | Journal of Materials Chemistry |
| Volume | 18 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 17 Jun 2008 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Chemistry(all)
- Materials Chemistry
Cite this
Interactions between tripodal porphyrin hosts and single walled carbon nanotubes : An experimental and theoretical (DFT) account. / Pascu, Sofia I.; Kuganathan, Navaratnarajah; Tong, Lok H.; Jacobs, Robert M.J.; Barnard, Peter J.; Chu, Brian T.; Huh, Yoon; Tobias, Gerard; Salzmann, Christoph G.; Sanders, Jeremy K.M.; Green, Malcolm L.H.; Green, Jennifer C.
In: Journal of Materials Chemistry, Vol. 18, No. 24, 17.06.2008, p. 2781-2788.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Interactions between tripodal porphyrin hosts and single walled carbon nanotubes
T2 - An experimental and theoretical (DFT) account
AU - Pascu, Sofia I.
AU - Kuganathan, Navaratnarajah
AU - Tong, Lok H.
AU - Jacobs, Robert M.J.
AU - Barnard, Peter J.
AU - Chu, Brian T.
AU - Huh, Yoon
AU - Tobias, Gerard
AU - Salzmann, Christoph G.
AU - Sanders, Jeremy K.M.
AU - Green, Malcolm L.H.
AU - Green, Jennifer C.
PY - 2008/6/17
Y1 - 2008/6/17
N2 - We describe a strategy for dispersing single walled nanotubes (SWNTs) in organic solvents using supramolecular coating with tailor-made, structurally adjustable tripodal porphyrin receptors. These have the ability to recognise SWNTs from DMF-toluene mixtures. HR TEM, TM AFM and SEM measurements showed that the hosts wrap around individual arc-made SWNTs, giving monodispersed composites in DMF which are stable for weeks. The dispersed composites were studied by Raman and fluorescence spectroscopies, including laser scanning confocal microscopy (for aggregates incorporated in cells). These porphyrin hosts encapsulate SWNTs based on π-π type interactions in an analogous manner to those observed by single crystal X-ray diffraction in their C 60 complexes. These interactions may be further reinforced by porphyrin-porphyrin stacking. Density functional theory (DFT) calculations predicted the structure of the SWNT: porphyrin host complex or composite formed and the binding energies of tripodal porphyrin hosts in composites with either C60 or SWNT as guests.
AB - We describe a strategy for dispersing single walled nanotubes (SWNTs) in organic solvents using supramolecular coating with tailor-made, structurally adjustable tripodal porphyrin receptors. These have the ability to recognise SWNTs from DMF-toluene mixtures. HR TEM, TM AFM and SEM measurements showed that the hosts wrap around individual arc-made SWNTs, giving monodispersed composites in DMF which are stable for weeks. The dispersed composites were studied by Raman and fluorescence spectroscopies, including laser scanning confocal microscopy (for aggregates incorporated in cells). These porphyrin hosts encapsulate SWNTs based on π-π type interactions in an analogous manner to those observed by single crystal X-ray diffraction in their C 60 complexes. These interactions may be further reinforced by porphyrin-porphyrin stacking. Density functional theory (DFT) calculations predicted the structure of the SWNT: porphyrin host complex or composite formed and the binding energies of tripodal porphyrin hosts in composites with either C60 or SWNT as guests.
UR - http://www.scopus.com/inward/record.url?scp=44949258884&partnerID=8YFLogxK
U2 - 10.1039/b719494c
DO - 10.1039/b719494c
M3 - Article
VL - 18
SP - 2781
EP - 2788
JO - Journal of Materials Chemistry
JF - Journal of Materials Chemistry
SN - 0959-9428
IS - 24
ER -