Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 22, Issue 15, Pages 3209-3222Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201102632
Keywords
carbon nanotubes; carbon nanostructures; porphyrins; photophysics; organic optoelectronics; optical scanning microscopy
Categories
Funding
- EU [PITN-GA-2008-215399]
- FNRS (FRFC) [2.4.550.09, 2.4.617.07.F]
- FNRS (MIS) [F.4.505.10.F]
- 'TINTIN' ARC project [09/14-023]
- Loterie Nationale
- University of Namur
- Belgian Federal Office for Science Policy BELSPO [IAP 6/27]
- Region Wallonne (Programme d'Excellence OPTI2MAT)
- CNR [PM.P04.010]
- Communaute Francaise de Belgique
- Belgian National Fund for Scientific Research (FRS-FNRS) [F.4501.05]
- FRFC [2.4546.08, 2.4505.09, 2.4510.11]
- University of Trieste
- FNRS
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The preparation and physical characterization of diverse porphyrin-derived double-walled carbon nanotubes (DWCNTs) conjugates are described. A porphyrin molecule is covalently linked and physically adsorbed to COOH-derived DWCNTs. The photophysical properties of all porphyrin-CNTs derivatives are studied in solution and in polymeric matrices. Definitive experimental evidence for photoinduced electron and/or energy transfer processes involving the porphyrin chromophores and the CNT wall is not obtained, but solid-state UV-vis absorption profiles display electronic transitions fingerprinting J- and H- type aggregates, where porphyrin molecules intermolecularly interact head-to-tail and face-to-face, respectively. In parallel, molecular modeling based on force-field simulations is performed to understand the structure of the porphyrin-CNTs interface and the nature of the interactions between the porphyrins and the DWCNTs. Finally, multilayered-type devices are fabricated with the aim of investigating the interaction of the porphyrin-derived DWCNTs with poly(3-hexylthiophene)-pyrene matrices containing small amounts of 1-[3-(methoxycarbonyl)propyl]-1-phenyl-[6.6]C61.
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