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CNTs in Optoelectronic Devices: New Structural and Photophysical Insights on Porphyrin‐DWCNTs Hybrid Materials
Author(s) -
Aurisicchio Claudia,
Marega Riccardo,
Corvaglia Valentina,
Mohanraj John,
Delamare Romain,
Vlad Dana Alina,
Kusko Cristian,
Dutu Constantin Augustin,
Minoia Andrea,
Deshayes Gaëlle,
Coulembier Olivier,
Melinte Sorin,
Dubois Philippe,
Lazzaroni Roberto,
Armaroli Nicola,
Bonifazi Davide
Publication year - 2012
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201102632
Subject(s) - porphyrin , materials science , chromophore , molecule , photochemistry , carbon nanotube , absorption (acoustics) , covalent bond , perylene , chemical physics , chemical engineering , nanotechnology , organic chemistry , chemistry , composite material , engineering
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]C 61 .