1. Ethane-Bridged Zn Porphyrins Dimers in Langmuir–Schäfer Thin Films: Spectroscopic, Morphologic, and Magneto-Optical Surface Plasmon Resonance Characterization
- Author
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Alfonso Cebollada, Elías Ferreiro-Vila, Maria Grazia Manera, Gabriele Giancane, José Miguel García-Martín, Roberto Rella, Ludovico Valli, Antonio García-Martín, Ministerio de Ciencia e Innovación (España), Consejo Superior de Investigaciones Científicas (España), Comunidad de Madrid, Maria Grazia, Manera, Elias Ferreiro, Vila, Alfonso, Cebollada, José Miguel García, Martín, Antonio García, Martín, Giancane, Gabriele, Valli, Ludovico, and Roberto, Rella
- Subjects
Langmuir ,Conformational change ,Materials science ,BIS(ZINC PORPHYRIN) ,genetic structures ,OPTICAL ANISOTROPY ,Langmuir-Blodgett film ,Infrared spectroscopy ,CHEMICAL SENSORS ,02 engineering and technology ,010402 general chemistry ,Photochemistry ,01 natural sciences ,chemistry.chemical_compound ,Scanning probe microscopy ,LB FILMS ,Physical and Theoretical Chemistry ,Surface plasmon resonance ,Thin film ,Thin layers ,Surface Plasmon Resonance ,021001 nanoscience & nanotechnology ,Porphyrin ,eye diseases ,0104 chemical sciences ,3. Good health ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,General Energy ,chemistry ,Bis-porphyrins ,sense organs ,0210 nano-technology ,ZINC PORPHYRINS - Abstract
This work reports on the structural and spectroscopic properties, as well as the gas-sensing performance, of ethane-bridged Zn porphyrin dimers (ZnPP) in Langmuir-Schäfer (LS) thin films toward volatile organic compounds in a magneto-optical surface plasmon resonance (MOSPR) configuration. Structural and spectroscopic properties of ethane-bridged ZnPP thin films deposited onto proper Au/Co/Au magneto-optical substrates were inspected in dry air conditions and after exposure to amine vapors by means of IR spectroscopy, scanning probe microscopy, and MOSPR techniques. The molecular organization of the thin films deposited by the LS technique is investigated. The overall results suggest the presence in all cases of mainly the anti-conformer of the investigated porphyrin dimers. The strong interaction between n-butylamine vapors at high concentration and Zn porphyrin thin layers leads to a great conformational change in the porphyrin structure, which is linked to a change in the optical anisotropy of the realized LS layer. © 2012 American Chemical Society., This work has been funded by the European Commission (NMP3-SL-2008-214107-Nanomagma), the Spanish MICINN (CSD 2008-00023, MAT 2008-06765-C02-01/NAN, MAT2010-21228), CSIC (JAE fellowship for E.F.-V.), Comunidad de Madrid (S2009/MAT–1726, S2009/TIC–1476), and FIRB-Futuro in ricerca (Nanoplasmag project- RBFR10OAI0).
- Published
- 2012