Perhydrotriphenylene-based channel-forming inclusion compounds (ICs) and thin films made of polyphenylenevinylene (PPV)-type oligomers with terminal alkoxy groups are investigated and compared in a combined experimental and theoretical approach. Interchromophore interactions and host-guest interactions are elucidated by UV/Vis and Raman spectroscopy. The impact of the local environment of the chromophore on the optical and photophysical properties is discussed in light of quantum-chemical calculations. In stark contrast to thin films where preferential side-by-side orientation leads to quenching of photoluminescence (PL) via non-emissive traps, the ICs are found to be attractive materials for opto-electronic applications: they offer high chromophore concentrations, but at the same time behave as quasi-isolated entities of tightly packed, well-oriented objects with high PL quantum yields and the possibility of color tuning.

Aloshyna, M., Medina, B., Poulsen, L., Moreau, J., Beljonne, D., Cornil, J., et al. (2008). Oligophenylenevinylenes in spatially confined nanochannels: Monitoring intermolecular interactions by UV/Vis and Raman spectroscopy. ADVANCED FUNCTIONAL MATERIALS, 18(6), 915-921 [10.1002/adfm.200700647].

Oligophenylenevinylenes in Spatially Confined Nanochannels: Monitoring Intermolecular Interactions by UV/Vis and Raman Spectroscopy

MEINARDI, FRANCESCO;TUBINO, RICCARDO;
2008

Abstract

Perhydrotriphenylene-based channel-forming inclusion compounds (ICs) and thin films made of polyphenylenevinylene (PPV)-type oligomers with terminal alkoxy groups are investigated and compared in a combined experimental and theoretical approach. Interchromophore interactions and host-guest interactions are elucidated by UV/Vis and Raman spectroscopy. The impact of the local environment of the chromophore on the optical and photophysical properties is discussed in light of quantum-chemical calculations. In stark contrast to thin films where preferential side-by-side orientation leads to quenching of photoluminescence (PL) via non-emissive traps, the ICs are found to be attractive materials for opto-electronic applications: they offer high chromophore concentrations, but at the same time behave as quasi-isolated entities of tightly packed, well-oriented objects with high PL quantum yields and the possibility of color tuning.
Articolo in rivista - Articolo scientifico
Scientifica
nanochannels, inclusion compounds
English
915
921
Aloshyna, M., Medina, B., Poulsen, L., Moreau, J., Beljonne, D., Cornil, J., et al. (2008). Oligophenylenevinylenes in spatially confined nanochannels: Monitoring intermolecular interactions by UV/Vis and Raman spectroscopy. ADVANCED FUNCTIONAL MATERIALS, 18(6), 915-921 [10.1002/adfm.200700647].
Aloshyna, M; Medina, B; Poulsen, L; Moreau, J; Beljonne, D; Cornil, J; Di Silvestro, G; Cerminara, M; Meinardi, F; Tubino, R; Detert, H; Schrader, S; Egelhaaf, H; Botta, C; Gierschner, J
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/1057
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