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2008-03-25 - Article/Dans un journal avec peer-review - Anglais - 7 page(s)

Aloshyna M., Milian Medina B., Poulsen L., Moreau Jonathan, Beljonne David , Cornil Jérôme , Di Silvestro G., Cerminara M., Meinardi F., Tubino R., Detert H., Schrader S., Egelhaaf H.J., Botta C., Gierschner J., "Oligophenylenevinylenes in Spatially Confined Nanochannels: Monitoring Intermolecular Interactions by UV/Vis and Raman Spectroscopy" in Advanced Functional Materials, 18, 6, 915-921

  • Edition : Wiley-VCH Verlag, Weinheim (Germany)
  • Codes CREF : Chimie quantique (DI1321), Spectroscopie [électromagnétisme, optique, acoustique] (DI1255)
  • Unités de recherche UMONS : Chimie des matériaux nouveaux (S817)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) 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.

Notes :
  • (Anglais) Lecture en ligne: http://onlinelibrary.wiley.com/doi/10.1002/adfm.200700647/pdf
  • (Anglais) Publié en ligne le 18 mars 2008
Identifiants :
  • DOI : 10.1002/adfm.200700647