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Heterocyclic Organometallics Group

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Our research deals with the development of various π-conjugated heterocyclic push-pull systems and the study of their physical and chemical properties. Our investigations have shown the existence of structure-property relationships in these heterocyclic compounds making them excellent building-blocks to engineer π-conjugated organic and organometallic moleculars systems, with applications in dye-sensitized solar cells, luminescence and non-linear optics.

Members

  • Raphaël Durand (PhD)

Research

Topic 1

Synthesis, studies of electrochemical, linear/nonlinear optical properties of heterocyclic organic and organometallic D-π-A “push-pull” chromophores incorporating in particular pyranylidene ligands as pro-aromatic donor groups (D), diazine rings as electron-withdrawing groups (A), and various functional organic or organometallic groups (Pt, Ru..) as π-linkers separating the donor and the acceptor groups.

Applications

  • NLO properties
  • Dye-sensitized solar cells

Key words

  • Heterocyclic groups : diazine, pyrimidine, pyranylidene
  • Metal center (Pt, Ru..)
  • Two photon absoption
  • Second harmonic generation
  • Photovoltaism

Topic 2

Synthesis and photophysical properties of diazine-based fluorophores.

Studies of media influence (polarity pH, presence of metal cations..) on their luminescence properties. White light emission from acid/base equilibrium.

Applications

Heterocyclic groups : pyrimidine, pyrazine

  • polarity sensors.
  • pH sensors.
  • LEDs and WOLEDs.

Key words

  • Intramolecular charge transfer
  • Fluorescence
  • White emission