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Related Experiment Videos

The Intrinsic (3)

Fu1, Chan, Miskowski

  • 1Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong (China).

Angewandte Chemie (International Ed. in English)
|October 3, 1999
PubMed
Summary

Researchers discovered near-UV triplet emission in a gold complex, [Au(2)(dcpm)(2)](ClO(4))(2). This emission originates from a specific excited state and can lead to visible light emissions when interacting with solvents or counterions.

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Area of Science:

  • Inorganic Chemistry
  • Photochemistry
  • Materials Science

Background:

  • Dimeric gold complexes are known for their interesting photophysical properties.
  • Understanding excited states is crucial for developing new luminescent materials.

Purpose of the Study:

  • To investigate the near-UV emission properties of [Au(2)(dcpm)(2)](ClO(4))(2).
  • To characterize the excited state responsible for the observed emission.
  • To explore the influence of counterions and solvents on luminescence.

Main Methods:

  • Spectroscopic studies (UV-Vis absorption, emission spectroscopy).
  • Synthesis and characterization of gold complexes with various counterions.

Main Results:

  • Discovery of a near-UV triplet emission band at 360-368 nm.
  • Assignment of the emission to the (3)[dsigma*psigma] excited state.
  • Observation of exciplex emissions in the visible region due to interactions with solvent or counterions.

Conclusions:

  • The (3)[dsigma*psigma] excited state is responsible for the near-UV emission in [Au(2)(dcpm)(2)]Y(2) complexes.
  • Luminescence properties can be tuned by varying counterions and solvents, leading to exciplex formation.

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