Using Room Temperature Phosphorescence of Gold(I) Complexes for PAHs Sensing

Marian Rosental, Richard N. Coldman, Artur J. Moro, Inmaculada Angurell, Rosa M. Gomila, Antonio Frontera, João Carlos Lima, Laura Rodríguez

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1 Citation (Scopus)

Abstract

The synthesis of two new phosphane-gold(I)-napthalimide complexes has been performed and characterized. The compounds present luminescent properties with denoted room temperature phosphorescence (RTP) induced by the proximity of the gold(I) heavy atom that favors intersystem crossing and triplet state population. The emissive properties of the compounds together with the planarity of their chromophore were used to investigate their potential as hosts in the molecular recognition of different polycyclic aromatic hydrocarbons (PAHs). Naphthalene, anthracene, phenanthrene, and pyrene were chosen to evaluate how the size and electronic properties can affect the host:guest interactions. Stronger affinity has been detected through emission titrations for the PAHs with extended aromaticity (anthracene and pyrene) and the results have been supported by DFT calculation studies.

Original languageEnglish
Article number2444
JournalMolecules
Volume26
Issue number9
DOIs
Publication statusPublished - 22 Apr 2021

Keywords

  • DFT
  • gold(I)
  • molecular recognition
  • polycyclic aromatic hydrocarbons (PAHs)
  • room temperature phosphorescence

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