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Updated: Nov 7, 2025

Synthesis of Near-Infrared Emitting Gold Nanoclusters for Biological Applications
Published on: March 22, 2020
Using Room Temperature Phosphorescence of Gold(I) Complexes for PAHs Sensing
Marian Rosental1,2, Richard N Coldman1, Artur J Moro3
1Department of Inorganic and Organic Chemistry, Inorganic Chemistry Section, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
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.
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