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Updated: Mar 26, 2026
Thermochemical Studies of NiII and ZnII Ternary Complexes Using Ion Mobility-Mass Spectrometry
Published on: June 8, 2022
High Photothermal Activity within Neutral Nickel Dithiolene Complexes Derived from Imidazolium-Based Ionic Liquids
Kenny Mebrouk1, Franck Camerel1, Olivier Jeannin1
1Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS, Université de Rennes 1 , Campus de Beaulieu, 35042 Rennes, France.
Researchers developed novel nickel complexes that efficiently convert near-infrared light into heat. These new materials, synthesized from ionic liquids, show promise for photothermal applications.
Area of Science:
- Materials Chemistry
- Coordination Chemistry
- Photochemistry
Background:
- Nickel complexes are explored for various applications.
- Near-infrared (NIR) light absorption is crucial for photothermal applications.
- Efficient photothermal conversion requires optimized molecular design.
Purpose of the Study:
- To synthesize and characterize a new series of nickel N,N'-dialkylimidazolidine-2,4,5-trithione complexes.
- To investigate the photothermal conversion properties of these novel nickel complexes.
- To explore their potential for NIR light-driven applications.
Main Methods:
- Synthesis of nickel complexes from imidazolium-based ionic liquids.
- Structural characterization using NMR, high-resolution mass spectrometry, and X-ray crystallography.
- Photothermal conversion efficiency measurements under laser irradiation.
Main Results:
- Successfully synthesized nickel N,N'-dialkylimidazolidine-2,4,5-trithione complexes with diverse alkyl chains.
- Confirmed structures through advanced spectroscopic and crystallographic techniques.
- Observed strong NIR absorption around 1000 nm with high extinction coefficients.
- Demonstrated high photothermal conversion efficiencies (around 30%) upon NIR laser irradiation.
Conclusions:
- The novel nickel complexes exhibit excellent NIR absorption and photothermal conversion capabilities.
- The synthetic route from ionic liquids provides an accessible pathway to these functional materials.
- These complexes hold significant potential for applications requiring efficient NIR-to-heat conversion.
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