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N-heterocyclic carbene-based polymer coating of gold nanoparticles and luminescent quantum dots

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Abstract

We test the capacity of two N-heterocyclic carbene (NHC)-based metal-coordinating compounds that present polyethylene glycol solubilizing blocks, a polymer and monomer, as ligands for the surface passivation of colloidal gold nanoparticles, luminescent quantum dots, and iron oxide nanoparticles (IONPs) alike in water. The long-term colloidal stability of the NHC-stabilized nanocolloids has been tested following phase transfer to aqueous media, which presents a highly challenging environment for such groups, due to the moisture-sensitive nature of NHC molecules. We find that nanocrystals coated with these NHC-containing ligands exhibit long-term colloidal stability in buffer media with no sign of degradation or aggregation build-up, while preserving their photo-physical properties, for extended periods of time.

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Acknowledgments

The authors thank FSU and the National Science Foundation (NSF-CHE #2005079) and Kasei-Asahi for financial support.

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Authors and Affiliations

  1. Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL, 32306, USA

    Neda Arabzadeh Nosratabad, Zhicheng Jin, Liang Du & Hedi Mattoussi

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  1. Neda Arabzadeh Nosratabad
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  2. Zhicheng Jin
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  3. Liang Du
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Correspondence to Hedi Mattoussi.

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Arabzadeh Nosratabad, N., Jin, Z., Du, L. et al. N-heterocyclic carbene-based polymer coating of gold nanoparticles and luminescent quantum dots. MRS Advances 8, 336–342 (2023). https://doi.org/10.1557/s43580-023-00555-9

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