Abstract
The interaction of cationic porphyrin with gold nanoparticles (GNPs) coated with polymer shells with positive and negative surface potentials in an aqueous solution is studied. The criteria for the formation of hybrid molecular-plasmon nanostructures based on the determination of the luminescence quenching mechanism according to the Stern–Volmer equation and the change in the shape of the porphyrin luminescence spectrum are established. The effect of the sign of the zeta potential of GNPs on the formation of hybrid molecular-plasmon nanostructures due to electrostatic interaction is established.
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ACKNOWLEDGMENTS
The authors thank the resource centers of the St. Petersburg State University Research Park: “Centre for Optical and Laser Materials Research", "Chemical Analysis and Materials Research Centre" and "Centre for Molecular and Cell Technologies.”
Funding
This study was supported by St. Petersburg State University (project no. 94031307).
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Povolotskiy, A.V., Soldatova, D.A., Lukyanov, D.A. et al. An Electrostatic Mechanism for the Formation of Hybrid Nanostructures Based on Gold Nanoparticles and Cationic Porphyrins. Russ. J. Phys. Chem. B 17, 1398–1402 (2023). https://doi.org/10.1134/S1990793123060192
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DOI: https://doi.org/10.1134/S1990793123060192