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MultiShapeC, an algorithm to assess concentration in multi-shape nanoparticle samples: nanosilver, a case study
Rodrigo Nicolás Núñez1,2, Alicia Viviana Veglia1,2, Natalia Lorena Pacioni1,2
1Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Química Orgánica Haya de la Torre y Medina Allende s/n, Ciudad Universitaria X5000HUA Córdoba Argentina nataliap@fcq.unc.edu.ar n.lpacioni@unc.edu.ar +54-351-5353867 ext. 55374.
This study introduces MultiShapeC, an algorithm that accurately calculates nanoparticle concentrations by accounting for variations in shape and size. This improves the precision of parameters like Stern-Volmer constants in fluorescence quenching studies.
Area of Science:
- Colloid and Nanoparticle Science
- Photochemistry
- Analytical Chemistry
Background:
- Accurate determination of colloidal nanoparticle concentration is essential for quantitative analysis.
- Variations in nanoparticle shape, size, and dispersity significantly impact concentration calculations.
- Existing methods often fail to adequately address this variability, leading to inaccuracies in derived parameters.
Purpose of the Study:
- To develop and validate a novel algorithm, MultiShapeC, for precise calculation of colloidal nanoparticle concentrations.
- To incorporate nanoparticle shape variability and polydispersity into concentration determination.
- To enhance the accuracy of parameters derived from techniques like fluorescence quenching.
Main Methods:
- Development of the MultiShapeC algorithm to handle diverse nanoparticle shapes and size distributions.
- Validation of the algorithm using experimental data from the fluorescence quenching of carbazole.
- Application of the algorithm to silver nanoparticle systems for concentration calculation.
Main Results:
- The MultiShapeC algorithm successfully accounts for nanoparticle shape and size variability.
- Demonstrated significant improvements in the accuracy of concentration calculations compared to traditional methods.
- Validated the algorithm's effectiveness in the context of silver nanoparticle-mediated fluorescence quenching.
Conclusions:
- MultiShapeC offers a robust solution for accurate colloidal nanoparticle concentration determination.
- Accounting for shape and size polydispersity is critical for reliable quantitative analysis in nanochemistry.
- The algorithm provides a valuable tool for researchers in fields relying on nanoparticle characterization.
