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Plasmonic core/shell nanoparticles with grafted fluorophore: Synthesis and emission controlстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Kartseva M.E., Kravchinskiy D.M., Morozov V.N., Staltsov M.S., Kuzmin V.A., Rudoy V.M., Dement'eva O.V.
- Журнал: Optical Materials
- Том: 159
- Год издания: 2025
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 116674
- DOI: 10.1016/j.optmat.2025.116674
- Аннотация: The peculiarities of the synthesis of spherical plasmonic nanoparticles with gold core and organosilica shell, aswell as the chemisorption on them of maleimide derivatives of sulfocyanine-3 (SuCy3) and borondipyrromethene(BDP R6G), characterized by high and low fluorescence quantum yields, respectively, are discussed.Using SuCy3 as an example, the possibility of controlling the emission of fluorophores in compositenanoparticles by varying the grafting density of their molecules onto the organosilica shell, as well as itsthickness, has been systematically studied. It is shown that fluorescence quenching is characteristic for particleswith either a small shell thickness (4 nm) or a high density of dye grafting (the intermolecular distance is ≤ 2nm). At the same time, in the range of shell thicknesses from 14 to 22 nm and at the distances between grafteddye molecules greater than 5 nm, there is a significant (up to 8-fold) fluorescence enhancement. In the case ofBDP R6G, a significant increase in the dye stability upon its chemisorption on the nanoparticle surface isdemonstrated.
- Добавил в систему: Карцева Мария Евгеньевна