THE EFFECT OF THE INTERNAL HEAVY ATOM ON SINGLET OXYGEN GENERATION IN THE PRESENCE OF PLASMONIC NANOPARTICLES
Ibrayev N.Kh. Menshova E.P.
2025E.A. Buketov Karaganda University Publish house
Eurasian Physical Technical Journal
2025#22Issue 2-525 - 12 pp.
The heavy atom effect on singlet oxygen generation in the plasmon field of silver nanoparticles was investigated. The dyes rhodamine 123 and dibromrhodamine 123 in polyvinyl butyral films were used as sensibilisers. The dye films were deposited by spin-coating onto silver island films synthesised on the quartz surface. The results showed that the presence of bromine atom in the dye molecules increased the singlet oxygen generation efficiency. The calculated Stern-Follmer constants demonstrate the enhancement of molecular oxygen quenching of triplet states of dibromorhodamine 123 dye molecules in the presence of Ag nanoparticles.
heavy atom effect , intersystem crossing , nanoplasmonics , photosensitiser , singlet oxygen
Text of the article Перейти на текст статьи
Institute of Molecular Nanophotonics, Buketov Karaganda University, Karaganda, Kazakhstan
Institute of Molecular Nanophotonics, Buketov Karaganda University, Karaganda, Kazakhstan
Institute of Molecular Nanophotonics
Institute of Molecular Nanophotonics
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026