Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.20333/2500136-2021-2-97-99
Ключевые слова: colloidal synthesis, gold nanostars, absorbtion spectra
Аннотация: The aim of the research. To evaluate two approaches to colloidal synthesis using two different non-toxic surfactants (PVP and Triton X-100) and their properties for future use. Material and methods. (PVP) The solution of GNSs with short tips was prepared in 200 ml vial. 20 mg of PVP (Polyvinylpyrrolidone, 1-ethenylpyrrolidin-2-one)Показать полностьюwere dissolved in the 200 mL of DMF (N,N-Dimethylmethanamide) (with the sonication to dissolve well). (Triton X-100) In a typical preparation of GNSs with long tips, the seed solution was prepared in a 20mL vial: 5mL of HAuCl4 540-4M in water are added to 5mL of an aqueous solution of TritonX-100 0.1M. To examinate the shape and properties of prepared gold nanostars Cary 100 Bio Spectrophotometer using quartz cuvettes was used to taken on UV-Vis spectra. Transmission Electron Microscopy (TEM) was used to obtain shape and size of prepared GNSs. Results. Microscopy analysis shows that the obtained GNSs have completely different shapes. The GNSs fabricated using synthesis approach with PVP have shorter tips and the cores are larger than the GNSs synthesized with Triton X-100 synthesis approach. TEM-images of the second ones show smaller size nanoparticles with the longer and thinner tips. Optical properties of the synthesized GNSs were analyzed using UV-vis-NIR absorbtion spectra, which shows maximum plasmon existence at 800 nm for GNSs synthesized with PVP and at 850 nm for GNSs synthesized with Triton X-100. Conclusion. In summary, we developed GNSs using two colloidal synthesis approaches with the use of two different non-toxic surfactants (PVP and Triton X-100). In the future, gold nanostars are planned to be used to develop highly sensitive methods of medical diagnostics.
Журнал: Сибирское медицинское обозрение
Выпуск журнала: № 2
Номера страниц: 97-99
ISSN журнала: 18199496
Место издания: Красноярск
Издатель: Красноярский государственный медицинский университет им. проф. В.Ф. Войно-Ясенецкого