Excimer Emission of Acridine Orange Adsorbed on Gadolinium-Yttrium Orthovanadate Nanoparticles
| Autor: | S. L. Yefimova, Alexander V. Sorokin, K.O. Hubenko, Yu. V. Malyukin, T. N. Tkacheva, Pavel Maksimchuk, O.O. Sedyh, O. G. Viagin |
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| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
Sociology and Political Science Chemistry Clinical Biochemistry Acridine orange 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Excimer 01 natural sciences Biochemistry Fluorescence Fluorescence spectroscopy 0104 chemical sciences Clinical Psychology chemistry.chemical_compound Yttrium orthovanadate Absorption (chemistry) 0210 nano-technology Spectroscopy Law Social Sciences (miscellaneous) |
| Zdroj: | Journal of Fluorescence. 28:943-949 |
| ISSN: | 1573-4994 1053-0509 |
| DOI: | 10.1007/s10895-018-2257-9 |
| Popis: | Studying the complexes of inorganic nanoparticles - organic dye molecules is of great importance for their theranostics application. In this paper, we report gadolinium-yttrium orthovanadate nanoparticles (VNPs) - Acridine Orange (AO) complex formation in water solutions. To study the interactions between VNPs and AO, the methods of steady-state and time-resolved spectroscopy were used. It was shown that in aqueous solutions containing VNPs, AO aggregation takes place with a sandwich-like stacking of AO molecules in the near-surface layer of VNPs. The VNPs-AO complex formation causes significant changes in the AO fluorescence spectrum, namely, the appearance of a new broad, structureless band in the long-wavelength spectral edge, which was not observed in AO spectrum in a pure water solution. By analyzing of the absorption, fluorescence excitation spectra and fluorescence decay, the static excimer origin of the long-wavelength fluorescence band has been established. |
| Databáze: | OpenAIRE |
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