Magnetic nanoparticle ensembles with promising biophysical applications: An EPR study

被引：3
|
作者：
Shanina, B. D. [1 ]
Konchits, A. A. [1 ]
Krasnovyd, S. V. [1 ]
Shevchenko, Yu. B. [2 ]
Petranovs'ka, A. L. [3 ]
Rieznichenko, L. S. [4 ]
机构：
[1] NASU, V Lashkaryov Inst Semicond Phys, Prospect Nauky,41, UA-03028 Kiev, Ukraine
[2] NASU, Inst Nucl Res, Prospect Nauky,47, UA-03028 Kiev, Ukraine
[3] NASU, Chuiko Inst Surface Chem, Gen Naumov Str 17, UA-03164 Kiev, Ukraine
[4] NASU, FD Ovcharenko Inst Biocolloid Chem, Acad Vernadsky Blvd,42, UA-03142 Kiev, Ukraine
来源：
JOURNAL OF APPLIED PHYSICS | 2022年 / 132卷 / 16期
关键词：
ELECTRON-SPIN-RESONANCE; PARAMAGNETIC-RESONANCE; FE3O4; NANOPARTICLES; VERWEY TRANSITION; CONDUCTION; ABSORPTION; SIZE; METALS; ESR;
D O I：
10.1063/5.0107478
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this paper, we present the results of a study of the properties of silver and copper nanoparticle (NP) ensembles and Fe3O4:Gd:B composites, which are promising for their potential uses in biomedicine. Magnetic resonance is applied as the main method of analysis. The magnetic properties of the NPs are found to be highly sensitive to the nanoparticle size, which enables finding the size distributions of metal NPs, using magnetic measurements. The dependence of the magnetic properties of lyophilized ensembles of Ag and Cu NPs on the interaction with molecular oxygen is revealed. The composites magnetic system Fe3O4:Gd:B is a key component of a promising method for neutron-capture therapy. The magnetic properties of this system, which are the result of differences in the g-factors of its components, are described in detail. As a consequence, the dependence of the resulting g-factor on the ratio of the components is established.
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页数：9
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