Preparation of luminescent RE2-xEux(MoO4)3 (RE=Y and La) amino-functionalized silica nanoparticles for biological applications
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2016
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INTERNATIONAL CONFERENCE ON EXCITED STATES OF TRANSITION ELEMENTS, 6th
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Nanomaterials are used in many areas of biological research Nanoparticles can be used as active
components in various functional materials and devices of interest for bio-applications.
Nanoparticles have long been signaled as a potential revolution in the way we probe and interact
with biological materials and organisms. This is because they are small enough to interact with their
environment at a molecular level, but strong enough to maintain useful properties such as
luminescence over extended periods. However, the physical properties of the host materials with
nanometer dimensions may differ markedly from those of their bulk counterparts due to the particle
size-dependent influences such as structure disordering and surface defects.
The development of materials incorporated in the silica has been studied since these materials
exhibit intrinsic luminescent properties of the inorganic part and characteristics of the silica matrix.
In the present work RE2-xEux(MoO4)3 compounds incorporated into silica particles were prepared
using a microwave synthesis procedure. Then, the material was dispersed in ethyl alcohol and
functionalized with APTES: 3-aminopropyltriethoxisilane. The emission spectra show broad bands
when compared with the emission spectra of the own rare earth compound. The narrow lines are
assigned to 5D07F0-4 transitions.
Emission spectrum of the RE2-xEux(MoO4)3 @ Si dispersion showed an enlargement of the bands.
It is also observed the broadened peak of the 5D07FJ transitions in the luminescent aminofunctionalized
silica particles as compared with the core compound spectrum. These materials were
conjugated to anti-PSA antibody and presented high efficient performance in detect PSA from the
blood serum. They can concluded that particles are potential candidates for development of the
bioassays acting as a biomarker.
Como referenciar
FELINTO, M.C.F.C.; DIAS, C.L.; GARCIA, V.; NAKAMURA, L.K.O.; BARBOSA, H.P.; RODRIGUES, L.C.; BRITO, H.F.; MALTA, O.M.L.; TEOTONIO, E.E.S. Preparation of luminescent RE2-xEux(MoO4)3 (RE=Y and La) amino-functionalized silica nanoparticles for biological applications. In: INTERNATIONAL CONFERENCE ON EXCITED STATES OF TRANSITION ELEMENTS, 6th, August 21-26, 2016, Polanica Zdrój, Poland. Abstract... p. O-8. Disponível em: http://repositorio.ipen.br/handle/123456789/27393. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.