Preparation of concave magnetoplasmonic core-shell supraparticles of gold-coated iron oxide via ion-reducible layer-by-layer method for surface enhanced Raman scattering

Lee, Dong Kyu; Song, Younseong; Kim, Jeonghyo; Park, Enoch Y.; Lee, Jaebeom

doi:10.1016/j.jcis.2017.03.098

Cited by 22 publications

(26 citation statements)

References 45 publications

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“…A similar approach was used by Jin et al-except in this case an APTES functionalised silica coating is used in place of gelatin, and THPC is also used to reduce a layer of gold onto the Fe 3 O 4 nanoparticles [50]. An interesting method of obtaining concave magneto-plasmonic core-shell supraparticles is used by Lee et al [51]. The Fe 3 O 4 cores were prepared by the solvothermal method using PEI as a capping ligand.…”

Section: Solvothermal Methodsmentioning

confidence: 99%

Multimodal Magnetic-Plasmonic Nanoparticles for Biomedical Applications

2018

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Magnetic plasmonic nanomaterials are of great interest in the field of biomedicine due to their vast number of potential applications, for example, in molecular imaging, photothermal therapy, magnetic hyperthermia and as drug delivery vehicles. The multimodal nature of these nanoparticles means that they are potentially ideal theranostic agents-i.e., they can be used both as therapeutic and diagnostic tools. This review details progress in the field of magnetic-plasmonic nanomaterials over the past ten years, focusing on significant developments that have been made and outlining the future work that still needs to be done in this fast emerging area. The review describes the main synthetic approaches to each type of magnetic plasmonic nanomaterial and the potential biomedical applications of these hybrid nanomaterials.

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Section: Solvothermal Methodsmentioning

confidence: 99%

Multimodal Magnetic-Plasmonic Nanoparticles for Biomedical Applications

2018

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“…The first one includes various types of application of the nanosized layers on the initial nanoparticle surface. This can be done by precipitation from a gaseous phase, for example, by CVD, PVD, ALD (ML) methods [12][13][14][15][16][17]; or by precipitation from a liquid phase by SILD and LbL methods [18,19]. Layers and shells can be obtained by transport from one particle to another [20][21][22][23] as a result of non-autonomous (surface) phase movement [23].…”

Section: Introductionmentioning

confidence: 99%

Formation mechanism of core-shell nanocrystals obtained via dehydration of coprecipitated hydroxides at hydrothermal conditions

Almjasheva¹,

Krasilin²,

Гусаров³

2018

Nanosystems: Phys. Chem. Math.

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Here, we propose a formation mechanism for core-shell nanoparticles by self-organization in coprecipitated mixed hydroxides under hydrothermal conditions. A thermodynamic reason for this process is because of a decrease in the components' solubilities together with an increase of structure's dimension. As a particular example of such type of behavior, we investigate core-shell nanoparticle formation in the ZrO 2-Y 2 O 3-H 2 O system.

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“…23,24 Among the most used synthetic approaches are the impregnation methods, which achieve the synthesis of OMP|AuNPs by triggering the formation of metallic gold from soluble gold precursors by means of chemical reduction or photochemical decomposition. [25][26][27][28] Because of the poor interaction between metallic gold and oxide surfaces, [29][30][31][32] gold heterogeneous nucleation from soluble species is disadvantaged versus gold homogeneous nucleation. Consequently, these methods usually lead to profuse formation of free-standing AuNPs, low gold loading on the OMPs surface and AuNPs unevenly dispersed on the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…This last feature makes necessary further post-synthesis purication steps to separate OMP|AuNPs from the free-standing AuNPs. All this issues can be sorted by functionalizing the OMPs in order to bind AuNPs by using molecular bridges; [29][30][31][32][33][34] however, this strategy requires multiple steps and leads to variable yields. 35 Another synthesis approach frequently used in catalysis is the co-precipitation/calcination method developed by Haruta and co-workers.…”

Section: Introductionmentioning

confidence: 99%