Synthesis of rod-like silica–gold core-shell structures

Hybrid nanomaterials consisting of functionalized fullerene and gold nanoparticle (NP) have been synthesized. Fullerene was functionalized by citric acid and used as reducing and capping agent for preparation of gold NPs. Functionalization of fullerene by use of citric acid was performed by enzymatic and thermal approaches. The core-shell structures containing gold NPs as core and fullerene as shell (gold/fullerene) were prepared. It was found that method and density of functionalization of fullerene effect final structure and therefore their physicochemical property of hybrid nanomaterial dramatically. Ultraviolet-visible (UV-Vis) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), atomic force microscopy (AFM), transmission electron microscopy (TEM) were used to analyze the structure of the synthesized hybrid nanomaterial and also study their self-assembly and physicochemical properties. Effect of the size, structure and morphology (e.g., agglomeration) of the synthesized hybrid nanomaterial on their UV-Vis absorption behavior has been also verified by theoretical modeling.

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Carbon–gold core–shell structures: formation of shells consisting of gold nanoparticles

Chemical Communications ◽

10.1039/c2cc30372h ◽

2012 ◽

Vol 48 (33) ◽

pp. 3972 ◽

Cited By ~ 19

Author(s):

Jerzy Choma ◽

Dominik Jamioła ◽

Katarzyna Augustynek ◽

Michal Marszewski ◽

Mietek Jaroniec

Keyword(s):

Gold Nanoparticles ◽

Shell Structures ◽

Core Shell ◽

Gold Core

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Synthesis of Contiguous Silica−Gold Core−Shell Structures: Critical Parameters and Processes

Langmuir ◽

10.1021/la703580r ◽

2008 ◽

Vol 24 (9) ◽

pp. 5109-5112 ◽

Cited By ~ 54

Author(s):

Nopphawan Phonthammachai ◽

James C. Y. Kah ◽

Guo Jun ◽

Colin J. R. Sheppard ◽

Malini C. Olivo ◽

...

Keyword(s):

Shell Structures ◽

Critical Parameters ◽

Core Shell ◽

Gold Core

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Current Status of Magnetite-Based Core@Shell Structures for Diagnosis and Therapy in Oncology Short running title: Biomedical Applications of Magnetite@Shell Structures

Current Pharmaceutical Design ◽

10.2174/1381612821666150917093543 ◽

2015 ◽

Vol 21 (37) ◽

pp. 5417-5433 ◽

Cited By ~ 8

Author(s):

Ângela Andrade ◽

José Fabris ◽

Rosana Domingues ◽

Márcio Pereira

Keyword(s):

Biomedical Applications ◽

Shell Structures ◽

Current Status ◽

Core Shell ◽

Diagnosis And Therapy

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Designing active mats based on cellulose acetate/polycaprolactone core/shell structures with different release kinetics

Carbohydrate Polymers ◽

10.1016/j.carbpol.2021.117849 ◽

2021 ◽

Vol 261 ◽

pp. 117849 ◽

Cited By ~ 1

Author(s):

Adrián Rojas ◽

Eliezer Velásquez ◽

Constanza Piña ◽

María José Galotto ◽

Carol López de Dicastillo

Keyword(s):

Cellulose Acetate ◽

Release Kinetics ◽

Shell Structures ◽

Core Shell

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Microscopic Deformation Behavior and Crack Resistance Mechanism of Core–Shell Structures in Highly‐Toughened PP/PA6/EPDM‐g‐MA Ternary Blends

Macromolecular Materials and Engineering ◽

10.1002/mame.202100174 ◽

2021 ◽

pp. 2100174

Author(s):

Majid Mehrabi‐Mazidi ◽

Mir Karim Razavi‐Aghjeh

Keyword(s):

Crack Resistance ◽

Deformation Behavior ◽

Resistance Mechanism ◽

Shell Structures ◽

Core Shell ◽

Ternary Blends ◽

Microscopic Deformation

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A SERS Study of Charge Transfer Process in Au Nanorod–MBA@Cu2O Assemblies: Effect of Length to Diameter Ratio of Au Nanorods

Nanomaterials ◽

10.3390/nano11040867 ◽

2021 ◽

Vol 11 (4) ◽

pp. 867

Author(s):

Lin Guo ◽

Zhu Mao ◽

Sila Jin ◽

Lin Zhu ◽

Junqi Zhao ◽

...

Keyword(s):

Charge Transfer ◽

Shell Structure ◽

Shell Structures ◽

Core Shell ◽

Absorption Bands ◽

Au Nanorods ◽

The Core ◽

Band Position ◽

Surface Enhanced Raman ◽

Core Shell Structure

Surface-enhanced Raman scattering (SERS) is a powerful tool in charge transfer (CT) process research. By analyzing the relative intensity of the characteristic bands in the bridging molecules, one can obtain detailed information about the CT between two materials. Herein, we synthesized a series of Au nanorods (NRs) with different length-to-diameter ratios (L/Ds) and used these Au NRs to prepare a series of core–shell structures with the same Cu2O thicknesses to form Au NR–4-mercaptobenzoic acid (MBA)@Cu2O core–shell structures. Surface plasmon resonance (SPR) absorption bands were adjusted by tuning the L/Ds of Au NR cores in these assemblies. SERS spectra of the core-shell structure were obtained under 633 and 785 nm laser excitations, and on the basis of the differences in the relative band strengths of these SERS spectra detected with the as-synthesized assemblies, we calculated the CT degree of the core–shell structure. We explored whether the Cu2O conduction band and valence band position and the SPR absorption band position together affect the CT process in the core–shell structure. In this work, we found that the specific surface area of the Au NRs could influence the CT process in Au NR–MBA@Cu2O core–shell structures, which has rarely been discussed before.

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