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BioReady Magnetic Gold Nanoshells – Carboxyl

As a global leader in gold nanoparticle production, nanoComposix specializes in providing high-purity and monodisperse nanomaterials – delivering the quality you need for consistent results.1,2

200 nm magnetic gold nanoshells combine the plasmonic properties of gold nanoparticles with the separation capability of a magnetic bead. The magnetic core allows for easy manipulation such as separation or concentration and enhances particle utility for a variety of therapeutic and diagnostic applications such as biosensors, lateral flow assays, SERS, drug delivery, and photothermal therapy.

BioReady Magnetic Gold Nanoshells offer a carboxyl ligand (lipoic acid) that is covalently bound to the metal surface enabling subsequent covalent conjugation. Antibodies and other amine-containing biomolecules efficiently bind to carboxyl gold nanoshells using EDC-NHS chemistry to make highly stable conjugates. Review our conjugation protocol or contact our experts for support.

nanoComposix provides high quality nanomaterials that are precisely engineered and highly characterized. All products are supplied with batch-specific CoAs including TEM, DLS, Zeta, & UV-Vis characterization data.

Intended for Research Use Only. Contact us for custom formulations, ISO 13485/cGMP compliant materials, or bulk supply requirements.

Provided at 10 OD in a .02 mM potassium carbonate solution.


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Don’t see the size you’re looking for? Please contact us about custom and semi-custom ordering.

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Bulk purchasing options are available – please contact us if you are interested

Typically ships within 5 business days

Product number: MSXR200-1M

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Specifications & CoA

TEM Diameter Size Distribution (CV) Example Certificate of Analysis
(How do I read this?)
205 nm ± 20 nm ≤ 15% Download Example CoA

Note: approximate ranges below are dependent on diameter

  • Zeta potential: < –40 mV
  • Particle surface: carboxyl
  • Solvent: .02 mM potassium carbonate solution
  • Peak wavelength (λmax): 780 to 890 nm

More Info & Documentation


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nanoComposix University


  1. Gold Nanoparticles Market - Global Industry Analysis, Size, Share, Growth, Trends, and Forecast, 2023-2031. (accessed 2024-02-15).
  2. Gold Nanoparticles Market Size, Share Trends, By Type (Nanorods, Nanoshells, Nanocages, Others), By End-use (Electronics, Healthcare, Chemicals, Others), By Application (Imaging, Sensors, Others), and By Region Forecast to 2030. (accessed 2024-02-15).

MSXR200 MSXR 200nm

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