Gemini™ Gold Nanorods
650 nm
Products
SONA™ Gold nanorods are manufactured using patent pending and proprietary methods that result in
high-quality nanomaterials with long shelf lives, and some significantly improved surface properties.
Gemini GNR have widths between 10 and 15 nm, and lengths from 25-50 nm. Every batch is characterized
by TEM, DLS, and UV-Visible spectroscopy, excess reagents are completely removed, and of, course,
SONA’s customers do not have to worry about the removal of CTAB since these rods are prepared without
ever using CTAB. A detailed certificate of analysis (COA) is provided for every order; products on the
website are in stock unless otherwise noted, and will be shipped within two business days. SONA’s gold
nanorods are prepared at a standard concentration (OD=1).
COMING SOON – citrate capped and poly(ethylene glycol) coated varieties.
SONA GNRs - Features and Benefits:
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Vibrant colours – our GNR products are made in a range of wavelengths sizes that offer test kit
makers multiple colour options ranging from dark cobalt blue to browns and reds.
High Surface loading capacity - our unique surface chemistry allows for much easier
functionalization versus competing CTAB or PEG-Coated GNRs.
SONA products are made without using CTAB or CTA+.1
Excellent Shelf life – our patent-pending chemistry makes our rods more stable.
Excellent thermal stability in cold conditions –SONA GNRs have successfully survived multiple
freeze-thaw cycles.
Ease of re-dispersion - the characteristics of our patent-pending surface chemistry offers easy
and complete re-dispersion of precipitated surfactants back into solution.
SONA GNRs are NOT destabilized during surfactant exchange.
Ideal contrasting agents for bio-imaging – SONA’s patent-pending surface chemistry is
cytoplasma (cell content) friendly and allows for a much greater flexibility in color detection.
Our long wavelength GNR products offer extremely large aspect ratios.
CTAB – Cetyltrimethylammonium Bromide; CTA+ – Cetyltrimethylammonium cation.
SONA Nanotech, Ltd., 104 Marine Drive, Edwardsville, Nova Scotia, Canada, B4A 4S6
EMAIL: [email protected] Tel: 902-563-1958 FAX: 902-563-1360
Product Specs LSPR 650
Parameter
Nanorod length (nm)
Nanorod width (nm)
aspect ratio
Optical density
LPSR2 Maximum (nm)
LPSR/TSPR3 Ratio
Zeta Potential (mV)
pH
Colour
Particle Concentration
Solvent
2
3
Ranges
25 – 31
13 – 18
1.7 – 1.9
1.0 – 1.2
640 – 670
> 1.6
25 – 40
5.5 – 7.5
Indigo
> 30 g /mL
Stabilized with amphiphilic
agents in conductivity grade
water (18.0 MΩ cm1)
LSPR – Longitudinal Surface Plasmon Resonance.
TSPR – Transverse Surface Plasmon Resonance.
SONA Nanotech, Ltd., 104 Marine Drive, Edwardsville, Nova Scotia, Canada, B4A 4S6
EMAIL: [email protected] Tel: 902-563-1958 FAX: 902-563-1360
Procedure for re-dispersing surfactants.
The unique surfactant technology that underpins the production of the SONA gold nanorods
(GNR’s) has some significant advantages over GNR’s prepared using the
cetyltrimethylammonium bromide, or CTAB synthesis method. These surfactant technologies
lead to remarkably stable gold nanorods; however, in some cases, when your GNR sample is
subjected to temperatures well below room temperature for extended periods of time (as
would be typical of their recommended storage conditions), precipitated surfactant will be
visible in the solution. This does not impact the amount of GNR’s suspended in solution, nor is
it a sign of an irreversible aggregation process by which GNR’s are destroyed, as is often the
case with other CTAB prepared GNR’s. To homogenize the solutions, the following procedure is
recommended – place the GNR containing vial in a warm water bath (30-35 C) for
approximately 15 minutes. Remove the vial from the bath, gently swirl the solution inside,
and visually examine the contents for remaining precipitated surfactant. If precipitated
surfactant is still visible, repeat the process until the solution clears.
SONA Nanotech, Ltd., 104 Marine Drive, Edwardsville, Nova Scotia, Canada, B4A 4S6
EMAIL: [email protected] Tel: 902-563-1958 FAX: 902-563-1360