25nm-Axial Diameter Gold Nanorods Kit - Features and Applications

A series of including metal nanoclusters, metal nanocolloids (organosols and hydrosols), metal nanopowders, metal nanoparticles, and magnetic fluids are now available from Strem Chemicals.

25nm-Axial Diameter Gold Nanorods Kit

25nm-Axial Diameter Gold Nanorods Kit from Strem Chemicals contains 25ml of each of the following:

• 79-6000 Gold Nanorods (Axial Diameter-25nm) (Wavelength 550nm)
• 79-6005 Gold Nanorods (Axial Diameter-25nm) (Wavelength 600 nm)
• 79-6010 Gold Nanorods (Axial Diameter-25nm) (Wavelength 650 nm)
• 79-6015 Gold Nanorods (Axial Diameter-25nm) (Wavelength 700 nm)

Figure 1. 25nm-Axial Diameter Gold Nanorods Kit.

Transportation of 25nm-Axial Diameter Gold Nanorods Kit

25nm-Axial Diameter Gold Nanorods Kit is shipped in 18MΩ DI water with < 0.1% ascorbic acid and < 0.1% CTAB surfactant capping agent.

Figure 2. Representative TEMS.

Applications of Gold Nanorods

Gold nanorods (GNRs) exhibit transverse and longitudinal surface plasmon resonances (SPR) that correspond to electron oscillations perpendicular and parallel to the rod length direction, respectively. Their longitudinal surface plasmon wavelengths (LSPWs) are tunable from the visible to infrared regions. Their absorption cross sections are at least five orders larger than those of conventional dyes, and the light scattering by Au nanorods is several orders larger than the light emission from strongly fluorescent dyes.

The tunability in the LSPW, together with strongly enhanced scattering and absorption at the LSPW, makes GNRs useful for the formation of many functional composite materials, for example, with hydrogel, polymers, silica, and bacteria. GNRs also have an axial surface plasmon resonance (SSPR), though one-third that of the LSPR, is still many orders of magnitude greater than quantum dots and nanoshells.

GNRs also offer advantages of good biocompatibility, facile preparation, and conjugation with a variety of biomolecular ligands, antibodies, and other targeting moieties. They have therefore found wide applications in biochemical sensing, biological imaging, medical diagnostics, and therapeutics. Further, GNRs have found application in materials and optics, including polarizers, filters, and to improve the storage density in compact disks.

The effectiveness of GNRs as scattering-based biomedical imaging contrast agents and as photothermal therapeutic agents is strongly dependent on their scattering and absorption cross sections. In general, high scattering cross sections are favorable for cellular and biological imaging based on darkfield microscopy, while large absorption cross sections with small scattering losses allow for photothermal therapy with a minimal laser dosage. In addition, the LSPWs of GNRs are strongly desired to be in the spectral range of 650-900 nm).

Light irradiation in this region can penetrate deeper in tissues and cause less photodamage than UV-visible irradiation. Therefore, the ability to tailor both scattering and absorption of GNRs with different LSPWs is of ultimate importance for practical in vivo biomedical imaging and therapeutic applications.

Storage of 25nm-Axial Diameter Gold Nanorods Kit

25nm-Axial Diameter Gold Nanorods Kit is stored at 4°C. Do not freeze. CTAB, may cause a cloudy appearance at low temperatures. Before use, warm to room temperature to re-suspend excess CTAB. Particularly for the larger nanorods, make sure to homogenize bottles after long storage periods to re-suspend any sedimentation. Shelf life 6 months.

Physical Properties of 25nm-Axial Diameter Gold Nanorods Kit

The physical properties of 25nm-Axial Diameter Gold Nanorods Kit are outlined in the following table.

SPR = Surface plasmon resonance
LSPR = Longitudinal SPR peak
SSPR = Axial SPR peak
Shape monodispersity (% rods) > 95%
Size variation +/-10% (both dimensions)
Aspect ratio variation = Peak LSPR accuracy/96
All specs typical. May vary batch to batch.

This information has been sourced, reviewed and adapted from materials provided by Strem Chemicals.

For more information on this source, please visit Strem Chemicals.