10nm-Axial Diameter Gold Nanorods Kit - Features and Applications by Strem Chemicals

Topics Covered

Background
10nm-Axial Diameter Gold Nanorods Kit
Transportation of 10nm-Axial Diameter Gold Nanorods Kit
Storage of 10nm-Axial Diameter Gold Nanorods Kit
Physical Properties of 10nm-Axial Diameter Gold Nanorods Kit
Applications of Gold Nanorods

Background

Since its inception, Strem Chemicals has focused on offering unique organometallic compounds for both academic and industrial research purposes. Close relationships with leading researchers in the field have enabled Strem to stay abreast of the latest scientific advances in and regularly add novel chemicals to our product portfolio. Most recently, Strem Chemicals has embraced the emerging area of nanotechnology and formed a collaboration with the Max-Planck-Institut fuer Kohlenforschung. A series of including metal nanoclusters, metal nanocolloids (organosols and hydrosols), metal nanopowders, metal nanoparticles, and magnetic fluids are now available from Strem Chemicals.

10nm-Axial Diameter Gold Nanorods Kit

10nm-Axial Diameter Gold Nanorods Kit from Strem Chemicals contains 25ml of each of the following:

Figure 1. 10nm-Axial Diameter Gold Nanorods Kit.

Transportation of 10nm-Axial Diameter Gold Nanorods Kit

10nm-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.

Storage of 10nm-Axial Diameter Gold Nanorods Kit

10nm-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 resuspend 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 10nm-Axial Diameter Gold Nanorods Kit

The physical properties of 10nm-Axial Diameter Gold Nanorods Kit are outlined in the following table.

Part #

Axial diameter (nm)

Longitudinal Size (nm)

Axial peak SSRP (nm)

Peak LSPR Wavelength (nm)

Wt. Conc (mg/ml)

LSPR Molar Ext. (M-1cm-1)

SSPR Molar Ext. (M-1cm-1)

79-6020

10

29

512

808

29.7

8.99E+08

2.25E+08

79-6025

10

35

512

780

33.4

9.40E+08

2.35E+08

79-6030

10

38

512

750

34.9

9.81E+08

2.45E+08

79-6035

10

41

512

700

36.1

1.02E+09

2.55E+08

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.

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 photo-damage 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.

Source: Strem Chemicals.

For more information on this source please visit Strem Chemicals.

Date Added: Dec 2, 2008 | Updated: Sep 16, 2013
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