计算溶液所需的质量、体积或浓度。
,适用于对基线干扰要求严格的色谱和分析工作流程。
2-8°C储存。低温运输 。请查阅批次 COA 获取详细规格。
SDS、COA、产品数据表及规格说明书均可下载。可通过批号查询获取批次 COA。
在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
Product description:
Lipoic Acid contains both a carboxyl group and a dithiol group. The dithiol group strongly binds to the metal nanoparticle surface after reduction while the carboxylic acid group is available for further chemical derivatization. The acid group also provides a highly negatively charged surface at appropriately high pH.
Carboxyl surfaces can be used to covalently bind molecules with free amines (e.g. antibodies) to the surface of the particles. An amide bond between the acid surface and the free amine is formed using EDC / NHS chemistry.
At nanoComposix we use two different molecules to provide a surface with chemically accessible carboxylic acids. One is lipoic acid and the other is the lipoic acid derivative, lipoic-dPEG12-COOH, which is similar to lipoic acid but contains a PEG spacer between the thiol and carboxylic acid functional groups.
For BioReady gold nanoparticles with diameters less than 100 nm, the lipoic-dPEG12-acid is used. For larger diameter BioReady nanoparticles (e.g. 150 nm gold nanoshells), lipoic acid is used.
Peak Wavelength(> 90% peak absorbance):980 nm
Silica Core Diameter:200 nm ± 10 nm
Gold Shell Thickness:20 nm ± 7 nm
Hydrodynamic diameter (DLS): TEM diameter plus to 30 nm
Zeta potential: –25 to –70 mV
pH of solution: 5.0 to 7.5
Particle surface: lipoic acid
Solvent: .02 mM potassium carbonate