产品介绍 成分：修饰柠檬酸钠的金纳米颗粒、超纯水 性状：水溶液，呈酒红色。 特性：尺寸均匀，易于表面功能化：可按需修饰各种功能化分子如功能化PEG、PEI、PEG-FITC、PEG-FA（叶酸）、聚氨基酸、Biotin（生物素）、溶菌酶、壳聚糖、环糊精，拉曼探针分子，药物分子等，或官能团如羧基、胺基、巯基等。安全环保无污染，分散性、稳定性佳。胶体金在弱碱环境下带负电荷，可与蛋白质分子的正电荷基团形成牢固的结合，由于这种结合是静电结合，所以不影响蛋白质的生物特性。胶体金除了与蛋白质结合以外，还可以与许多其他生物大分子结合，如SPA、PHA、ConA等。根据胶体金的一些物理性状，如高电子密度、颗粒大小、形状及颜色反应，加上结合物的免疫和生物学特征，因而使胶体金广泛地应用于免疫学、组织学、病理学和细胞生物学等领域，如基于胶体金凝集效应的高灵敏检测、表面增强拉曼、蛋白质偶联等。 产品形貌(TEM 图像) 吸收光谱 Product description Ingredients: gold nanoparticles modified with sodium citrate, ultrapure water Properties: aqueous solution, burgundy in color. Features: uniform size, easy surface functionalization: various functionalized molecules such as functionalized PEG, PEI, PEG-FITC, PEG-FA (folic acid), poly(amino acids),biotin, lysozyme, chitosan, cyclodextrin, Raman probe molecules, drug molecules, etc., can be modified as needed. It is safe and environmental friendly without pollution, good dispersibility and stability. Colloidal gold is negatively charged in a weak alkaline environment and can form a solid bond with the positively charged groups of protein molecules, which does not affect the biological properties of proteins because the bond is electrostatic. Colloidal gold can be combined with many other biological macromolecules besides protein, such as SPA, PHA, ConA and so on. According to some physical properties of colloidal gold, such as high electron density, particle size, shape and color reaction, together with the immunological and biological characteristics of the bond, thus making colloidal gold widely used in immunology, histology, pathology and cell biology and other fields, such as highly sensitive detection based on colloidal gold agglutination effect, surface-enhanced Raman, protein coupling, etc. TEMimage UV-vis absorption spectra
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Gold nanoparticles
CAS number：unknown molecular formula：
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| Chinese alias | - | ||
| English alias | - | ||
| CAS number | unknown | molecular formula | |
| molecular weight | - | Exact mass | - |
| PSA | - | logp | - |
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