Study of streptavidin coated onto PAMAM dendrimer modified magnetite nanoparticles

Surface Modification of Superparamagnetic Magnetite Nanoparticles and Its Application for Detection of Anti-CEA Using Electrochemiluminescent Immunosensor

“…Streptavidin immobilization on the magnetite nanoparticles was conducted according to the method reported in literatures with some modification [52][53][54]. Typically, Fe 3 O 4 /APTES (50 mg) was dispersed via sonication into a 10 mL 10% glutaraldehyde solution in 0.05 mol L -1 phosphate buffer solution (PBS, pH 7.4), and then stirred repercussion for 3 h at room temperature.…”

Dendronization: A Useful Synthetic Strategy to Prepare Multifunctional Materials

“…The third type of nanostructures comprises nanoparticle-cored dendrimers [153] (NCDs, Figure 16(c)), which are core-shell dendritic nanomaterials formed by an inorganic nanoparticle (the core) located at the center of the structure and dendrons (the shell) attached to the core. The core can consist of different inorganic nanoparticles such as metallic (e.g., Au [20,36,[153][154][155][156][157][158][159][160][161][162][163][164][165][166][167][168][169][170][171][172], Pd [173][174][175], Pt [176]), metallic oxide (e.g., iron oxides) [177][178][179][180][181] or semiconductor (quantum dots, e.g., CdS, CdSe) [182] clusters. The inorganic core is functionalized with dendrons, in a radial way by specific interactions.…”

“…Alternatively, the third strategy involves the synthesis of MPCs with protecting molecules having functional groups on their periphery [166]. These terminal moieties are used as anchoring sites for the dendritic growing (Figure 17 dendritic architecture from the organic layer (divergent approach) [160,179,180]. In the dendritic-growing method, the use of a large excess of dendrons is avoided, resulting in a more cost-effective synthesis [184].…”

Research on the Structure and Performance of Bacterial Magnetic Nanoparticles

“…As we all know, there were only hydroxyl groups in the surface of synthetic magnetites [22]. So it is difficult to connect the synthetic magnetites with other small biomolecules, such as antibody, enzyme, and polypeptide and so on.…”