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A simple method based on electrostatic interactions was utilized to assemble silver nanoparticles (AgNPs) to graphene oxide (GO) sheets. This method allows conjugation of AgNPs with desired morphologies (densities, sizes and shapes) onto GO. In this process, poly(diallyldimethylammonium chloride) (PDDA) was introduced as an adhesive agent. The as-prepared graphene oxide–AgNPs composites (GO–AgNPs)...
In this paper, we propose an effective protocol for bacterial detection using antibody microarray-based strategies with gold nanoparticle probes. In this approach, bacteria are captured by immobilized IgGs on the microarray spots. The capturing events are marked by attachment of lectin (e.g. Ricinus Communis Agglutini (RCA) and Concanavalin A (ConA)) conjugated gold nanoparticles followed by silver...
In this paper, a kind of β-amyloid peptide (Aβ1–16) conjugated gold nanoparticles (Aβ1–16@GNPs) are prepared and employed as colorimetric indicator for studying the interaction of β-amyloid peptide with metallic ions (e.g. Zn 2+ and Ca 2+ ). In the presence of Zn 2+ , mono-dispersing Aβ1–16@GNPs enable to form aggregates or attach on the SHG-44 (human glioma cell) cellular...
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