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Gold-silver bimetallic fluorescence quenching nanoprobe has been synthesized based on the gold triangular nanoplate with silver coating. In order to guarantee the specificity of the probe, surface modifications of the triangular nanoplates including carboxyl replacement, carboxyl activation and antibody connection have been carried out. The fluorescence spectral study indicates that the fluorescence...
Carcinoembryonic antigen (CEA) was used as a separator to prevent the Rhodamine 6G (R6G)-induced aggregation of colloidal gold nanoparticles. The destroyed aggregation has been monitored by measuring the absorption and resonance light scattering peaks corresponding to the longitudinal surface plasmon resonance (SPR) of the chain-like aggregated gold nanoparticles (AuNPs). It was found that the pre-adding...
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