Turkevich method for gold nanoparticle synthesis revisited

Article Abstract:

The process of gold nanoparticle formation by the well-known citrate reduction method is investigated in detail and compared to its variants of ultraviolet (UV) initiated reduction and ascorbate reduction. The results have shown that the control of the simple Turkevich process by the reduction conditions is enough to define particles in shape and size, while the kinetics of the extinction spectra have shown the multiple steps of primary and secondary clustering leading to polycrystallites.

Ultraviolet radiation, Optical properties, Dynamics, Dynamics (Mechanics), Mechanical properties, Structure, Nanoparticles

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Gold nanoparticle based FRET assay for the detection of DNA cleavage

Article Abstract:

Gold nanoparticle based fluorescence resonance energy transfer (FRET) assay is reported to monitor the cleavage of DNA by nucleases. Florescence signal enhancement is detected by a factor of 120 after the cleavage reaction in the presence of S1 nuclease.

Electric properties, Nucleases, Energy transformation

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