Nanoparticle gold nanoshell

F. and Buuren, T.v. (2005) Comment on Gold nanoshells improve single nanoparticle molecular sensors . Nano Letters, 5, 809-810. 

As described in papers using gold nanoshells that have also shown surface plasmon bands in the near-1R region [36, 37], the targeted delivery of nanoparticles allows us to... 

Fig. 6 An overview of the versatility of the fluorescent core-shell silica nanoparticle platform illustrations of single and dual-emission particles as well as gold-nanoshell encapsulated core-shell particles are shown at the centre of the figure, while a variety of applications including bio-imaging, drug delivery, sensing and therapeutics are shown in the periphery. Reproduced with permission from [55]...

It is notable that the gold nanoparticle concentration in the nanocomposite film is about 30 times lower than that of previously reported polymer/gold nanoshell systems. This can be explained by the particle size effect. As the size of particles decreases and approaches the nanometer scale, the surface area of the particles increases dramatically, and the nanoparticles act as effective scavengers of the polymer triplet state. This behavior is very important with regard to the use of the polymer/nanoparticles nanocomposite film as the active layer of PLEDs. Due to the high conductivity of gold nanoparticles, the injected electrons from the cathode can be transported directly to the anode resulting in the diode breakdown. As the nanoparticle volume fraction in the polymer increases, the device stability will decrease. 

Gold nanoshells with an inner SPIO nanoparticle core have demonstrated high contrast efficiency for MRI [187,190]. In addition, the metallic shell can be conjugated with antibodies raised against a particular cellular trait (e.g., tumor cells), and upon NIR irradiation photothermal treatment may be administered and subsequently tracked using MRI [187,190]. 

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