Nanosensors, gold

Bompart et al. [125] reported the synthesis of composite nanoparticles of approximately 500 nm diameter consisting of a polymer core, a layer of gold nanoparticles attached to the core, and a few nanometers thick MIP outer layer (Fig. 13). These particles were used as individually addressable nanosensors, where surface-enhanced Raman spectroscopy was used to detect the binding of the target analyte, the beta-antagonist propranolol. A l,000x improved detection limit was... 

The fluorescence-based nanosensors were prepared by coating gold nanoparticles with polymeric layers that contain fluorescence-sensing components. Coating of the gold nanopaticles was based on alternate deposition of posi-... 

Fig. 6 x 100 fluorescence image of dextran fluorescein coated gold nanoparticles. The sensing particles were suspended in aqueous solution. A 470-490-nm excitation filter, a 505-nm dichroic mirror, and a 515-nm cut-on emission filter were used to collect the image. The exposure time is 0.5 s. The nanosensors are uniform in size and evenly coated. 

Tokareva I, Minko S, Fendler H, Hutter E (2004) Nanosensors based on responsive polymer brushes and gold nanoparticle enhanced transmission surface plasmon resonance spectroscopy. 1 Am Chem Soc 126 15950-15951... 

Among all the metal/polymer composites, silver composites are found to have important applications in material technologies like optical materials, catalytic systems, antibacterial materials, chemical nanosensors, and surface-enhanced Raman scattering (SERS). Gold, being noble, finds application in the biomedical field. ... 

Daniel M-C, Astruc D (2004) Gold nanoparticles assembly, suprrunolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology. Chem Rev 104 293-346 De Jongh LJ (ed) (1994) Physics and chemistry of metal cluster compounds. Kluwer, Dordrecht Di Francia G, Alfano B, La Ferrara V (2009) Conductometric gas nanosensors. J Sensors 659275(18)... 

N. Khlebtsov, L. A. Dykman and V. A. Bogatyrev, Two-layer model of colloidal gold bioconjugates and its application to the optimization of nanosensors. Colloid Journal (in Russian), 65, 508-517 (2003). 

Kim Y-P, Daniel WL, Xia Z, Xie H, Mirkin CA, Rao J (2010) Bioluminescent nanosensors for protease detection based upon gold nanoparticle-luciferase conjugates. Chem Commun 46 76-78... 

Chemical gold nanosensors based on localized surface plasmon resonance, G. BarbUlon, J.-L. Bijeon, J. Plain, M. L. d. 1. Chapelle, P.-M. Adam, and P. Royer, Gold Bull., 2007, 40, 240. 

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