Gold nanoparticles multilayers

S. Tian, J. liu, T. Zhu, and W. KnoU, Polyaniline/gold nanoparticle multilayer films Assembly, properties, and biological applications, Chem. Mater., 16,4103 (2004). 

The detection of DNA hybridization using electrochemical readout is particularly attractive for the development of clinical diagnostics. The use of nanostructured materials in electrical detection for biomolecular sensing offers unique opportunities for electrochemical transduction of DNA sensing events. Tian and co-workers [175] have reported that PANI/Gold nanoparticle multilayer films electrocatalyze the oxidation of nicotinamide adenine dinucleotide (NADH) and detect DNA hybridization by both an electrochemical method and by surface plasmon enhanced fluorescence... 

The layer-by-layer growth of gold nanoparticle multilayers was performed by alternating exposures of... 

Santos, H.A., M. Chirea,V. Garcia-Morales, F. Silva, J.A. Manzanares, and K. Kontturi, Electrochemical study of interfacial composite nanostructures Polyelectrolyte/gold nanoparticle multilayers assembled on phospholipid/dextran sulfate monolayers at a liquid-liquid interface, J Phys Chem B, Vol. 109, (2005) p. 20105. 

C.Tsai.,T.Chang, C.Chen, F.Ko. P.Chen,(2005),An ultra sensitive DNA detection by using gold nanoparticle multilayer in nanogap electrode. Journal of Microelectronic Engineering 78-79,pp. 546-555... 

Auer et al. [134] presented an example for multilayer formation and controlled deposition of functionalized nanoparticles on SAM of mercaptohexadecanoic acid (MHA) using electrostatic interactions. As a pH-sensitive switchable linker between the SAM of MHA and negatively charged gold nanoparticles, bis-benzami-dine bolaamphiphiles having different alkyl spacers were used [135]. This strategy resulted in a potentially tunable and switchable property of the entire assembly. For example, the kinetics of adsorption as well as the final particle layer thickness can be controlled by the kind of bis-benzamidine used as the linker (Fig. 9.16). 

Similar polymer/Au nanoparticle multilayer thin films were made by Wu et al. in a study of pH-sensitive dissociation behavior of poly (3-thiophene acetic acid) (PTA A) and PAA in a LbL film (of 8 bilayers).50 Unlike the pure polymer LbL film, the Au nanoparticles-containing LbL films were difficult to be released from the substrate by varying the pH. It was suggested that the gold particles act as a cross-linker in between the multilayers, thus further enhancing the stability of the LbL films. 

The stepwise construction of self-assembled organic/inorganic multilayers based on multivalent supramolecular interactions between guest-functionalized dendrimers and nanoparticles and host-modified gold nanoparticles has been developed, yielding supramolecular LbL assembly (Fig. 13.8).12 Multilayer thin films composed of... 

Sohn BH, Seo BH (2001) Fabrication of the multilayered nanostructure of alternating polymers and gold nanoparticles with thin films of self-assembling diblock copolymers. Chem Mater 13(5) 1752-1757... 

Fig. 24 a Strapped porphyrin cleft 29 as receptor for the synthesis of rotaxanes [67] b gold nanoparticles shaded sphere) coated with methyl-imidazole to bind ZnTPP or triporphyrins [70] c self-assembled mixed multilayers of porphyrins on gold surfaces [72]... 

Choi, Y, Gu, M., Park, J., Song, H. K., and Kim, B. S. (2010). Graphene multilayer supported gold nanoparticles for efficient electrocatalysts toward methanol oxidation. y4dv. Energ. Mater., 2, pp. 1510-1518. 

Song, Z., Yuan, R.,et al. Multilayer structured amperometric immunosensor based on gold nanoparticles and Prussian blue nanopaiticlesAianocomposite functionalized interface. Electrochimica Acta,55(5), 1778-1784 (2010). 

Ferreyra, N., Coche-Guerente, L., Fatisson, J., Teijelo, M.L., Labbe, P. Layer-by-layer self-assembled multilayers of redox polyelectrolytes and gold nanoparticles. Chem. Commun. 2056-2057 (2003). doi 10.1039/B305347D... 

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