title: Dendrimer driven self-assembly of SPR active silver-gold nanohybrids.
abstract: A fourth generation PAMAM dendrimer has been successfully employed for the development of a single step synthesis strategy for self-assembled Ag-Au nanohybrid structures. The surface plasmon resonance properties and the degree of self-assembly of the nanohybrid are strongly correlated with the stoichiometry of the metals which gives rise to enhanced plasmonic properties. The enhanced plasmonic response of the nanohybrids is modeled and is validated experimentally in a model HRP (horseradish peroxidise) bioassay carried out on an SPR-based biochip platform.
authors.affiliation: National Biophotonics and Imaging Platform, School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland. shibsekharroy@gmail.com
authors.forename: Shibsekhar
authors.initials: S
authors.lastname: Roy
authors.forename: Chandra K
authors.initials: CK
authors.lastname: Dixit
authors.forename: Gowri
authors.initials: G
authors.lastname: Manickam
authors.forename: Stephen
authors.initials: S
authors.lastname: Daniels
authors.forename: Colette
authors.initials: C
authors.lastname: McDonagh
mesh_terms: D050091:Dendrimers / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D006735:Horseradish Peroxidase / Q000378:metabolism; D053768:Metal Nanoparticles / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D015203:Reproducibility of Results; D012834:Silver / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D050091:Dendrimers; D012834:Silver; D006046:Gold; D006735:Horseradish Peroxidase