title: Gold Nanoparticle Monolayers with Tunable Optical and Electrical Properties.
abstract: Centimeter-scale gold nanoparticle (Au NP) monolayer films have been fabricated using a water/organic solvent self-assembly strategy. A recently developed approach, drain to deposit, is demonstrated to be most effective in transferring the Au NP films from the water/organic solvent interface to various solid substrates while maintaining their integrity. The interparticle spacing was tuned from 1.4 to 3.1 nm using alkylamine ligands of different lengths. The ordering of the films increased with increasing ligand length. The surface plasmon resonance and the in-plane electrical conductivity of the Au NP films both exhibit an exponential dependence on the interparticle spacing. These findings show great potential in scaling up the manufacturing of high-performance optical and electronic devices based on two-dimensional metallic nanoparticle superlattices.
authors.affiliation: Aero-Propulsion, Mechatronics, and Energy Center, Florida State University , 2003 Levy Avenue, Tallahassee, Florida 32310, United States.|Department of Chemical & Biomedical Engineering, College of Engineering, Florida A&M University-Florida State University , 2525 Pottsdamer Street, Tallahassee, Florida 32310, United States.
authors.forename: Guang
authors.initials: G
authors.lastname: Yang
authors.affiliation: Department of Physics, Florida State University , Tallahassee, Florida 32306, United States.
authors.forename: Longqian
authors.initials: L
authors.lastname: Hu
authors.affiliation: Department of Physics, Florida State University , Tallahassee, Florida 32306, United States.
authors.forename: Timothy D
authors.initials: TD
authors.lastname: Keiper
authors.affiliation: Department of Physics, Florida State University , Tallahassee, Florida 32306, United States.
authors.forename: Peng
authors.initials: P
authors.lastname: Xiong
authors.affiliation: Aero-Propulsion, Mechatronics, and Energy Center, Florida State University , 2003 Levy Avenue, Tallahassee, Florida 32310, United States.|Department of Chemical & Biomedical Engineering, College of Engineering, Florida A&M University-Florida State University , 2525 Pottsdamer Street, Tallahassee, Florida 32310, United States.
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Hallinan