title: Synthesis of one-dimensional silver oxide nanoparticle arrays and silver nanorods templated by Langmuir monolayers.
abstract: One-dimensional (1D) silver oxide nanoparticle arrays were synthesized by illuminating the composite Langmuir-Blodgett monolayers of porphyrin derivatives/Ag(+) and n-hexadecyl dihydrogen phosphate (n-HDP)/Ag(+) deposited on carbon-coated copper grids with daylight and then exposing them to air. Transmission electron microscopy (TEM) observation shows that the nanoparticle size is around 3 nm, with the separation of about 2-3 nm. High-resolution TEM (HRTEM) investigation indicates that the particles are made up of Ag(2)O. Ag nanorods with the width of 15-35 nm and the length of several hundreds of nanometers were synthesized by irradiating the composite Langmuir monolayers of porphyrin derivatives/Ag(+) and n-HDP/Ag(+) by UV-light directly at the air/water interface at room temperature. HRTEM image and selected-area electron diffraction (SAED) pattern indicate that the nanorods are single crystals with the (110) face of the face-centered cubic (fcc) silver parallel to the air/water interface. The formation of the 1D arrays and the nanorods should be attributed to the templating effect of the linear supramolecules formed by porphyrin derivative or n-HDP molecules in Langmuir monolayers through non-covalent interactions.
authors.affiliation: Key Laboratory for Colloid and Interface Chemistry of Education Ministry, Shandong University, Jinan 250100, China. hgliu@sdu.edu.cn
authors.forename: Hong-Guo
authors.initials: HG
authors.lastname: Liu
authors.forename: Fei
authors.initials: F
authors.lastname: Xiao
authors.forename: Chang-Wei
authors.initials: CW
authors.lastname: Wang
authors.forename: Qingbin
authors.initials: Q
authors.lastname: Xue
authors.forename: Xiao
authors.initials: X
authors.lastname: Chen
authors.forename: Yong-Ill
authors.initials: YI
authors.lastname: Lee
authors.forename: Jingcheng
authors.initials: J
authors.lastname: Hao
authors.forename: Jianzhuang
authors.initials: J
authors.lastname: Jiang