Guosong Hong

Publications (5)14.36 Total impact

• Source

  Available from: pku.edu.cn

  Article: Facile Fabrication of Two‐Dimensionally Ordered Macroporous Silver Thin Films and Their Application in Molecular Sensing

  Guosong Hong, Cheng Li, Limin Qi
  Advanced Functional Materials 10/2010; 20(21):3774 - 3783. · 10.18 Impact Factor
• Source

  Available from: pku.edu.cn

  Article: Facile Fabrication of Honeycomb-Patterned Thin Films of Amorphous Calcium Carbonate and Mosaic Calcite

  Cheng Li, Guosong Hong, Han Yu, Limin Qi
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  ABSTRACT: Facile fabrication of honeycomb-patterned thin films of amorphous calcium carbonate (ACC) and mosaic calcite was achieved via colloidal lithography at the solution surface. At first, honeycomb-patterned ACC (HP-ACC) thin films were fabricated by a polymer-induced ACC coating of the monolayer colloidal crystal (MCC) template at the air/water interface. Subsequent controlled crystallization of the preformed HP-ACC thin films under different conditions led to honeycomb-patterned, crystalline films with different microstructures. In particular, honeycomb-patterned, mosaic calcite thin films composed of single-crystalline calcite plates could form when thermal treatment at 400 °C was applied to the amorphous films. Additionally, dye molecules were incoporated into the HP-ACC thin film during its formation, enabling further functionality of the patterned thin film with fluorescence. Furthermore, the highly ordered HP-ACC thin films possessed brilliant structural colors and exhibited typical photonic properties.
  04/2010;
• Source

  Available from: chem.pku.edu.cn

  Article: Nanosphere Lithography at the Gas/Liquid Interface: A General Approach toward Free-Standing High-Quality Nanonets

  Cheng Li, Guosong Hong, Limin Qi
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  ABSTRACT: A general nanosphere lithography (NSL) approach toward facile fabrication of free-standing, large-area, high-quality nanonets was developed, which was based on a floating colloidal crystal monolayer (CCM) mask at the gas/liquid interface for materials deposition via interfacial reactions. The hole size, spacing, and thickness of the highly ordered nanonets, which showed interesting photonic properties, can be readily adjusted. This NSL approach at the gas/liquid interface can be easily extended to fabricate large-area ordered nanonets of various metal sulfides, metals as well as inorganic minerals. Furthermore, a variety of ordered gold nanoarrays with unusual patterns were produced by using nanonet bilayers as unique deposition masks, suggesting that the obtained transferable, high-quality nanonets can function as versatile lithographic masks to generate novel nanopatterns.
  12/2009;
• Source

  Available from: pku.edu.cn

  Article: Seeding-growth of helical mesoporous silica nanofibers templated by achiral cationic surfactant.

  Longping Zhou, Guosong Hong, Limin Qi, Yunfeng Lu
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  ABSTRACT: Helical mesoporous silica nanofibers with parallel nanochannels were synthesized in high yield via a novel seeding-growth method by using the achiral cationic surfactant cetyltrimethylammonium bromide (CTAB) as template without auxiliary additives. A general entropy-driven model taking into account the icelike structure water due to the hydrophobic effect was proposed to explain the formation of helical mesoporous silica nanofibers. It was indicated that helical silica mesostructures could result from a thick layer of highly ordered icelike water around thin silicate seed rods with a proper concentration, which was verified by the effect of various anions and organic additives on the formation of helical mesoporous silica.
  Langmuir 06/2009; 25(11):6040-4. · 4.19 Impact Factor
• Source

  Available from: Dapeng Yu

  Article: Wet Chemical Approaches to Patterned Arrays of Well-Aligned ZnO Nanopillars Assisted by Monolayer Colloidal Crystals

  Cheng Li, Guosong Hong, Pengwei Wang, Dapeng Yu, Limin Qi
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  ABSTRACT: Hexagonally patterned arrays of well-aligned, regular ZnO nanopillars with controlled size, shape, and orientation were directly fabricated on zinc foils via a facile wet chemical approach with the assistance of monolayer colloidal crystals (MCC). Two kinds of templates that were derived from MCC, i.e., inverted MCC (IMCC) and connected MCC (CMCC), were employed as masks to define the growth sites and spaces on zinc foils for the realization of site-specific patterned growth of ZnO nanopillars. Individually patterned arrays of ZnO nanopillars (i.e., one ZnO nanopillar growing at one single growth site) were readily produced. Interestingly, the vertically aligned ZnO nanopillars were also side-oriented, indicating a quasi-epitaxial growth on the zinc substrate. The diameter of the ZnO nanopillars can be controlled in a wide range from 60 to 900 nm by varying the structural parameters of the MCC templates and the growth conditions. Moreover, by decreasing the reaction solution concentration, a bundle of ZnO nanorods rather than an individual nanopillar were selectively grown at one single growth site. The as-grown ZnO nanopillar arrays were well-crystallized and exhibited strong excitonic emission and weak defect-related emission at room temperature, which promises their potential applications in optical devices such as stimulated emitters and lasing cavities.