Special Issue "Nanoporous Gold and Other Related Materials"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: 30 April 2018

Special Issue Editor

Guest Editor
Professor Keith J. Stine

University of Missouri, Department of Chemistry & Biochemistry, Center for Nanoscience, St Louis, MO 63121 USA
Website | E-Mail
Phone: +1-314-516-5346
Interests: surface modification; nanomaterials; porous materials; electrochemistry; microscopy; carbohydrates; lipids; biosensors

Special Issue Information

Dear Colleagues,

Nanoporous gold and other related nanoporous metals or porous nanoparticle assemblies have gained a great deal of attention in recent years due to their novel chemical, optical, and mechanical properties. Nanoporous gold has found application as a support for biomolecules for biosensor development, as a catalyst for oxidation of small molecules, as a material with plasmonic properties useful for optical sensing, as a matrix for controlled release, as a mechanical actuator, and in other areas. Many studies have focused on tuning the porosity of the material, and on studying the relationship between the porosity and the mechanical properties of the material. The material provides a high surface area on which formation of self-assembled monolayers can be performed to impart recognition properties for molecular binding or transport. Nanoporous gold is part of a group of materials known as nanoporous metals which are generally formed by dealloying processes. Nanoporous forms of metals other than gold also have interesting catalytic and optical properties. Related materials with porosity can be formed through the large-scale assembly of nanoparticles. This Special Issue is devoted to the preparation, characterization and application of these nanomaterials.

Prof. Dr. Keith J. Stine
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • nanoporous gold
  • nanoporous metal
  • dealloying
  • catalysis
  • biomolecule immobilization
  • chemical sensor
  • biosensor

Published Papers (2 papers)

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Research

Open AccessArticle Constructing Asymmetric Polyion Complex Vesicles via Template Assembling Strategy: Formulation Control and Tunable Permeability
Nanomaterials 2017, 7(11), 387; doi:10.3390/nano7110387
Received: 23 September 2017 / Revised: 27 October 2017 / Accepted: 8 November 2017 / Published: 13 November 2017
PDF Full-text (4239 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A strategy for constructing polyion complex vesicles (PICsomes) with asymmetric structure is described. Poly(methylacrylic acid)-block-poly(N-isopropylacrylamide) modified gold nanoparticles (PMAA-b-PNIPAm-@-Au NPs) were prepared and then assembled with poly(ethylene glycol)-block-poly[1-methyl-3-(2-methacryloyloxy propylimidazolium bromine)] (PEG-b-PMMPImB) via polyion
[...] Read more.
A strategy for constructing polyion complex vesicles (PICsomes) with asymmetric structure is described. Poly(methylacrylic acid)-block-poly(N-isopropylacrylamide) modified gold nanoparticles (PMAA-b-PNIPAm-@-Au NPs) were prepared and then assembled with poly(ethylene glycol)-block-poly[1-methyl-3-(2-methacryloyloxy propylimidazolium bromine)] (PEG-b-PMMPImB) via polyion complex of PMMA and PMMPImB. After removing the Au NPs template, asymmetric PICsomes composed of a PNIPAm inner-shell, PIC wall, and PEG outer-corona were obtained. These PICsomes have low protein absorption and thermally tunable permeability, provided by the PEG outer-corona and the PNIPAm inner-shell, respectively. Moreover, PICsome size can be tailored by using templates of predetermined sizes. This novel strategy for constructing asymmetric PICsomes with well-defined properties and controllable size is valuable for applications such as drug delivery, catalysis and monitoring of chemical reactions, and biomimetics. Full article
(This article belongs to the Special Issue Nanoporous Gold and Other Related Materials)
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Open AccessArticle Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer
Nanomaterials 2017, 7(11), 352; doi:10.3390/nano7110352
Received: 20 September 2017 / Revised: 19 October 2017 / Accepted: 23 October 2017 / Published: 27 October 2017
PDF Full-text (7188 KB) | HTML Full-text | XML Full-text
Abstract
Cu50Zr45Al5 bulk metallic glass (BMG) presents high fracture strength. For improving its plasticity and controlling its mechanical properties, superficial dealloying of the BMG was performed. A composite structure containing an inner rod-shaped Cu-Zr-Al amorphous core with high strength
[...] Read more.
Cu50Zr45Al5 bulk metallic glass (BMG) presents high fracture strength. For improving its plasticity and controlling its mechanical properties, superficial dealloying of the BMG was performed. A composite structure containing an inner rod-shaped Cu-Zr-Al amorphous core with high strength and an outer dealloyed nanoporous layer with high energy absorption capacity was obtained. The microstructures and mechanical properties of the composites were studied in detail. It was found, for the first time, that the mechanical properties of Cu50Zr45Al5 BMG can be controlled by adjusting the width of the buffer deformation zone in the dealloyed layer, which can be easily manipulated with different dealloying times. As a result, the compressive strength, compressive strain, and energy absorption capacity of the BMGs can be effectively modulated from 0.9 to 1.5 GPa, from 2.9% to 4.7%, and from 29.1 to 40.2 MJ/m3, respectively. The paper may open a door for developing important engineering materials with regulable and comprehensive performances. Full article
(This article belongs to the Special Issue Nanoporous Gold and Other Related Materials)
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