Special Issue "Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings"

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: closed (31 August 2016).

Special Issue Editor

Prof. Dr. Naba K. Dutta
Website
Guest Editor
1. School of Chemical Engineering, Faculty of Engineering, Computer & Mathematical Sciences, University of Adelaide, Adelaide SA 5005, Australia
2. Future Industries Institute, University of South Australia, Mawson Lakes Campus, South Australia-5095, Australia
Interests: polymer materials; nanomaterials; biomaterials; thin film; materials for energy; electrocatalysis; fuel cells; organic photovoltaics; hybrid coating; protective coatings
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Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to highlighting the important advances and innovations in “Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings”. Organic-inorganic hybrids are composite materials consisting of two constituents. One of the components is inorganic and the other is organic in nature, which are uniformly dispersed at the nanometre level, but are separated by a defined interface. In such materials the final characteristics and functions are critically determined by the quality of the interface and the hierarchical organization.

Mother Nature has demonstrated her remarkable ability to organize the (bio)organic and inorganic components at the nanoscale with a very high level of complexity, with hierarchical constructions on a scale ranging from nanometres, to micrometres, to millimetres, to create multitudes of organic-inorganic hybrids, including crustacean carapaces, mollusc shells, animal horns, and bone and teeth tissue in vertebrates. The sophistication of such biological hybrids far surpasses the current accomplishments realized in materials science; and they are able to perform complicated tasks. However, during the past few decades, remarkable advancements have been made by the scientific community in producing a diverse range of organic-inorganic hybrids with carefully controlled interfaces, morphologies, porosities, textures, and functionalities. The vastly expanding literature has reported numerous approaches, including environmentally friendly sol-gel techniques, template mediated hybridization, and assembly of nanobuilding blocks (ANBB) to design and tailor-make multifunctional organic-inorganic hybrids with easy processing, fabrication, shaping, and patterning; and unique chemical, physical, electrical, electronic, or optical properties and qualities.

Numerous silica- or/and siloxane-based hybrid organic-inorganic materials have been developed in the past few decades. Research on organic-inorganic hybrid materials, containing trivalent lanthanide ions and other rare-earth metals, is currently a very active field, in order to meet the challenging requirements in the areas of phosphors, lighting, integrated optics and optical telecommunications, solar cells, and biomedicine. ANBB has the potential to revolutionize the development and assembly of multifunctional organic-inorganic hybrids. Organic-inorganic hybrids developed using sol-gel approach in the material science has rapidly become attractive for a variety of coatings technology.

The goal of this Special Issue is to publish original research articles, as well as critical reviews and perspectives from leaders, in both academia and industry, on all aspects related to the recent advances in the design, synthesis, development, and potential challenges in “Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings” The contributions from the authors on the new concepts, mechanisms, and the potential impact of “Organic-Inorganic Hybrid Thin Films and Coatings” on environmental issues are also welcome.

Prof. Dr. Naba K. Dutta
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. Coatings 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 1600 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

  • sol-gel coatings
  • multifunctional coatings
  • nanostructured coatings
  • anticorrosion coatings
  • barrier coatings
  • organ-inorganic hybrid thin film
  • optically active hybrid thin film
  • organic-inorganic perovskites
  • catalytically active hybrids
  • self-cleaning coating
  • self-healing coatings
  • antifouling coatings
  • bioactive hybrid coatings
  • water based hybrid coatings
  • environmental impact

Published Papers (7 papers)

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Research

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Open AccessArticle
Novel Thiol-Ene Hybrid Coating for Metal Protection
Coatings 2016, 6(2), 17; https://doi.org/10.3390/coatings6020017 - 07 Apr 2016
Cited by 7
Abstract
A novel hybrid anticorrosion coating with dual network of inorganic (Si–O–Si) and organic bonds (C–S–C) was prepared on metal through an in situ sol-gel and thiol-ene click reaction. This novel interfacial thin film coating incorporates (3-mercaptopropyl) trimethoxysilane (MPTS) and 1,4-di(vinylimidazolium) butane bisbromide based [...] Read more.
A novel hybrid anticorrosion coating with dual network of inorganic (Si–O–Si) and organic bonds (C–S–C) was prepared on metal through an in situ sol-gel and thiol-ene click reaction. This novel interfacial thin film coating incorporates (3-mercaptopropyl) trimethoxysilane (MPTS) and 1,4-di(vinylimidazolium) butane bisbromide based polymerizable ionic liquid (PIL) to form a thiol-ene based photo-polymerized film, which on subsequent sol-gel reaction forms a thin hybrid interfacial layer on metal surface. On top of this PIL hybrid film, a self-assembled nanophase particle (SNAP) coating was employed to prepare a multilayer thin film coating for better corrosion protection and barrier performance. The novel PIL hybrid film was characterised for structure and properties using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The corrosion protection performance of the multilayer coating was examined using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The results reveal that this novel double layer coating on metal offers excellent protection against corrosion and has remarkably improved the barrier effect of the coating. Full article
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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Review

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Open AccessReview
Recent Developments in Accelerated Antibacterial Inactivation on 2D Cu-Titania Surfaces under Indoor Visible Light
Coatings 2017, 7(2), 20; https://doi.org/10.3390/coatings7020020 - 06 Feb 2017
Cited by 21
Abstract
This review focuses on Cu/TiO2 sequentially sputtered and Cu-TiO2 co-sputtered catalytic/photocatalytic surfaces that lead to bacterial inactivation, discussing their stability, synthesis, adhesion, and antibacterial kinetics. The intervention of TiO2, Cu, and the synergic effect of Cu and TiO2 [...] Read more.
This review focuses on Cu/TiO2 sequentially sputtered and Cu-TiO2 co-sputtered catalytic/photocatalytic surfaces that lead to bacterial inactivation, discussing their stability, synthesis, adhesion, and antibacterial kinetics. The intervention of TiO2, Cu, and the synergic effect of Cu and TiO2 on films prepared by a colloidal sol-gel method leading to bacterial inactivation is reviewed. Processes in aerobic and anaerobic media leading to bacterial loss of viability in multidrug resistant (MDR) pathogens, Gram-negative, and Gram-positive bacteria are described. Insight is provided for the interfacial charge transfer mechanism under solar irradiation occurring between TiO2 and Cu. Surface properties of 2D TiO2/Cu and TiO2-Cu films are correlated with the bacterial inactivation kinetics in dark and under light conditions. The intervention of these antibacterial sputtered surfaces in health-care facilities, leading to Methicillin-resistant Staphylococcus Aureus (MRSA)-isolates inactivation, is described in dark and under actinic light conditions. The synergic intervention of the Cu and TiO2 films leading to bacterial inactivation prepared by direct current magnetron sputtering (DCMS), pulsed direct current magnetron sputtering (DCMSP), and high power impulse magnetron sputtering (HIPIMS) is reported in a detailed manner. Full article
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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Open AccessReview
Molecularly Imprinted Polymer/Metal Organic Framework Based Chemical Sensors
Coatings 2016, 6(4), 42; https://doi.org/10.3390/coatings6040042 - 05 Oct 2016
Cited by 6
Abstract
The present review describes recent advances in the concept of molecular imprinting using metal organic frameworks (MOF) for development of chemical sensors. Two main strategies regarding the fabrication, performance and applications of recent sensors based on molecularly imprinted polymers associated with MOF are [...] Read more.
The present review describes recent advances in the concept of molecular imprinting using metal organic frameworks (MOF) for development of chemical sensors. Two main strategies regarding the fabrication, performance and applications of recent sensors based on molecularly imprinted polymers associated with MOF are presented: molecularly imprinted MOF films and molecularly imprinted core-shell nanoparticles using MOF as core. The associated transduction modes are also discussed. A brief conclusion and future expectations are described herein. Full article
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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Open AccessReview
Hybrid Sol-Gel Coatings: Smart and Green Materials for Corrosion Mitigation
Coatings 2016, 6(1), 12; https://doi.org/10.3390/coatings6010012 - 16 Mar 2016
Cited by 36
Abstract
Corrosion degradation of materials and metallic structures is one of the major issues that give rise to depreciation of assets, causing great financial outlays in their recovery and or prevention. Therefore, the development of active corrosion protection systems for metallic substrates is an [...] Read more.
Corrosion degradation of materials and metallic structures is one of the major issues that give rise to depreciation of assets, causing great financial outlays in their recovery and or prevention. Therefore, the development of active corrosion protection systems for metallic substrates is an issue of prime importance. The promising properties and wide application range of hybrid sol-gel-derived polymers have attracted significant attention over recent decades. The combination of organic polymers and inorganic materials in a single phase provides exceptional possibilities to tailor electrical, optical, anticorrosive, and mechanical properties for diverse applications. This unlimited design concept has led to the development of hybrid coatings for several applications, such as transparent plastics, glasses, and metals to prevent these substrates from permeation, mechanical abrasion, and corrosion, or even for decorative functions. Nevertheless, the development of new hybrid products requires a basic understanding of the fundamental chemistry, as well as of the parameters that influence the processing techniques, which will briefly be discussed. Additionally, this review will also summarize and discuss the most promising sol-gel coatings for corrosion protection of steel, aluminium, and their alloys conducted at an academic level. Full article
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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Open AccessReview
Hybrid Organic/Inorganic Coatings Through Dual-Cure Processes: State of the Art and Perspectives
Coatings 2016, 6(1), 10; https://doi.org/10.3390/coatings6010010 - 02 Mar 2016
Cited by 18
Abstract
This paper reviews the current state of the art related to the synthesis and characterization of hybrid organic-inorganic (O/I) coatings obtained through the exploitation of dual-cure processes, which involve a photo-induced polymerization followed by a thermal treatment: this latter allows the occurrence of [...] Read more.
This paper reviews the current state of the art related to the synthesis and characterization of hybrid organic-inorganic (O/I) coatings obtained through the exploitation of dual-cure processes, which involve a photo-induced polymerization followed by a thermal treatment: this latter allows the occurrence of sol-gel reactions of suitable alkoxy precursors already embedded in the UV-curable system. After a brief introduction on hybrid organic-inorganic coatings, the first part of the review is focused on the design and feasibility issues provided by the dual-cure method, emphasizing the possibility of tuning the structure of the final hybrid network on the basis of the composition of the starting liquid mixture. Then, some recent examples of hybrid organic-inorganic networks are thoroughly described, showing their potential advances and the application fields to which they can be addressed. Full article
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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Open AccessReview
Epoxy Sol-Gel Hybrid Thermosets
Coatings 2016, 6(1), 8; https://doi.org/10.3390/coatings6010008 - 03 Feb 2016
Cited by 26
Abstract
Sol-gel methodologies are advantageous in the preparation of hybrid materials in front of the conventional addition of nanoparticles, because of the fine dispersion of the inorganic phase that can be reached in epoxy matrices. In addition, the use of organoalkoxysilanes as coupling agents [...] Read more.
Sol-gel methodologies are advantageous in the preparation of hybrid materials in front of the conventional addition of nanoparticles, because of the fine dispersion of the inorganic phase that can be reached in epoxy matrices. In addition, the use of organoalkoxysilanes as coupling agents allows covalent linkage between organic and inorganic phases, which is the key point in the improvement of mechanical properties. The sol-gel process involves hydrolysis and condensation reactions under mild conditions, starting from hydrolysable metal alkoxides, generally alkoxy silanes. Using the sol-gel procedure, the viscosity of the formulation is maintained, which is an important issue in coating applications, whereas the transparency of the polymer matrix is also maintained. However, only the proper combination of the chemistries and functionalities of both organic and inorganic structures leads to thermosets with the desired characteristics. The adequate preparation of hybrid epoxy thermosets enables their improvement in characteristics such as mechanical properties (modulus, hardness, scratch resistance), thermal and flame resistance, corrosion and antimicrobial protection, and even optical performance among others. Full article
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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Open AccessReview
Metal-Polymer Nanocomposites: (Co-)Evaporation/(Co)Sputtering Approaches and Electrical Properties
Coatings 2015, 5(3), 378-424; https://doi.org/10.3390/coatings5030378 - 29 Jul 2015
Cited by 33
Abstract
In this review, we discuss the basic concepts related to (co-)evaporation and (co)sputtering based fabrication methods and the electrical properties of polymer-metal nanocomposite films. Within the organic-inorganic hybrid nanocomposites research framework, the field related to metal-polymer nanocomposites is attracting much interest. In fact, [...] Read more.
In this review, we discuss the basic concepts related to (co-)evaporation and (co)sputtering based fabrication methods and the electrical properties of polymer-metal nanocomposite films. Within the organic-inorganic hybrid nanocomposites research framework, the field related to metal-polymer nanocomposites is attracting much interest. In fact, it is opening pathways for engineering flexible composites that exhibit advantageous electrical, optical, or mechanical properties. The metal-polymer nanocomposites research field is, now, a wide, complex, and important part of the nanotechnology revolution. So, with this review we aim, starting from the discussion of specific cases, to focus our attention on the basic microscopic mechanisms and processes and the general concepts suitable for the interpretation of material properties and structure–property correlations. The review aims, in addition, to provide a comprehensive schematization of the main technological applications currently in development worldwide. Full article
(This article belongs to the Special Issue Multifunctional Organic-Inorganic Hybrid Thin Films and Coatings)
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