Special Issue "Nanoparticles in Metal-Organic Frameworks"

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

Deadline for manuscript submissions: closed (30 June 2017)

Special Issue Editors

Guest Editor
Dr. Patricia Horcajada

IMDEA Energy Institute, Mostoles-Madrid, Spain
Website | E-Mail
Phone: +34 91737 11 20 (ext. 209)
Fax: +34 91737 11 40
Interests: porous materials; metal organic frameworks; nanotechnology; shaping; adsorption; energy; health
Guest Editor
Dr. Sergio M. F. Vilela

IMDEA Energy Institute, Mostoles-Madrid, Spain
Website | E-Mail
Phone: +34 91737 11 20 (ext. 206)
Fax: +34 91737 11 40
Interests: metal organic frameworks; phosphonates; nanoparticles; energy devices; separation

Special Issue Information

Dear Colleagues,

Every day, worldwide, scientists face ambitious challenges in the design and development of novel functional and robust materials/devices to answer important social needs. Thousands of papers have been published every year, reporting the latest advances in distinct areas, such as biomedicine, energy, capture of hazardous species, fluid storage/separation, and sensing, among many others. Metal-Organic Frameworks (MOFs), also known as Porous Coordination Polymers (PCPs), are the last class of porous materials with remarkable intrinsic properties (e.g., high regular porosity, easily tuneable hybrid composition, thermal, chemical and mechanical stability), which make them promising candidates to cover some of the aforementioned necessities. In particular, down-sizing MOFs to nanoscale boosts the development of MOF-based devices and confers these materials with different properties to those of the bulk counterparts, enabling new applications.

This Special Issue of Nanomaterials compiles recent innovative scientific works describing the state-of-the-art of nano-sized MOFs (nanoMOFs). The readers will find relevant information regarding synthetic approaches, characterization tools, properties and potential applications of nanoMOF structures and composites/devices.

Dr. Patricia Horcajada
Dr. Sérgio Vilela
Guest Editors

Manuscript Submission Information

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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

  • Downsizing Metal-Organic Frameworks (MOFs)
  • Composite based on nanometric MOFs
  • Shaped nanoscaled MOFs
  • Functional nanoMOFs
  • Relevant applications of nanoMOFs

Published Papers (4 papers)

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Research

Open AccessFeature PaperArticle Nanometric MIL-125-NH2 Metal–Organic Framework as a Potential Nerve Agent Antidote Carrier
Nanomaterials 2017, 7(10), 321; doi:10.3390/nano7100321
Received: 21 July 2017 / Revised: 29 September 2017 / Accepted: 6 October 2017 / Published: 12 October 2017
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Abstract
The three-dimensional (3D) microporous titanium aminoterephthalate MIL-125-NH2 (MIL: Material of Institut Lavoisier) was successfully isolated as monodispersed nanoparticles, which are compatible with intravenous administration, by using a simple, safe and low-cost synthetic approach (100 °C/32 h under atmospheric pressure) so that for
[...] Read more.
The three-dimensional (3D) microporous titanium aminoterephthalate MIL-125-NH2 (MIL: Material of Institut Lavoisier) was successfully isolated as monodispersed nanoparticles, which are compatible with intravenous administration, by using a simple, safe and low-cost synthetic approach (100 °C/32 h under atmospheric pressure) so that for the first time it could be considered for encapsulation and the release of drugs. The nerve agent antidote 2-[(hydroxyimino)methyl]-1-methyl-pyridinium chloride (2-PAM or pralidoxime) was effectively encapsulated into the pores of MIL-125-NH2 as a result of the interactions between 2-PAM and the pore walls being mediated by π-stacking and hydrogen bonds, as deduced from infrared spectroscopy and Monte Carlo simulation studies. Finally, colloidal solutions of MIL-125-NH2 nanoparticles exhibited remarkable stability in different organic media, aqueous solutions at different pH and under relevant physiological conditions over time (24 h). 2-PAM was rapidly released from the pores of MIL-125-NH2 in vitro. Full article
(This article belongs to the Special Issue Nanoparticles in Metal-Organic Frameworks)
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Open AccessArticle The Tuning of Optical Properties of Nanoscale MOFs-Based Thin Film through Post-Modification
Nanomaterials 2017, 7(9), 242; doi:10.3390/nano7090242
Received: 22 July 2017 / Revised: 17 August 2017 / Accepted: 22 August 2017 / Published: 29 August 2017
PDF Full-text (4828 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Optical properties, which determine the application of optical devices in different fields, are the most significant properties of optical thin films. In recent years, Metal-organic framework (MOF)-based optical thin films have attracted increasing attention because of their novel optical properties and important potential
[...] Read more.
Optical properties, which determine the application of optical devices in different fields, are the most significant properties of optical thin films. In recent years, Metal-organic framework (MOF)-based optical thin films have attracted increasing attention because of their novel optical properties and important potential applications in optical and photoelectric devices, especially optical thin films with tunable optical properties. This study reports the first example of tuning the optical properties of a MOF-based optical thin film via post-modification. The MOF-based optical thin film was composed of NH2-MIL-53(Al) nanorods (NRs) (MIL: Materials from Institute Lavoisier), and was constructed via a spin-coating method. Three aldehydes with different lengths of carbon chains were chosen to modify the MOF optical thin film to tune their optical properties. After post-modification, the structural color of the NH2-MIL-53(Al) thin film showed an obvious change from purple to bluish violet and cyan. The reflection spectrum and the reflectivity also altered in different degrees. The effective refractive index (neff) of MOFs thin film can also be tuned from 1.292 to 1.424 at a wavelength of 750 nm. The success of tuning of the optical properties of MOFs thin films through post-modification will make MOFs optical thin films meet different needs of optical properties in various optical and optoelectronic devices. Full article
(This article belongs to the Special Issue Nanoparticles in Metal-Organic Frameworks)
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Open AccessFeature PaperArticle Application of Metal-Organic Framework Nano-MIL-100(Fe) for Sustainable Release of Doxycycline and Tetracycline
Nanomaterials 2017, 7(8), 215; doi:10.3390/nano7080215
Received: 30 June 2017 / Revised: 1 August 2017 / Accepted: 1 August 2017 / Published: 6 August 2017
Cited by 1 | PDF Full-text (6633 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Nanostructures of MIL-100 were synthesized and used as a drug delivery platform for two members of the Tetracycline family. Doxycycline monohydrate (DOX) and Tetracycline hydrochloride (TC) were loaded separately on nano-MIL-100 (nanoparticles of drug@carrier were abbreviated as DOX@MIL-100 and TC@MIL-100). Characterizations were carried
[...] Read more.
Nanostructures of MIL-100 were synthesized and used as a drug delivery platform for two members of the Tetracycline family. Doxycycline monohydrate (DOX) and Tetracycline hydrochloride (TC) were loaded separately on nano-MIL-100 (nanoparticles of drug@carrier were abbreviated as DOX@MIL-100 and TC@MIL-100). Characterizations were carried out using FT-IR, XRD, BET, DLS, and SEM. The FT-IR spectra revealed that the drugs were loaded into the framework of the carrier. The XRD patterns of DOX@MIL-100 and TC@MIL-100 indicated that no free DOX or TC were present. It could be concluded that the drugs are well dispersed into the pores of nano-MIL-100. The microporosity of the carrier was confirmed by BJH data. BET analysis showed a reduction in the free surface for both DOX@MIL-100 and TC@MIL-100. The release of TC and DOX was investigated, and it was revealed that MIL-100 mediated the drug solubility in water, which in turn resulted in a decrease in the release rate of TC (accelerating in DOX case) without lowering the total amount of released drug. After 48 h, 96 percent of the TC was sustain released, which is an unprecedented amount in comparison with other methods. Full article
(This article belongs to the Special Issue Nanoparticles in Metal-Organic Frameworks)
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Open AccessFeature PaperArticle A Recyclable Cu-MOF-74 Catalyst for the Ligand-Free O-Arylation Reaction of 4-Nitrobenzaldehyde and Phenol
Nanomaterials 2017, 7(6), 149; doi:10.3390/nano7060149
Received: 3 May 2017 / Revised: 8 June 2017 / Accepted: 9 June 2017 / Published: 16 June 2017
Cited by 1 | PDF Full-text (7102 KB) | HTML Full-text | XML Full-text
Abstract
The activity and recyclability of Cu-MOF-74 as a catalyst was studied for the ligand-free C–O cross-coupling reaction of 4-nitrobenzaldehyde (NB) with phenol (Ph) to form 4-formyldiphenyl ether (FDE). Cu-MOF-74 is characterized by having unsaturated copper sites in a highly porous metal-organic framework. The
[...] Read more.
The activity and recyclability of Cu-MOF-74 as a catalyst was studied for the ligand-free C–O cross-coupling reaction of 4-nitrobenzaldehyde (NB) with phenol (Ph) to form 4-formyldiphenyl ether (FDE). Cu-MOF-74 is characterized by having unsaturated copper sites in a highly porous metal-organic framework. The influence of solvent, reaction temperature, NB/Ph ratio, catalyst concentration, and basic agent (type and concentration) were evaluated. High conversions were achieved at 120 °C, 5 mol % of catalyst, NB/Ph ratio of 1:2, DMF as solvent, and 1 equivalent of K2CO3 base. The activity of Cu-MOF-74 material was higher than other ligand-free copper catalytic systems tested in this study. This catalyst was easily separated and reused in five successive runs, achieving a remarkable performance without significant porous framework degradation. The leaching of copper species in the reaction medium was negligible. The O-arylation between NB and Ph took place only in the presence of Cu-MOF-74 material, being negligible without the solid catalyst. The catalytic advantages of using nanostructured Cu-MOF-74 catalyst were also proven. Full article
(This article belongs to the Special Issue Nanoparticles in Metal-Organic Frameworks)
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