Organic-Inorganic Hybrid Nanomaterials

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

Deadline for manuscript submissions: closed (1 September 2018) | Viewed by 46689

Special Issue Editor

N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia
Interests: organic synthesis; catalysis; molecular complexity; biological activity
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is a great pleasure for me to invite you to submit a manuscript to the Special Issue "Organic–Inorganic Hybrid Nanomaterials", which will be published in the journal Nanomaterials.

This Special Issue targets interdisciplinary state-of-the-art research articles, communications, and reviews. Two rapidly developing vectors are currently emerging in hybrid systems studies: stable and transient hybrid systems. Combining individual contributions from these areas will allow us to produce a most impactful journal issue:

1) Stable hybrid systems

Hybrid nanomaterials that contain organic components (organic groups or molecules, ligands, biomolecules, pharmaceutical substances, polymers, etc.) and inorganic components (metal ions, metal clusters or particles, salts, oxides, sulfides, non-metallic elements and their derivatives, etc.) play a paramount role in contemporary research. Advanced molecular architectures based on hybrid nanomaterials admittedly provide an outstanding driving force for the active progress in several research areas, including the development of new platforms for drug delivery, smart and stimuli-responsive materials, sensors, as well as nanomedicine, industrial technologies, material sciences, and energy applications.

2) Transient hybrid systems

Linking organic molecules to metal nanoparticles may create highly reactive hybrid organic–inorganic systems. Despite the short lifetime of such nanostructures, they ensure facile chemical activation of organic molecules. Their key applications arise in the fields of catalysis and organic synthesis, where nanomaterials are currently promoting a new wave of highly active and selective catalyst development. Top-notch scientific reports on nanoparticle catalysis, dynamic catalysis or “сocktail-type” catalysis are highly welcomed and definitely fall within the scope of this Special Issue.

Thus, submissions regarding Stable hybrid systems or Transient hybrid systems are cordially invited.

Please note that Nanomaterials is an open access journal, and the whole Special Issue will be freely available for all readers across the world. Information about open access options and conditions is provided at the journal website.

Prof. Dr. Valentine P. Ananikov
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 submissions that pass pre-check are 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 semimonthly 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 2900 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

  • hybrid nanomaterials
  • organic nanomaterials
  • inorganic nanoparticles
  • composite materials
  • nanomaterials for catalysis
  • polymeric nanomaterials

Published Papers (8 papers)

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Editorial

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6 pages, 202 KiB  
Editorial
Organic–Inorganic Hybrid Nanomaterials
by Valentine P. Ananikov
Nanomaterials 2019, 9(9), 1197; https://doi.org/10.3390/nano9091197 - 26 Aug 2019
Cited by 85 | Viewed by 7601
Abstract
The paramount progress in the field of organic–inorganic hybrid nanomaterials was stimulated by numerous applications in chemistry, physics, life sciences, medicine, and technology. Currently, in the field of hybrid materials, researchers may choose either to mimic complex natural materials or to compete with [...] Read more.
The paramount progress in the field of organic–inorganic hybrid nanomaterials was stimulated by numerous applications in chemistry, physics, life sciences, medicine, and technology. Currently, in the field of hybrid materials, researchers may choose either to mimic complex natural materials or to compete with nature by constructing new artificial materials. The deep mechanistic understanding and structural insight achieved in recent years will guide a new wave in the design of hybrid materials at the atomic and molecular levels. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)

Research

Jump to: Editorial

17 pages, 5856 KiB  
Article
Supramolecular Organogels Based on N-Benzyl, N′-Acylbispidinols
by Alexey V. Medved’ko, Alexander I. Dalinger, Vyacheslav N. Nuriev, Vera S. Semashko, Andrei V. Filatov, Alexander A. Ezhov, Andrei V. Churakov, Judith A. K. Howard, Andrey A. Shiryaev, Alexander E. Baranchikov, Vladimir K. Ivanov and Sergey Z. Vatsadze
Nanomaterials 2019, 9(1), 89; https://doi.org/10.3390/nano9010089 - 11 Jan 2019
Cited by 10 | Viewed by 4664
Abstract
The acylation of unsymmetrical N-benzylbispidinols in aromatic solvents without an external base led to the formation of supramolecular gels, which possess different thicknesses and degrees of stability depending on the substituents in para-positions of the benzylic group as well as on the [...] Read more.
The acylation of unsymmetrical N-benzylbispidinols in aromatic solvents without an external base led to the formation of supramolecular gels, which possess different thicknesses and degrees of stability depending on the substituents in para-positions of the benzylic group as well as on the nature of the acylating agent and of the solvent used. Structural features of the native gels as well as of their dried forms were studied by complementary techniques including Fourier-transform infrared (FTIR) and attenuated total reflection (ATR) spectroscopy, atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and small-angle X-ray scattering and diffraction (SAXS). Structures of the key crystalline compounds were established by X-ray diffraction. An analysis of the obtained data allowed speculation on the crucial structural and condition factors that governed the gel formation. The most important factors were as follows: (i) absence of base, either external or internal; (ii) presence of HCl; (iii) presence of carbonyl and hydroxyl groups to allow hydrogen bonding; and (iv) presence of two (hetero)aromatic rings at both sides of the molecule. The hydrogen bonding involving amide carbonyl, hydroxyl at position 9, and, very probably, ammonium N-H+ and Cl anion appears to be responsible for the formation of infinite molecular chains required for the first step of gel formation. Subsequent lateral cooperation of molecular chains into fibers occurred, presumably, due to the aromatic π−π-stacking interactions. Supercritical carbon dioxide drying of the organogels gave rise to aerogels with morphologies different from that of air-dried samples. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)
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18 pages, 8180 KiB  
Article
Systematic Study of the Behavior of Different Metal and Metal-Containing Particles under the Microwave Irradiation and Transformation of Nanoscale and Microscale Morphology
by Evgeniy O. Pentsak, Vera A. Cherepanova, Mikhail A. Sinayskiy, Andrey V. Samokhin and Valentine P. Ananikov
Nanomaterials 2019, 9(1), 19; https://doi.org/10.3390/nano9010019 - 24 Dec 2018
Cited by 11 | Viewed by 3256
Abstract
In recent years, the application of microwave (MW) irradiation has played an increasingly important role in the synthesis and development of high performance nanoscale catalytic systems. However, the interaction of microwave irradiation with solid catalytic materials and nanosized structures remains a poorly studied [...] Read more.
In recent years, the application of microwave (MW) irradiation has played an increasingly important role in the synthesis and development of high performance nanoscale catalytic systems. However, the interaction of microwave irradiation with solid catalytic materials and nanosized structures remains a poorly studied topic. In this paper we carried out a systematic study of changes in morphology under the influence of microwave irradiation on nanoscale particles of various metals and composite particles, including oxides, carbides, and neat metal systems. All systems were studied in the native solid form without a solvent added. Intensive absorption of microwave radiation was observed for many samples, which in turn resulted in strong heating of the samples and changes in their chemical structure and morphology. A comparison of two very popular catalytic materials—metal particles (M) and supported metal on carbon (M/C) systems—revealed a principal difference in their behavior under microwave irradiation. The presence of carbon support influences the heating mechanism; the interaction of substances with the support during the heating is largely determined by heat transfer from the carbon. Etching of the carbon surface, involving the formation of trenches and pits on the surface of the carbon support, were observed for various types of the investigated nanoparticles. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)
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16 pages, 2964 KiB  
Article
Highly-Ordered PdIn Intermetallic Nanostructures Obtained from Heterobimetallic Acetate Complex: Formation and Catalytic Properties in Diphenylacetylene Hydrogenation
by Igor S. Mashkovsky, Pavel V. Markov, Galina O. Bragina, Galina N. Baeva, Alexander V. Rassolov, Ilya A. Yakushev, Michael N. Vargaftik and Alexander Yu. Stakheev
Nanomaterials 2018, 8(10), 769; https://doi.org/10.3390/nano8100769 - 28 Sep 2018
Cited by 20 | Viewed by 4210
Abstract
Formation of PdIn intermetallic nanoparticles supported on α-Al2O3 was investigated by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and hydrogen temperature-programmed desorption (H2-TPD) methods. The metals were loaded as heterobimetallic Pd(μ-O2CMe)4In(O2CMe) [...] Read more.
Formation of PdIn intermetallic nanoparticles supported on α-Al2O3 was investigated by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and hydrogen temperature-programmed desorption (H2-TPD) methods. The metals were loaded as heterobimetallic Pd(μ-O2CMe)4In(O2CMe) complex to ensure intimate contact between Pd and In. Reduction in H2 at 200 °C resulted in Pd-rich PdIn alloy as evidenced by XRD and the disappearance of Pd hydride. A minor amount of Pd1In1 intermetallic phase appeared after reduction at 200 °C and its formation was accomplished at 400 °C. Neither monometallic Pd or in nor other intermetallic structures were found after reduction at 400–600 °C. Catalytic performance of Pd1In1/α-Al2O3 was studied in the selective liquid-phase diphenylacetylene (DPA) hydrogenation. It was found that the reaction rate of undesired alkene hydrogenation is strongly reduced on Pd1In1 nanoparticles enabling effective kinetic control of the hydrogenation, and the catalyst demonstrated excellent selectivity to alkene. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)
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16 pages, 7563 KiB  
Article
Photosensitive Organic-Inorganic Hybrid Materials for Room Temperature Gas Sensor Applications
by Marina Rumyantseva, Abulkosim Nasriddinov, Svetlana Vladimirova, Sergey Tokarev, Olga Fedorova, Ivan Krylov, Konstantin Drozdov, Alexander Baranchikov and Alexander Gaskov
Nanomaterials 2018, 8(9), 671; https://doi.org/10.3390/nano8090671 - 29 Aug 2018
Cited by 18 | Viewed by 4938
Abstract
In this work, the hybrids based on nanocrystalline SnO2 or In2O3 semiconductor matrixes and heterocyclic Ru(II) complex are studied as materials for gas sensors operating at room temperature under photoactivation with visible light. Nanocrystalline semiconductor oxides are obtained by [...] Read more.
In this work, the hybrids based on nanocrystalline SnO2 or In2O3 semiconductor matrixes and heterocyclic Ru(II) complex are studied as materials for gas sensors operating at room temperature under photoactivation with visible light. Nanocrystalline semiconductor oxides are obtained by chemical precipitation with subsequent thermal annealing and characterized by XRD, SEM and single-point BET methods. The heterocyclic Ru(II) complex is synthesized for the first time and investigated by 1H NMR, 13C NMR APT, MALDI-MS analysis, and UV-Vis spectroscopy. The HOMO and LUMO energies of the Ru(II) complex are calculated from cyclic voltammetry data. The hybrid materials are characterized by TGA-MS analysis and EDX mapping. The optical properties of hybrids are studied by UV-Vis spectroscopy in the diffuse reflection mode. The investigation of spectral dependencies of photoconductivity of hybrid samples demonstrates that the role of organic dye consists in shifting the photosensitivity range towards longer wavelengths. Sensor measurements demonstrate that hybrid materials are able to detect NO2 in the concentration range of 0.25–2 ppm without the use of thermal heating under periodic illumination with even low-energy long-wavelength (red) light. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)
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18 pages, 7244 KiB  
Article
Effect of Phenolic Compounds on the Synthesis of Gold Nanoparticles and its Catalytic Activity in the Reduction of Nitro Compounds
by Elisabete C. B. A. Alegria, Ana P. C. Ribeiro, Marta Mendes, Ana M. Ferraria, Ana M. Botelho Do Rego and Armando J. L. Pombeiro
Nanomaterials 2018, 8(5), 320; https://doi.org/10.3390/nano8050320 - 10 May 2018
Cited by 70 | Viewed by 7446
Abstract
Gold nanoparticles (AuNPs) were prepared using an eco-friendly approach in a single step by reduction of HAuCl4 with polyphenols from tea extracts, which act as both reducing and capping agents. The obtained AuNPs were characterized by scanning electron microscopy (SEM), transmission electron [...] Read more.
Gold nanoparticles (AuNPs) were prepared using an eco-friendly approach in a single step by reduction of HAuCl4 with polyphenols from tea extracts, which act as both reducing and capping agents. The obtained AuNPs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet–visible spectroscopy (UV–vis), and X-ray photoelectron spectroscopy (XPS). They act as highly efficient catalysts in the reduction of various aromatic nitro compounds in aqueous solution. The effects of a variety of factors (e.g., reaction time, type and amount of reducing agent, shape, size, or amount of AuNPs) were studied towards the optimization of the processes. The total polyphenol content (TPC) was determined before and after the catalytic reaction and the results are discussed in terms of the tea extract percentage, the size of the AuNPs, and their catalytic activity. The reusability of the AuNP catalyst in the reduction of 4-nitrophenol was also tested. The reactions follow pseudo first-order kinetics. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)
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10 pages, 14159 KiB  
Article
Synthesis of Iron Oxide/Gold Composite Nanoparticles Using Polyethyleneimine as a Polymeric Active Stabilizer for Development of a Dual Imaging Probe
by Gyu Jin Yoon, So Young Lee, Seung Bin Lee, Ga Young Park and Jin Hyun Choi
Nanomaterials 2018, 8(5), 300; https://doi.org/10.3390/nano8050300 - 05 May 2018
Cited by 11 | Viewed by 4769
Abstract
The combination of magnetic and plasmonic properties using iron oxide/gold nanocomposite particles is crucial for the development of multimodal molecular imaging probes. In this study, iron oxide/gold composite nanoparticles (NanoIOGs) were synthesized via the on-site reduction of an Au precursor salt by polyethyleneimine [...] Read more.
The combination of magnetic and plasmonic properties using iron oxide/gold nanocomposite particles is crucial for the development of multimodal molecular imaging probes. In this study, iron oxide/gold composite nanoparticles (NanoIOGs) were synthesized via the on-site reduction of an Au precursor salt by polyethyleneimine (PEI) molecules attached to iron oxide nanoparticles (IONPs), and they were employed in magnetic resonance and dark-field microscope imaging. PEI is considered as a polymeric active stabilizer (PAS), acting as a reducing agent for the synthesis of Au and a dispersant for nanoparticles. When the IONPs prepared at the PEI concentration of 0.02 wt. % were used for the NanoIOG synthesis, Au nanoseeds were formed around the IONPs. The alloy clusters of IONPs/Au crystals were produced with further reduction depending on PEI concentration. The NanoIOGs exhibited superparamagnetism in a magnetic field and plasmonic response in a dark-field (DF) microscope. The sizes, morphologies, magnetizations, and r2 relaxivities of NanoIOGs were affected significantly by the amount of PEI added during the NanoIOG synthesis. It is suggested that the PAS-mediated synthesis is simple and effective, and can be applied to various nanostructured Au-metal alloys. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)
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17 pages, 19829 KiB  
Article
Hybrid Drug Delivery Patches Based on Spherical Cellulose Nanocrystals and Colloid Titania—Synthesis and Antibacterial Properties
by Olga L. Evdokimova, Fredric G. Svensson, Alexander V. Agafonov, Sebastian Håkansson, Gulaim A. Seisenbaeva and Vadim G. Kessler
Nanomaterials 2018, 8(4), 228; https://doi.org/10.3390/nano8040228 - 08 Apr 2018
Cited by 53 | Viewed by 8643
Abstract
Spherical cellulose nanocrystal-based hybrids grafted with titania nanoparticles were successfully produced for topical drug delivery. The conventional analytical filter paper was used as a precursor material for cellulose nanocrystals (CNC) production. Cellulose nanocrystals were extracted via a simple and quick two-step process based [...] Read more.
Spherical cellulose nanocrystal-based hybrids grafted with titania nanoparticles were successfully produced for topical drug delivery. The conventional analytical filter paper was used as a precursor material for cellulose nanocrystals (CNC) production. Cellulose nanocrystals were extracted via a simple and quick two-step process based on first the complexation with Cu(II) solution in aqueous ammonia followed by acid hydrolysis with diluted H2SO4. Triclosan was selected as a model drug for complexation with titania and further introduction into the nanocellulose based composite. Obtained materials were characterized by a broad variety of microscopic, spectroscopic, and thermal analysis methods. The drug release studies showed long-term release profiles of triclosan from the titania based nanocomposite that agreed with Higuchi model. The bacterial susceptibility tests demonstrated that released triclosan retained its antibacterial activity against Escherichia coli and Staphylococcus aureus. It was found that a small amount of titania significantly improved the antibacterial activity of obtained nanocomposites, even without immobilization of model drug. Thus, the developed hybrid patches are highly promising candidates for potential application as antibacterial agents. Full article
(This article belongs to the Special Issue Organic-Inorganic Hybrid Nanomaterials)
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