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Liu T, Holzapfel NP, Woodward PM. Understanding structural distortions in hybrid layered perovskites with the n = 1 Ruddlesden-Popper structure. IUCrJ 2023; 10:S2052252523003743. [PMID: 37307102 DOI: 10.1107/s2052252523003743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 04/25/2023] [Indexed: 06/14/2023]
Abstract
A symmetry mode analysis yields 47 symmetrically distinct patterns of octahedral tilting in hybrid organic-inorganic layered perovskites that adopt the n = 1 Ruddlesden-Popper (RP) structure. The crystal structures of compounds belonging to this family are compared with the predictions of the symmetry analysis. Approximately 88% of the 140 unique structures have symmetries that agree with those expected based on octahedral tilting alone, while the remaining compounds have additional structural features that further lower the symmetry, such as asymmetric packing of bulky organic cations, distortions of metal-centered octahedra or a shift of the inorganic layers that deviates from the a/2 + b/2 shift associated with the RP structure. The structures of real compounds are heterogeneously distributed amongst the various tilt systems, with only 9 of the 47 tilt systems represented. No examples of in-phase ψ-tilts about the a and/or b axes of the undistorted parent structure were found, while at the other extreme ∼66% of the known structures possess a combination of out-of-phase φ-tilts about the a and/or b axes and θ-tilts (rotations) about the c axis. The latter combination leads to favorable hydrogen bonding interactions that accommodate the chemically inequivalent halide ions within the inorganic layers. In some compounds, primarily those that contain either Pb2+ or Sn2+, favorable hydrogen bonding interactions can also be achieved by distortions of the octahedra in combination with θ-tilts.
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Affiliation(s)
- Tianyu Liu
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Noah P Holzapfel
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
| | - Patrick M Woodward
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
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2
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McCabe EE. Functional materials design: octahedral tilts in hybrid n = 1 Ruddlesden-Popper phases. IUCrJ 2023; 10:382-384. [PMID: 37409805 DOI: 10.1107/s2052252523005559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
The exciting properties offered by hybrid perovskite-related materials have motivated Liu et al. [(2023). IUCrJ, 10, 385-396] to explore the crystallography of hybrid n = 1 Ruddlesden-Popper phases. Their investigation explores the structures (and symmetries) expected to result from typical distortions and gives design strategies to target specific symmetries.
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Affiliation(s)
- Emma E McCabe
- Durham University, Lower Mountjoy, South Road, Durham, DH1 3LE, United Kingdom
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3
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Shang X, Men X, Kuang Q, Li S, Li D, Zhang Z. Controllable Connection of Fe 2Se 3 Double Chains and Fe(dien) 2 Complexes for Organic-Inorganic Hybrid Ferrimagnet with a Large Coercivity. Nanomaterials (Basel) 2023; 13:487. [PMID: 36770448 PMCID: PMC9919023 DOI: 10.3390/nano13030487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 01/16/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Organic-inorganic hybrid materials built by inorganic and organic building units have attracted intensive interest in the past decades due to unique chemical and physical properties. However, rare organic-inorganic hybrid materials show excellent permanent magnetic properties. Here, we develop a facile chemical solution method to bottom-up synthesize a new hybrid (Fe2Se3)2[Fe(dien)2]0.9. This hybrid phase with the space group P21/c (14) possesses a rodlike shape with a diameter of 100-2000 nm and a length of 5-50 µm. The hybrid rods are ferrimagnetic with a Curie temperature (TC) of 11 K. They show a high coercivity (HC) of 4.67 kOe and a saturation magnetization (MS) of 13.5 emu/g at 2 K. Compared with orthorhombic (FeSe2)2Fe(dien)2, the excellent magnetic performance of the hybrid rods is ascribed to the monoclinic hybrid structure built by Fe(dien)2 complexes and Fe2Se3 double chains. Our study provides guidance for connecting inorganic fragments of FeSe2 single chains, Fe2Se3 double chains or β-Fe3Se4 layers with Fe(dien)2 complexes for organic-inorganic hybrid phases with varied crystal structures and magnetic properties.
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Affiliation(s)
- Xiaolei Shang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Xiaoling Men
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Qifeng Kuang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Shaojie Li
- Instrumental Analysis and Research Center, Dalian University of Technology, Panjin 124221, China
| | - Da Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Zhidong Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
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Barros RM, Da Silva CG, Nicolau Costa KM, Da Silva-Junior AA, Scardueli CR, Marcantonio RAC, Chiavacci LA, Oshiro-Junior JA. Dexamethasone-Loaded Ureasil Hydrophobic Membrane for Bone Guided Regeneration. Pharmaceutics 2022; 14:1027. [PMID: 35631613 PMCID: PMC9146579 DOI: 10.3390/pharmaceutics14051027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 01/09/2023] Open
Abstract
Physical barrier membranes have been used to release active substances to treat critical bone defects; however, hydrophilic membranes do not present a prolonged release capacity. In this sense, hydrophobic membranes have been tested. Thus, this study aimed to develop hydrophobic membranes based on mixtures of ureasil-polyether-type materials containing incorporated dexamethasone (DMA) for the application in guided bone regeneration. The physicochemical characterization and biological assays were carried out using small-angle X-ray scattering (SAXS), an in vitro DMA release study, atomic force microscopy (AFM), a hemolysis test, and in vivo bone formation. The swelling degree, SAXS, and release results revealed that the u-PPO400/2000 membrane in the proportion of 70:30 showed swelling (4.69% ± 0.22) similar to the proportions 90:10 and 80:20, and lower than the proportion 60:40 (6.38% ± 0.49); however, an equal release percentage after 134 h was observed between the proportions 70:30 and 60:40. All u-PPO materials presented hemocompatibility (hemolysis ≤2.8%). AFM results showed that the treatments with or without DMA did not present significant differences, revealing a flat/smooth surface, with no pores and/or crystalline precipitates. Finally, in vivo results revealed that for both the commercial hydrophilic membrane and u-PPO400/2000 (70:30) after 60 days, the bone formation volume was 21%. In conclusion, hybrid membranes present unique characteristics for treating critical bone defects, considering the delayed and prolonged release results associated with the physical barrier capacity.
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Affiliation(s)
- Rafaella Moreno Barros
- Pharmaceutical Sciences Postgraduate Center for Biological and Health Sciences, State University of Paraíba, Av. Juvêncio Arruda, S/N, Campina Grande 58429-600, Paraíba, Brazil; (R.M.B.); (K.M.N.C.)
| | - Camila Garcia Da Silva
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Highway Araraquara-Jaú, Araraquara 14801-902, São Paulo, Brazil;
| | - Kammila Martins Nicolau Costa
- Pharmaceutical Sciences Postgraduate Center for Biological and Health Sciences, State University of Paraíba, Av. Juvêncio Arruda, S/N, Campina Grande 58429-600, Paraíba, Brazil; (R.M.B.); (K.M.N.C.)
| | - Arnóbio A. Da Silva-Junior
- Department of Pharmacy, Federal University of Rio Grande do Norte-UFRN, Natal 59012-570, Rio Grande do Norte, Brazil;
| | - Cássio Rocha Scardueli
- Faculty of Dentistry, São Paulo State University (UNESP), Araraquara 14801-385, São Paulo, Brazil; (C.R.S.); (R.A.C.M.)
| | | | - Leila Aparecida Chiavacci
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Highway Araraquara-Jaú, Araraquara 14801-902, São Paulo, Brazil;
| | - João Augusto Oshiro-Junior
- Pharmaceutical Sciences Postgraduate Center for Biological and Health Sciences, State University of Paraíba, Av. Juvêncio Arruda, S/N, Campina Grande 58429-600, Paraíba, Brazil; (R.M.B.); (K.M.N.C.)
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García Martínez JM, P. Collar E. On the Combined Effect of Both the Reinforcement and a Waste Based Interfacial Modifier on the Matrix Glass Transition in iPP/a-PP- pPBMA/Mica Composites. Polymers (Basel) 2020; 12:polym12112606. [PMID: 33171919 PMCID: PMC7694493 DOI: 10.3390/polym12112606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/31/2020] [Accepted: 11/03/2020] [Indexed: 11/16/2022] Open
Abstract
This work deals with the changes of the glass transition temperature (Tg) of the polymer in polypropylene/mica composites due to the combined and synergistic effect of the reinforcement and the interfacial modifier. In our case, we studied the effect on Tg of platy mica and an interfacial modifier with p-phenylen-bis-maleamic acid (pPBMA) grafted groups onto atactic polypropylene (aPP-pPBMA). This one contains 5.0 × 10-4 g·mol-1 (15% w/w) grafted pPBMA and was previously obtained by the author's labs by using industrial polymerization wastes (aPP). The objective of the article must be perceived as two-fold. On one hand, the determination of the changes in the glass transition temperature of the isotactic polypropylene phase (iPP) due to both the reinforcement and the agent as determined form the damp factor in DMA analysis. On the other hand, forecasting the variation of this parameter (Tg) as a function of both the interfacial agent and reinforcement content. For such purposes, and by assuming the complex character of the iPP/aPP-pPBMA/Mica system, wherein interaction between the components will define the final behaviour, a Box-Wilson experimental design considering the amount of mica particles and of interface agent as the independent variables, and the Tg as the dependent one, has been used. By taking in mind that the glass transition is a design threshold for the ultimate properties of parts based in this type of organic-inorganic hybrid materials, the final purpose of the work is the prediction and interpretation of the effect of both variables on this key parameter.
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Frigione M, Lettieri M. Recent Advances and Trends of Nanofilled/Nanostructured Epoxies. Materials (Basel) 2020; 13:ma13153415. [PMID: 32756362 PMCID: PMC7435812 DOI: 10.3390/ma13153415] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/21/2020] [Accepted: 07/30/2020] [Indexed: 12/26/2022]
Abstract
This paper aims at reviewing the works published in the last five years (2016–2020) on polymer nanocomposites based on epoxy resins. The different nanofillers successfully added to epoxies to enhance some of their characteristics, in relation to the nature and the feature of each nanofiller, are illustrated. The organic–inorganic hybrid nanostructured epoxies are also introduced and their strong potential in many applications has been highlighted. The different methods and routes employed for the production of nanofilled/nanostructured epoxies are described. A discussion of the main properties and final performance, which comprise durability, of epoxy nanocomposites, depending on chemical nature, shape, and size of nanoparticles and on their distribution, is presented. It is also shown why an efficient uniform dispersion of the nanofillers in the epoxy matrix, along with strong interfacial interactions with the polymeric network, will guarantee the success of the application for which the nanocomposite is proposed. The mechanisms yielding to the improved properties in comparison to the neat polymer are illustrated. The most important applications in which these new materials can better exploit their uniqueness are finally presented, also evidencing the aspects that limit a wider diffusion.
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Affiliation(s)
- Mariaenrica Frigione
- Department of Innovation Engineering, University of Salento, Prov. le Lecce-Monteroni, 73100 Lecce, Italy
- Correspondence: ; Tel.: +39-0832-297215
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Nasriddinov A, Rumyantseva M, Konstantinova E, Marikutsa A, Tokarev S, Yaltseva P, Fedorova O, Gaskov A. Effect of Humidity on Light-Activated NO and NO 2 Gas Sensing by Hybrid Materials. Nanomaterials (Basel) 2020; 10:nano10050915. [PMID: 32397437 PMCID: PMC7279420 DOI: 10.3390/nano10050915] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/27/2020] [Accepted: 04/30/2020] [Indexed: 01/25/2023]
Abstract
Air humidity is one of the main factors affecting the characteristics of semiconductor gas sensors, especially at low measurement temperatures. In this work we analyzed the influence of relative humidity on sensor properties of the hybrid materials based on the nanocrystalline SnO2 and In2O3 and Ru (II) heterocyclic complex and verified the possibility of using such materials for NO (0.25–4.0 ppm) and NO2 (0.05–1.0 ppm) detection in high humidity conditions (relative humidity (RH) = 20%, 40%, 65%, 90%) at room temperature during periodic blue (λmax = 470 nm) illumination. To reveal the reasons for the different influence of humidity on the sensors’ sensitivity when detecting NO and NO2, electron paramagnetic resonance (EPR) spectroscopy and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) investigations were undertaken. It was established that the substitution of adsorbed oxygen by water molecules causes the decrease in sensor response to NO in humid air. The influence of humidity on the interaction of sensitive materials with NO2 is determined by the following factors: the increase in charge carrier’s concentration, the decrease in the number of active sites capable of interacting with gases, and possible substitution of chemisorbed oxygen with NO2− groups.
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Affiliation(s)
- Abulkosim Nasriddinov
- Chemistry Department, Moscow State University, 119991 Moscow, Russia; (A.N.); (A.M.); (S.T.); (P.Y.); (O.F.); (A.G.)
- Faculty of Materials Science, Moscow State University, 119991 Moscow, Russia
| | - Marina Rumyantseva
- Chemistry Department, Moscow State University, 119991 Moscow, Russia; (A.N.); (A.M.); (S.T.); (P.Y.); (O.F.); (A.G.)
- Correspondence: ; Tel.: +7-495-939-5471
| | - Elizaveta Konstantinova
- Physics Department, Moscow State University, 119991 Moscow, Russia;
- Faculty of nano-, bio-, information and cognitive technologies, Moscow Institute of Physics and Technology, Dolgoprudny, 141700 Moscow Region, Russia
- National Research Center “Kurchatov Institute”, 123182 Moscow, Russia
| | - Artem Marikutsa
- Chemistry Department, Moscow State University, 119991 Moscow, Russia; (A.N.); (A.M.); (S.T.); (P.Y.); (O.F.); (A.G.)
| | - Sergey Tokarev
- Chemistry Department, Moscow State University, 119991 Moscow, Russia; (A.N.); (A.M.); (S.T.); (P.Y.); (O.F.); (A.G.)
- A.N. Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia
| | - Polina Yaltseva
- Chemistry Department, Moscow State University, 119991 Moscow, Russia; (A.N.); (A.M.); (S.T.); (P.Y.); (O.F.); (A.G.)
| | - Olga Fedorova
- Chemistry Department, Moscow State University, 119991 Moscow, Russia; (A.N.); (A.M.); (S.T.); (P.Y.); (O.F.); (A.G.)
- A.N. Nesmeyanov Institute of Organoelement Compounds RAS, 119991 Moscow, Russia
| | - Alexander Gaskov
- Chemistry Department, Moscow State University, 119991 Moscow, Russia; (A.N.); (A.M.); (S.T.); (P.Y.); (O.F.); (A.G.)
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Fillafer N, Seewald T, Schmidt-Mende L, Polarz S. Interfacial charge transfer processes in 2D and 3D semiconducting hybrid perovskites: azobenzene as photoswitchable ligand. Beilstein J Nanotechnol 2020; 11:466-479. [PMID: 32274286 PMCID: PMC7113553 DOI: 10.3762/bjnano.11.38] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
In the vast majority of studies on semiconductor particles ligands or capping agents are used that bind to the surface of the particles covering them with an electrically insulating shell. Since the transport of charge carriers and/or energy across interfaces is desirable for a variety of applications, the use of π-conjugated ligands becomes increasingly interesting. Among them are compounds that react to external stimuli. Molecular switches in particular are fascinating because the properties of the interfaces can be potentially adjusted as required. However, there is debate about how the properties of such special ligands are influenced by the presence of a semiconductor and vice versa. Here ammonium-modified azobenzene compounds were selected as prototypes for molecular switches and organic-inorganic hybrid perovskites as semiconductor materials. The class of ammonium-lead-halide phases as prototypes is peculiar because, in addition to the surface functionalization of 3D crystals, organic compounds can actually be incorporated into the crystal as 2D phases. Thus, for example, layered Ruddlesden-Popper phases are obtained. We present photoswitchable azobenzene ligands with different head-group lengths for the synthesis of 2D and 3D hybrid perovskite phases. The energy transfer mechanisms are influenced by the length of the molecular spacer moiety, which determines the distance between the π system and the semiconductor surfaces. We find huge differences in the photoswitching behaviour between the free, surface-coordinated and integrated ligands between the perovskite layers. Photoswitching of azobenzene ligands incorporated in 2D phases is nearly quenched, while the same mechanism for surface-coordinating ligands is greatly improved, compared to the free ligands. The improvement originates from an energy transfer from perovskite to azobenzene, which is strongly distance-dependent. This study provides evidence for the photoswitching of azobenzenes as ligands of hybrid perovskites, which depends on the spacing between the chromophore and the perovskite phase.
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Affiliation(s)
- Nicole Fillafer
- University of Konstanz, Universitätsstrasse 10, 78467 Konstanz, Germany
| | - Tobias Seewald
- University of Konstanz, Universitätsstrasse 10, 78467 Konstanz, Germany
| | | | - Sebastian Polarz
- University of Konstanz, Universitätsstrasse 10, 78467 Konstanz, Germany
- Leibniz-University of Hannover, Institute of Inorganic Chemistry, Callinstrasse 9, 30167 Hannover, Germany
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Nasriddinov A, Rumyantseva M, Shatalova T, Tokarev S, Yaltseva P, Fedorova O, Khmelevsky N, Gaskov A. Organic-Inorganic Hybrid Materials for Room Temperature Light-Activated Sub-ppm NO Detection. Nanomaterials (Basel) 2019; 10:E70. [PMID: 31905665 PMCID: PMC7023258 DOI: 10.3390/nano10010070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 12/16/2019] [Accepted: 12/24/2019] [Indexed: 11/30/2022]
Abstract
Nitric oxide (NO) is one of the main environmental pollutants and one of the biomarkers noninvasive diagnosis of respiratory diseases. Organic-inorganic hybrids based on heterocyclic Ru (II) complex and nanocrystalline semiconductor oxides SnO2 and In2O3 were studied as sensitive materials for NO detection at room temperature under periodic blue light (λmax = 470 nm) illumination. The semiconductor matrixes were obtained by chemical precipitation with subsequent thermal annealing and characterized by XRD, Raman spectroscopy, and single-point BET methods. The heterocyclic Ru (II) complex was synthesized for the first time and characterized by 1H NMR, 13C NMR, MALDI-TOF mass spectrometry and elemental analysis. The HOMO and LUMO energies of the Ru (II) complex are calculated from cyclic voltammetry data. The thermal stability of hybrids was investigated by thermogravimetric analysis (TGA)-MS analysis. The optical properties of Ru (II) complex, nanocrystalline oxides and hybrids were studied by UV-Vis spectroscopy in transmission and diffuse reflectance modes. DRIFT spectroscopy was performed to investigate the interaction between NO and the surface of the synthesized materials. Sensor measurements demonstrate that hybrid materials are able to detect NO at room temperature in the concentration range of 0.25-4.0 ppm with the detection limit of 69-88 ppb.
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Affiliation(s)
- Abulkosim Nasriddinov
- Chemistry Department, Moscow State University, Moscow 119991, Russia; (A.N.); (T.S.); (S.T.); (P.Y.); (O.F.); (A.G.)
- Faculty of Materials Science, Moscow State University, Moscow 119991, Russia
| | - Marina Rumyantseva
- Chemistry Department, Moscow State University, Moscow 119991, Russia; (A.N.); (T.S.); (S.T.); (P.Y.); (O.F.); (A.G.)
| | - Tatyana Shatalova
- Chemistry Department, Moscow State University, Moscow 119991, Russia; (A.N.); (T.S.); (S.T.); (P.Y.); (O.F.); (A.G.)
| | - Sergey Tokarev
- Chemistry Department, Moscow State University, Moscow 119991, Russia; (A.N.); (T.S.); (S.T.); (P.Y.); (O.F.); (A.G.)
- A.N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow 119991, Russia
| | - Polina Yaltseva
- Chemistry Department, Moscow State University, Moscow 119991, Russia; (A.N.); (T.S.); (S.T.); (P.Y.); (O.F.); (A.G.)
| | - Olga Fedorova
- Chemistry Department, Moscow State University, Moscow 119991, Russia; (A.N.); (T.S.); (S.T.); (P.Y.); (O.F.); (A.G.)
- A.N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow 119991, Russia
| | - Nikolay Khmelevsky
- LISM, Moscow State Technological University Stankin, Moscow 127055, Russia;
| | - Alexander Gaskov
- Chemistry Department, Moscow State University, Moscow 119991, Russia; (A.N.); (T.S.); (S.T.); (P.Y.); (O.F.); (A.G.)
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Li H, Pan J, Gao C, Ma M, Lu L, Xiong Y, Dong F. Mercapto-Functionalized Porous Organosilica Monoliths Loaded with Gold Nanoparticles for Catalytic Application. Molecules 2019; 24:molecules24234366. [PMID: 31795338 PMCID: PMC6930568 DOI: 10.3390/molecules24234366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 11/25/2022] Open
Abstract
Porous organosilica monoliths have attracted much attention from both the academic and industrial fields due to their porous structure; excellent mechanical property and easily functionalized surface. A new mercapto-functionalized silicone monolith from a precursor mixture containing methyltrimethoxysilane; 3-mercaptopropyltrimethoxysilane; and 3-mercaptopropyl(dimethoxy)methylsilane prepared via a two-step acid/base hydrolysis–polycondensation process was reported. Silane precursor ratios and surfactant type were varied to control the networks of porous monolithic gels. Gold nanoparticles were loaded onto the surface of the porous organosilica monolith (POM). Versatile characterization techniques were utilized to investigate the properties of the synthesized materials with and without gold nanoparticles. Scanning electron microscopy was used to investigate the morphology of the as-synthesized porous monolith materials. Fourier transform infrared spectroscopy was applied to confirm the surface chemistry. 29Si nuclear magnetic resonance was used to investigate the hydrolysis and polycondensation of organosilane precursors. Transmission electron microscopy was carried out to prove the existence of well-dispersed gold nanoparticles on the porous materials. Ultraviolet–visible spectroscopy was utilized to evaluate the high catalytic performance of the as-synthesized Au/POM particles
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Affiliation(s)
- Hongwei Li
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Junhui Pan
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Chengtao Gao
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
- National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang 550025, China
| | - Mengyu Ma
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Liangyu Lu
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Yuzhu Xiong
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
| | - Fuping Dong
- Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China; (H.L.); (J.P.); (C.G.); (M.M.); (L.L.); (Y.X.)
- Correspondence: ; Tel.: +86-155-1903-7121
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Zhang G, Naha PC, Gautam P, Cormode DP, Chan JMW. Water-Dispersible Bismuth-Organic Materials with Computed Tomography Contrast Properties. ACS Appl Bio Mater 2018; 1:1918-1926. [PMID: 31396587 PMCID: PMC6687070 DOI: 10.1021/acsabm.8b00488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Two bismuth-organic network polymers were synthesized by means of a one-step polycondensation reaction between an aromatic dithiol/trithiol and triphenylbismuth. The materials were characterized by solid-state UV-vis spectroscopy, Raman spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, powder X-ray diffraction, elemental microanalysis, and thermogravimetric analysis. Uniform dispersion of the hydrophobic and water-insoluble bismuth-containing polymers in aqueous media was achieved by the addition of 2 kDa poly(ethylene glycol) methyl ether thiol. This enabled quantitative phantom imaging experiments on a clinical computed tomography (CT) scanner, which showed that the coordination polymers possessed strong CT contrast properties. The observed X-ray attenuation properties of each coordination polymer were correlated with its bismuth payload. The X-ray opacity, thermal and chemical stabilities, and aqueous dispersibility of this novel class of bismuth-organic materials make them potentially useful as biomedical CT contrast agents and radiopaque materials.
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Affiliation(s)
- Guoxian Zhang
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario K1N 6N5, Canada
| | - Pratap C. Naha
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Prabhat Gautam
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario K1N 6N5, Canada
| | - David P. Cormode
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Julian M. W. Chan
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Pvt., Ottawa, Ontario K1N 6N5, Canada
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Rumyantseva M, Nasriddinov A, Vladimirova S, Tokarev S, Fedorova O, Krylov I, Drozdov K, Baranchikov A, Gaskov A. Photosensitive Organic-Inorganic Hybrid Materials for Room Temperature Gas Sensor Applications. Nanomaterials (Basel) 2018; 8:E671. [PMID: 30158451 DOI: 10.3390/nano8090671] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/22/2018] [Accepted: 08/28/2018] [Indexed: 01/22/2023]
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 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.
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Maietta S, Russo T, Santis RD, Ronca D, Riccardi F, Catauro M, Martorelli M, Gloria A. Further Theoretical Insight into the Mechanical Properties of Polycaprolactone Loaded with Organic-Inorganic Hybrid Fillers. Materials (Basel) 2018; 11:ma11020312. [PMID: 29466299 PMCID: PMC5849009 DOI: 10.3390/ma11020312] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 02/14/2018] [Accepted: 02/17/2018] [Indexed: 01/14/2023]
Abstract
Experimental/theoretical analyses have already been performed on poly(ε-caprolactone) (PCL) loaded with organic-inorganic fillers (PCL/TiO₂ and PCL/ZrO₂) to find a correlation between the results from the small punch test and Young's modulus of the materials. PCL loaded with Ti2 (PCL = 12, TiO₂ = 88 wt %) and Zr2 (PCL = 12, ZrO₂ = 88 wt %) hybrid fillers showed better performances than those obtained for the other particle composition. In this context, the aim of current research is to provide further insight into the mechanical properties of PCL loaded with sol-gel-synthesized organic-inorganic hybrid fillers for bone tissue engineering. For this reason, theoretical analyses were performed by the finite element method. The results from the small punch test and Young's modulus of the materials were newly correlated. The obtained values of Young's modulus (193 MPa for PCL, 378 MPa for PCL/Ti2 and 415 MPa for PCL/Zr2) were higher than those obtained from a previous theoretical modelling (144 MPa for PCL, 282 MPa for PCL/Ti2 and 310 MPa for PCL/Zr2). This correlation will be an important step for the evaluation of Young's modulus, starting from the small punch test data.
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Affiliation(s)
- Saverio Maietta
- Department of Industrial Engineering, Fraunhofer JL IDEAS-University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy.
| | - Teresa Russo
- Institute of Polymers, Composites and Biomaterials-National Research Council of Italy, V.le J.F. Kennedy 54-Mostra d'Oltremare Pad. 20, 80125 Naples, Italy.
| | - Roberto De Santis
- Institute of Polymers, Composites and Biomaterials-National Research Council of Italy, V.le J.F. Kennedy 54-Mostra d'Oltremare Pad. 20, 80125 Naples, Italy.
| | - Dante Ronca
- Institute of Orthopaedics and Traumathology, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 2-4, 80138 Naples, Italy.
| | - Filomena Riccardi
- Institute of Orthopaedics and Traumathology, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 2-4, 80138 Naples, Italy.
| | - Michelina Catauro
- Department of Industrial and Information Engineering, University of Campania "Luigi Vanvitelli", Via Roma 29, 81031 Aversa, Italy.
| | - Massimo Martorelli
- Department of Industrial Engineering, Fraunhofer JL IDEAS-University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy.
| | - Antonio Gloria
- Institute of Polymers, Composites and Biomaterials-National Research Council of Italy, V.le J.F. Kennedy 54-Mostra d'Oltremare Pad. 20, 80125 Naples, Italy.
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Rumyantseva M, Makeeva E, Gaskov A, Shepel N, Peregudova S, Khoroshutin A, Tokarev S, Fedorova O. H₂S Sensing by Hybrids Based on Nanocrystalline SnO₂ Functionalized with Cu(II) Organometallic Complexes: The Role of the Ligand Platform. Nanomaterials (Basel) 2017; 7:nano7110384. [PMID: 29120409 PMCID: PMC5707601 DOI: 10.3390/nano7110384] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 10/24/2017] [Accepted: 11/06/2017] [Indexed: 11/26/2022]
Abstract
This paper deals with the functionalization of nanocrystalline SnO2 with Cu(II) complexes with organic ligands, aimed at the improvement of sensor selectivity towards gas molecules. For the synthesis of metalorganic/SnO2 hybrid material complexes of Cu(II) with phthalocyanine, porphyrinines, bipyridine and azadithiacrown etherwere used. The analysis of gas sensor properties showed the possibility of increasing the sensitivity and selectivity of hybrid materials in H2S detection due to the electron transfer from SnO2 to an adsorbed organic molecule, which changes during the interaction between H2S and Cu(II) ions.
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Affiliation(s)
| | - Ekaterina Makeeva
- Faculty of Chemistry, Moscow State University, 119991 Moscow, Russia.
| | - Alexander Gaskov
- Faculty of Chemistry, Moscow State University, 119991 Moscow, Russia.
| | - Nikolay Shepel
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia.
| | - Svetlana Peregudova
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia.
| | | | - Sergey Tokarev
- Faculty of Chemistry, Moscow State University, 119991 Moscow, Russia.
| | - Olga Fedorova
- Faculty of Chemistry, Moscow State University, 119991 Moscow, Russia.
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia.
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Raj G, Swalus C, Arendt E, Eloy P, Devillers M, Gaigneaux EM. Controlling the dispersion of supported polyoxometalate heterogeneous catalysts: impact of hybridization and the role of hydrophilicity-hydrophobicity balance and supramolecularity. Beilstein J Nanotechnol 2014; 5:1749-59. [PMID: 25383286 PMCID: PMC4222433 DOI: 10.3762/bjnano.5.185] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 09/19/2014] [Indexed: 06/04/2023]
Abstract
The hybridization of polyoxometalates (POMs) through an organic-inorganic association offers several processing advantages in the design of heterogeneous catalysts. A clear understanding of the organization of these hybrid materials on solid surfaces is necessary to optimise their properties. Herein, we report for the first time the organization of Keggin phosphotungstic [PW12O40](3-) and Wells-Dawson (WD) phosphomolybdic [P2Mo18O62](6-) anions deposited on mica (hydrophilic), and highly oriented pyrolytic graphite (HOPG) (hydrophobic) surfaces. Next, the supramolecular organization of the organic-inorganic hybrid materials formed from the association of POM anions and dimethyldioctadecylammonium bromide (DODA) is investigated as a function of the hydrophilic or hydrophobic nature of the surfaces. The height of the Keggin-POM anions, measured with tapping mode (TM-AFM) is always in good agreement with the molecular dimension of symmetric Keggin-POM anions (ca. 1 nm). However, the asymmetric WD-POM anions form monolayer assemblies on the surfaces with the orientation of their long molecular axis (ca. 1.6 nm) depending on the hydrophilic or hydrophobic properties of the substrate. Namely, the long axis is parallel on mica, and perpendicular on HOPG. When hybridized with DODA, the organization of the hybrid material is dictated by the interaction of the alkyl side chains of DODA with the substrate surface. On HOPG, the DODA-POM hybrid forms small domains of epitaxially arranged straight nanorod structures with their orientation parallel to each other. Conversely, randomly distributed nanospheres are formed when the hybrid material is deposited on freshly cleaved mica. Finally, a UV-ozone treatment of the hybrid material allows one to obtain highly dispersed isolated POM entities on both hydrophilic and hydrophobic surfaces. The hybridization strategy to prevent the clustering of POMs on various supports would enable to develop highly dispersed POM-based heterogeneous catalysts with enhanced functionalities.
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Affiliation(s)
- Gijo Raj
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
- CEA Grenoble, INAC, UMR 5819 SPRAM (CEA/CNRS/UJF-Grenoble 1), Laboratoire d’Electronique Moléculaire, Organique et Hybride, 17 rue des Martyrs, 38054 Grenoble cedex 9, France
| | - Colas Swalus
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Eglantine Arendt
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Pierre Eloy
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Michel Devillers
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
| | - Eric M Gaigneaux
- Institute of Condensed Matter and Nanosciences, Division MOlecules, Solids and reactiviTy, Université catholique de Louvain, Croix du Sud 2, L7.05.17, B-1348, Louvain-la-Neuve, Belgium
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Soudani S, Aubert E, Jelsch C, Ben Nasr C. The organic-inorganic hybrid material 1-cyclohexylpiperazine-1,4-diium tetrachloridozincate. Acta Crystallogr C 2013; 69:1304-6. [PMID: 24192176 DOI: 10.1107/s0108270113026267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 09/23/2013] [Indexed: 11/10/2022] Open
Abstract
In the crystal structure of the title organic-inorganic hybrid material, (C10H22N2)[ZnCl4], the tetrachloridozincate anions and 1-cyclohexylpiperazine-1,4-diium dications are interconnected via N-H...Cl and C-H...Cl hydrogen bonds to form layers parallel to the (001) plane. The cyclohexyl groups from adjacent chains interdigitate, thus building the three-dimensional structure. The piperazinium and cyclohexyl rings exhibit regular spatial chair conformations. The title salt was also characterized by FT-IR and Raman spectroscopic analyses.
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Affiliation(s)
- Sarra Soudani
- Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia
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