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Righini GC, Armellini C, Ferrari M, Carlotto A, Carpentiero A, Chiappini A, Chiasera A, Lukowiak A, Tran TNL, Varas S. Sol-Gel Photonic Glasses: From Material to Application. Materials (Basel) 2023; 16:2724. [PMID: 37049018 PMCID: PMC10096013 DOI: 10.3390/ma16072724] [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] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/18/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
In this review, we present a short overview of the development of sol-gel glasses for application in the field of photonics, with a focus on some of the most interesting results obtained by our group and collaborators in that area. Our main attention is devoted to silicate glasses of different compositions, which are characterized by specific optical and spectroscopic properties for various applications, ranging from luminescent systems to light-confining structures and memristors. In particular, the roles of rare-earth doping, matrix composition, the densification process and the fabrication protocol on the structural, optical and spectroscopic properties of the developed photonic systems are discussed through appropriate examples. Some achievements in the fabrication of oxide sol-gel optical waveguides and of micro- and nanostructures for the confinement of light are also briefly discussed.
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Affiliation(s)
- Giancarlo C. Righini
- Nello Carrara Institute of Applied Physics (IFAC-CNR), MiPLab, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Cristina Armellini
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
| | - Maurizio Ferrari
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
| | - Alice Carlotto
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
| | - Alessandro Carpentiero
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
| | - Andrea Chiappini
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
| | - Alessandro Chiasera
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, PAS, ul. Okólna 2, 50422 Wroclaw, Poland;
| | - Thi Ngoc Lam Tran
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
- Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Department of Materials Technology, Faculty of Applied Science, Ho Chi Minh City University of Technology and Education, Vo Van Ngan Street 1, Thu Duc District, Ho Chi Minh City 720214, Vietnam
| | - Stefano Varas
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy (M.F.); (A.C.); (A.C.); (A.C.); (A.C.); (T.N.L.T.); (S.V.)
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2
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Bodylska W, Fandzloch M, Szukiewicz R, Lukowiak A. Cation-Exchange in Metal-Organic Framework as a Strategy to Obtain New Material for Ascorbic Acid Detection. Nanomaterials (Basel) 2022; 12:4480. [PMID: 36558333 PMCID: PMC9786631 DOI: 10.3390/nano12244480] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/09/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Ascorbic acid (AA) is an important biomolecule, the deficiency or maladjustment of which is associated with the symptoms of many diseases (e.g., cardiovascular disease or cancer). Therefore, there is a need to develop a fluorescent probe capable of detecting AA in aqueous media. Here, we report the synthesis, structural, and spectroscopic characterization (by means of, e.g., XRD, XPS, IR and Raman spectroscopy, TG, SEM, and EDS analyses), as well as the photoluminescent properties of a metal-organic framework (MOF) based on Cu2+ and Eu3+ ions. The ion-exchange process of the extraframework cation in anionic Cu-based MOF is proposed as an appropriate strategy to obtain a new material with a nondisturbed structure and a sensitivity to interaction with AA. Accordingly, a novel Eu[Cu3(μ3-OH)(μ3-4-carboxypyrazolato)3] compound for the selective optical detection of AA with a short detection time of 5 min is described.
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Affiliation(s)
- Weronika Bodylska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland
| | - Marzena Fandzloch
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland
| | - Rafał Szukiewicz
- Faculty of Physics and Astronomy, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland
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Fandzloch M, Bodylska W, Barszcz B, Trzcińska-Wencel J, Roszek K, Golińska P, Lukowiak A. Effect of ZnO on sol–gel glass properties toward (bio)application. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gerasymchuk Y, Wedzynska A, Lukowiak A. Novel CaO–SiO2–P2O5 Nanobioglass Activated with Hafnium Phthalocyanine. Nanomaterials 2022; 12:nano12101719. [PMID: 35630941 PMCID: PMC9146838 DOI: 10.3390/nano12101719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 05/08/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023]
Abstract
Bioactive glasses are materials which can be used in medicine for regeneration of hard and soft tissues. Their functionalization with active molecules or addition to composites broaden significantly the possible range of glass applications. Hereby, we describe photoactive nanoparticles of CaO–SiO2–P2O5 glass modified with dichlorohafnium (IV) phthalocyanine. The low-temperature, sol–gel based reverse micelle method was proposed for the synthesis, which allowed introduction of metal organic molecules into the glass composition. The morphology, structure, and composition of the material was described showing that spherical but agglomerated glass nanoparticles (size below 100 nm) were obtained in the ternary system. It was also shown that optical properties of the phthalocyanine complex were maintained after immobilization of the dye in the glass. The photoluminescence and generation of singlet oxygen molecules were observed under the light irradiation of the glass.
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Fandzloch M, Bodylska W, Roszek K, Halubek-Gluchowska K, Jaromin A, Gerasymchuk Y, Lukowiak A. Solvothermally-derived nanoglass as a highly bioactive material. Nanoscale 2022; 14:5514-5528. [PMID: 35343556 DOI: 10.1039/d1nr05984j] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A highly bioactive glass solvBG76 in a binary system 76SiO2-24CaO (wt%) was prepared following a solvothermal path of the synthesis. The facile synthesis, in terms of the steps and reagents needed, enabled the achievement of a mesoporous material. Many factors such as nano-size (<50 nm), different morphology (non-spherical), use of an unconventional network modifier (calcium hydroxide) during the synthesis, a structure free of crystalline impurities, and textural properties greatly enhanced the kinetic deposition process of hydroxyapatite (HA) when contacting with physiological fluids. The formation of a HA layer on the glass was analyzed by various techniques, namely XRD, IR-ATR, Raman, XPS, EDS analyses, SEM, and HR-TEM imaging. The results obtained were compared to the 45S5 glass tested as a reference biomaterial as well as 70S30C-a glass with similar size and composition to reported solvBG76 but obtained by the conventional sol-gel method. For the first time, superior apatite-mineralization ability in less than 1 h in a physiological-like buffer was achieved. This unique bioactivity is accompanied by biocompatibility and hemocompatibility, which was indicated by a set of various assays in human dermal fibroblasts and MC3T3 mouse osteoblast precursor cells, as well as hemolytic activity determination.
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Affiliation(s)
- Marzena Fandzloch
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland.
| | - Weronika Bodylska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland.
| | - Katarzyna Roszek
- Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland
| | - Katarzyna Halubek-Gluchowska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland.
| | - Anna Jaromin
- Department of Lipids and Liposomes, Faculty of Biotechnology, University of Wrocław, Joliot-Curie 14a, 50-383 Wrocław, Poland
| | - Yuriy Gerasymchuk
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland.
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland.
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Tran TNL, Chiasera A, Lukowiak A, Ferrari M. Eu 3+ as a Powerful Structural and Spectroscopic Tool for Glass Photonics. Materials (Basel) 2022; 15:ma15051847. [PMID: 35269078 PMCID: PMC8911916 DOI: 10.3390/ma15051847] [Citation(s) in RCA: 2] [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: 01/31/2022] [Revised: 02/13/2022] [Accepted: 02/21/2022] [Indexed: 02/04/2023]
Abstract
The unique properties of the Eu3+ ion make it a powerful spectroscopic tool to investigate structure or follow processes and mechanisms in several high-tech application areas such as biology and health, structural engineering, environment monitoring systems and quantum technology, mainly concerning photonics. The traditional method is to exploit the unique photoluminescent properties of Eu3+ ions to understand complex dynamical processes and obtain information useful to develop materials with specific characteristics. The objective of this review is to focus on the use of Eu3+ optical spectroscopy in some condensed matter issues. After a short presentation of the more significant properties of the Eu3+ ion, some examples regarding its use as a probe of the local structure in sol-gel systems are presented. Another section is devoted to dynamical processes such as the important technological role of nanocrystals as rare-earth sensitizers. The appealing effect of the site-selection memory, observed when exciting different sites into the 5D1 state, which the 5D0 → 7F0 emission band reflects following the sites' distribution, is also mentioned. Finally, a section is devoted to the use of Eu3+ in the development of a rare-earth-based platform for quantum technologies.
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Affiliation(s)
- Thi Ngoc Lam Tran
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via Alla Cascata 56/C, Povo, 38123 Trento, Italy;
- Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
- Department of Materials Technology, Faculty of Applied Science, Ho Chi Minh City University of Technology and Education, Vo Van Ngan Street 1, Thu Duc District, Ho Chi Minh City 720214, Vietnam
- Correspondence: (T.N.L.T.); (A.C.); (A.L.)
| | - Alessandro Chiasera
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via Alla Cascata 56/C, Povo, 38123 Trento, Italy;
- Correspondence: (T.N.L.T.); (A.C.); (A.L.)
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
- Correspondence: (T.N.L.T.); (A.C.); (A.L.)
| | - Maurizio Ferrari
- IFN-CNR CSMFO Laboratory and FBK Photonics Unit, Via Alla Cascata 56/C, Povo, 38123 Trento, Italy;
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Carlotto A, Sayginer O, Szczurek A, Tran LTN, Dell’Anna R, Varas S, Babiarczuk B, Krzak J, Bursi OS, Zonta D, Lukowiak A, Righini GC, Ferrari M, Pietralunga SM, Chiasera A. Flexible all-glass planar structured fabricated by RF-sputtering. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202226606003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Flexible SiO2/HfO2 1D photonic crystals and active SiO2–HfO2:Er3+ all-glass flexible planar waveguides fabricated by radio frequency sputtering, are presented. The 1D photonic crystals show a strong dependence of the optical features on the light incident angle: i) blue-shift of the stopband and ii) narrowing of the reflectance window. Nevertheless, the most interesting result is the experimental evidence that, even after the 1D photonic crystals breakage, where the flexible glass shows naked-eye visible cracks, the multilayer structures generally maintain their integrity, resulting to be promising systems for flexible photonic applications thanks to their optical, thermal and mechanical stability. The flexible planar waveguides, fabricated on ultrathin flexible glass substrate, showed an attenuation coefficient lower than 0.2 dB/cm at 1.54 μm, and exibits emission in the NIR region, resulting particularly suitable as waveguide amplifier in the C band of telecommunications.
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Gerasymchuk Y, Tahershamsi L, Tomala R, Wedzynska A, Chernii V, Tretyakova I, Korona-Glowniak I, Rajtar B, Malm A, Piatek D, Lukowiak A. Composites based on graphite oxide and zirconium phthalocyanines with aromatic amino acids as photoactive materials. Chem Pap 2021. [DOI: 10.1007/s11696-021-01731-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
AbstractThis article is a part of a scientific project focused on obtaining a new type of composite materials that are characterized by singlet oxygen generation upon irradiation with red light, which can be used as antibacterial agents. The composite material is nanoscale graphite oxide (GO) particles covalently bonded to an axially substituted zirconium phthalocyanine complex. For this purpose, two phthalocyanine zirconium complexes, axially mono-substituted with 4-aminosalicylic or 4-aminophthalic acids, were prepared and measured in terms of structure, morphology, and spectroscopic properties. The zirconium phthalocyanines are photosensitizers, and the axial ligands are bridging links connecting the complexes to the GO carrier (due to their terminal amino groups and carboxyl groups, respectively). The axial ligand in zirconium phthalocyanine complexes has a strong influence on the stability and optical properties of composite materials and, consequently, on reactive oxygen species (ROS) generation. In this paper, the effect of composite components (4-aminophthalato or 4-aminosalicylato substituted zirconium phthalocyanine complex as a photosensitizer and graphite oxide as a carrier and modulator of the action of active components) on ROS generation for potential antibacterial use is discussed.
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Gerasymchuk Y, Kędziora A, Wędzyńska A, Tahershamsi L, Chernii V, Tretyakova I, Chernii S, Pekhnyo V, Korona-Głowniak I, Malm A, Rajtar B, Bachanek T, Piątek D, Bugla-Płoskońska G, Lukowiak A. Composite based on graphite oxide, metallic silver and zirconium phthalocyanine coordinated by out-of-plane argininate ligands as photoactive antibacterial additive to endodontic cement. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Morka KD, Wernecki M, Kędziora A, Książczyk M, Dudek B, Gerasymchuk Y, Lukowiak A, Bystroń J, Bugla-Płoskońska G. The Impact of Graphite Oxide Nanocomposites on the Antibacterial Activity of Serum. Int J Mol Sci 2021; 22:7386. [PMID: 34299005 PMCID: PMC8304721 DOI: 10.3390/ijms22147386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/04/2021] [Accepted: 07/06/2021] [Indexed: 12/21/2022] Open
Abstract
Nanoparticles can interact with the complement system and modulate the inflammatory response. The effect of these interactions on the complement activity strongly depends on physicochemical properties of nanoparticles. The interactions of silver nanoparticles with serum proteins (particularly with the complement system components) have the potential to significantly affect the antibacterial activity of serum, with serious implications for human health. The aim of the study was to assess the influence of graphite oxide (GO) nanocomposites (GO, GO-PcZr(Lys)2-Ag, GO-Ag, GO-PcZr(Lys)2) on the antibacterial activity of normal human serum (NHS), serum activity against bacteria isolated from alveoli treated with nanocomposites, and nanocomposite sensitivity of bacteria exposed to serum in vitro (using normal human serum). Additionally, the in vivo cytotoxic effect of the GO compounds was determined with application of a Galleria mellonella larvae model. GO-PcZr(Lys)2, without IR irradiation enhance the antimicrobial efficacy of the human serum. IR irradiation enhances bactericidal activity of serum in the case of the GO-PcZr(Lys)2-Ag sample. Bacteria exposed to nanocomposites become more sensitive to the action of serum. Bacteria exposed to serum become more sensitive to the GO-Ag sample. None of the tested GO nanocomposites displayed a cytotoxicity towards larvae.
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Affiliation(s)
- Katarzyna Dorota Morka
- Department of Food Hygiene and Consumer Health Protection, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, C. K. Norwida 31, 50-375 Wrocław, Poland;
| | - Maciej Wernecki
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, S. Przybyszewskiego 63/77, 51-148 Wroclaw, Poland; (M.W.); (A.K.); (M.K.); (B.D.)
| | - Anna Kędziora
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, S. Przybyszewskiego 63/77, 51-148 Wroclaw, Poland; (M.W.); (A.K.); (M.K.); (B.D.)
| | - Marta Książczyk
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, S. Przybyszewskiego 63/77, 51-148 Wroclaw, Poland; (M.W.); (A.K.); (M.K.); (B.D.)
| | - Bartłomiej Dudek
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, S. Przybyszewskiego 63/77, 51-148 Wroclaw, Poland; (M.W.); (A.K.); (M.K.); (B.D.)
| | - Yuriy Gerasymchuk
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422 Wrocław, Poland; (Y.G.); (A.L.)
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422 Wrocław, Poland; (Y.G.); (A.L.)
| | - Jarosław Bystroń
- Department of Food Hygiene and Consumer Health Protection, Faculty of Veterinary Medicine, University of Environmental and Life Sciences, C. K. Norwida 31, 50-375 Wrocław, Poland;
| | - Gabriela Bugla-Płoskońska
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, S. Przybyszewskiego 63/77, 51-148 Wroclaw, Poland; (M.W.); (A.K.); (M.K.); (B.D.)
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Korona-Glowniak I, Piatek D, Fornal E, Lukowiak A, Gerasymchuk Y, Kedziora A, Bugla-Płoskonska G, Grywalska E, Bachanek T, Malm A. Patterns of Oral Microbiota in Patients with Apical Periodontitis. J Clin Med 2021; 10:jcm10122707. [PMID: 34205290 PMCID: PMC8234888 DOI: 10.3390/jcm10122707] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 05/21/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 11/23/2022] Open
Abstract
In this study, microbial diversity of the root canal microbiota related to different endodontic infections was investigated. In total, 45 patients with endo–perio lesions (8 patients), chronic periapical periodontitis (29 patients) and pulp necrosis (8 patients) were recruited. In 19 (42.2%) patients there was secondary infection of root canals. Microbial specimens were collected from root canals of non-vital teeth with or without changes in periapical area visible in X-ray. Then, oral microbiota were detected and identified using the culture method and real-time PCR amplification primers and hydrolysis-probe detection with the 16S rRNA gene as the target. Overall, 1434 species/genes from 41 different genera of 90 various microbial species were retrieved. Of the major reported phyla, Firmicutes (62.9%), Actinobacteria (14.0%), Bacteroidetes (12.1%), Proteobacteria (9.1%) and Fusobacteria (4.2%) were detected. Of the bacterial species, 54.6% were strict anaerobes. Corynebacterium matruchotii (p = 0.039) was present significantly more frequently in chronic periapical periodontitis. Moreover, the higher values of Decayed, Missing and Filled Permanent Teeth index were positively correlated with relative abundance of Actinomyces spp. (p = 0.042), Lactobacillus spp. (p = 0.006), Propionibacterium spp. (p = 0.024) and Rothia spp. (p = 0.002). The multivariate analyses revealed differences in total root canal samples, where components that affected grouping of root samples into four main categories were identified. Anaerobic Gram-negative bacteria predominated in root canals of teeth with pulp necrosis and periapical lesions. Facultative anaerobic Gram-positive bacteria predominated in canals with secondary infections. All detected members of mixed population groups that might serve as keystone species contributed to the entire community in its clinical relevance.
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Affiliation(s)
- Izabela Korona-Glowniak
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Medical University of Lublin, 20-093 Lublin, Poland;
- Correspondence: ; Tel.: +48-814487105
| | - Dominika Piatek
- Department of Conservative Dentistry with Endodontics, Faculty of Medical Dentistry, Medical University of Lublin, 20-093 Lublin, Poland; (D.P.); (T.B.)
| | - Emilia Fornal
- Department of Pathophysiology, Faculty of Medicine, Medical University of Lublin, 20-090 Lublin, Poland;
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Science, 50-422 Wroclaw, Poland; (A.L.); (Y.G.)
| | - Yuriy Gerasymchuk
- Institute of Low Temperature and Structure Research, Polish Academy of Science, 50-422 Wroclaw, Poland; (A.L.); (Y.G.)
| | - Anna Kedziora
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, 51-148 Wroclaw, Poland; (A.K.); (G.B.-P.)
| | - Gabriela Bugla-Płoskonska
- Department of Microbiology, Faculty of Biological Sciences, University of Wroclaw, 51-148 Wroclaw, Poland; (A.K.); (G.B.-P.)
| | - Ewelina Grywalska
- Department of Clinical Immunology, Faculty of Medicine, Medical University of Lublin, 20-093 Lublin, Poland;
| | - Teresa Bachanek
- Department of Conservative Dentistry with Endodontics, Faculty of Medical Dentistry, Medical University of Lublin, 20-093 Lublin, Poland; (D.P.); (T.B.)
| | - Anna Malm
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Medical University of Lublin, 20-093 Lublin, Poland;
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Halubek-Gluchowska K, Szymański D, Tran TNL, Ferrari M, Lukowiak A. Upconversion Luminescence of Silica-Calcia Nanoparticles Co-doped with Tm 3+ and Yb 3+ Ions. Materials (Basel) 2021; 14:ma14040937. [PMID: 33669430 PMCID: PMC7920482 DOI: 10.3390/ma14040937] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 12/30/2020] [Revised: 01/28/2021] [Accepted: 02/07/2021] [Indexed: 11/16/2022]
Abstract
Looking for upconverting biocompatible nanoparticles, we have prepared by the sol-gel method, silica-calcia glass nanopowders doped with different concentration of Tm3+ and Yb3+ ions (Tm3+ from 0.15 mol% up to 0.5 mol% and Yb3+ from 1 mol% up to 4 mol%) and characterized their structure, morphology, and optical properties. X-ray diffraction patterns indicated an amorphous phase of the silica-based glass with partial crystallization of samples with a higher content of lanthanides ions. Transmission electron microscopy images showed that the average size of particles decreased with increasing lanthanides content. The upconversion (UC) emission spectra and fluorescence lifetimes were registered under near infrared excitation (980 nm) at room temperature to study the energy transfer between Yb3+ and Tm3+ at various active ions concentrations. Characteristic emission bands of Tm3+ ions in the range of 350 nm to 850 nm were observed. To understand the mechanism of Yb3+-Tm3+ UC energy transfer in the SiO2-CaO powders, the kinetics of luminescence decays were studied.
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Affiliation(s)
- Katarzyna Halubek-Gluchowska
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422 Wroclaw, Poland;
- Correspondence: (K.H.-G.); (A.L.)
| | - Damian Szymański
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422 Wroclaw, Poland;
| | - Thi Ngoc Lam Tran
- IFN-CNR CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38100 Trento, Italy; (T.N.L.T.); (M.F.)
| | - Maurizio Ferrari
- IFN-CNR CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, Povo, 38100 Trento, Italy; (T.N.L.T.); (M.F.)
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422 Wroclaw, Poland;
- Correspondence: (K.H.-G.); (A.L.)
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Lam Tran TN, Szczurek A, Varas S, Armellini C, Carpentiero A, Chiappini A, Iacob E, Ischia G, Berneschi S, Conti GN, Bollani M, Scotognella F, Righini GC, Głuchowski P, Chiasera A, Lukowiak A, Ferrari M. Enhanced photorefractivity and rare-earth photoluminescence in SnO 2 nanocrystals-based photonic glass-ceramics. EPJ Web Conf 2021. [DOI: 10.1051/epjconf/202125505001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
This work presents state of the art rare-earth activated SnO2 nanocrystals - based transparent glass-ceramics. With combined enhancements in both photorefractivity and rare-earth photoluminescence, the glass-ceramic has unique benefits as a lasing material. It exhibits high photorefractivity with UV induced refractive index modifications in the order of 10-3. Exploiting its high photorefractivity, optical gratings are fabricated on the glass-ceramic under an energy-efficient direct UV writing process. Furthermore, SnO2 semiconductor nanocrystals are also employed as efficient rare-earth sensitizers enhancing drastically the rare-earth photoluminescence.
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Karoblis D, Griesiute D, Mazeika K, Baltrunas D, Karpinsky DV, Lukowiak A, Gluchowski P, Raudonis R, Katelnikovas A, Zarkov A, Kareiva A. A Facile Synthesis and Characterization of Highly Crystalline Submicro-Sized BiFeO 3. Materials (Basel) 2020; 13:ma13133035. [PMID: 32645940 PMCID: PMC7372470 DOI: 10.3390/ma13133035] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 06/17/2020] [Revised: 06/29/2020] [Accepted: 07/04/2020] [Indexed: 11/22/2022]
Abstract
In this study, a highly crystalline bismuth ferrite (BFO) powder was synthesized using a novel, very simple, and cost-effective synthetic approach. It was demonstrated that the optimal annealing temperature for the preparation of highly-pure BFO is 650 °C. At lower or higher temperatures, the formation of neighboring crystal phases was observed. The thermal behavior of BFO precursor gel was investigated by thermogravimetric and differential scanning calorimetry (TG-DSC) measurements. X-ray diffraction (XRD) analysis and Mössbauer spectroscopy were employed for the investigation of structural properties. Scanning electron microscopy (SEM) was used to evaluate morphological features of the synthesized materials. The obtained powders were also characterized by magnetization measurements, which showed antiferromagnetic behavior of BFO powders.
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Affiliation(s)
- Dovydas Karoblis
- Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (D.K.); (D.G.); (R.R.); (A.K.); (A.Z.)
| | - Diana Griesiute
- Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (D.K.); (D.G.); (R.R.); (A.K.); (A.Z.)
| | - Kestutis Mazeika
- Center for Physical Sciences and Technology, LT-02300 Vilnius, Lithuania; (K.M.); (D.B.)
| | - Dalis Baltrunas
- Center for Physical Sciences and Technology, LT-02300 Vilnius, Lithuania; (K.M.); (D.B.)
| | - Dmitry V. Karpinsky
- Scientific-Practical Materials Research Centre of NAS of Belarus, 220072 Minsk, Belarus;
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, PL 50422 Wroclaw, Poland; (A.L.); (P.G.)
| | - Pawel Gluchowski
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, PL 50422 Wroclaw, Poland; (A.L.); (P.G.)
- Nanoceramics Inc., Okolna 2, PL-50422 Wroclaw, Poland
| | - Rimantas Raudonis
- Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (D.K.); (D.G.); (R.R.); (A.K.); (A.Z.)
| | - Arturas Katelnikovas
- Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (D.K.); (D.G.); (R.R.); (A.K.); (A.Z.)
| | - Aleksej Zarkov
- Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (D.K.); (D.G.); (R.R.); (A.K.); (A.Z.)
| | - Aivaras Kareiva
- Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania; (D.K.); (D.G.); (R.R.); (A.K.); (A.Z.)
- Correspondence:
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Battisha I, Ismaiil M, AHMED H, Zur L, Chiasera A, Ferrari M, Lukowiak A, Ashery A, Salem M. Optical, structure and dielectric properties of Er3+ ions doped Al-Na-K-Ba phosphate glasses. Egypt J Chem 2020. [DOI: 10.21608/ejchem.2020.27059.2578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Chiappini A, Tran LTN, Trejo-García PM, Zur L, Lukowiak A, Ferrari M, Righini GC. Photonic Crystal Stimuli-Responsive Chromatic Sensors: A Short Review. Micromachines (Basel) 2020; 11:E290. [PMID: 32164336 PMCID: PMC7143502 DOI: 10.3390/mi11030290] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [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: 01/15/2020] [Revised: 02/29/2020] [Accepted: 03/08/2020] [Indexed: 12/11/2022]
Abstract
Photonic crystals (PhC) are spatially ordered structures with lattice parameters comparable to the wavelength of propagating light. Their geometrical and refractive index features lead to an energy band structure for photons, which may allow or forbid the propagation of electromagnetic waves in a limited frequency range. These unique properties have attracted much attention for both theoretical and applied research. Devices such as high-reflection omnidirectional mirrors, low-loss waveguides, and high- and low-reflection coatings have been demonstrated, and several application areas have been explored, from optical communications and color displays to energy harvest and sensors. In this latter area, photonic crystal fibers (PCF) have proven to be very suitable for the development of highly performing sensors, but one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) PhCs have been successfully employed, too. The working principle of most PhC sensors is based on the fact that any physical phenomenon which affects the periodicity and the refractive index of the PhC structure induces changes in the intensity and spectral characteristics of the reflected, transmitted or diffracted light; thus, optical measurements allow one to sense, for instance, temperature, pressure, strain, chemical parameters, like pH and ionic strength, and the presence of chemical or biological elements. In the present article, after a brief general introduction, we present a review of the state of the art of PhC sensors, with particular reference to our own results in the field of mechanochromic sensors. We believe that PhC sensors based on changes of structural color and mechanochromic effect are able to provide a promising, technologically simple, low-cost platform for further developing devices and functionalities.
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Affiliation(s)
- Andrea Chiappini
- Institute of Photonics and Nanotechnologies (IFN-CNR) CSMFO Laboratory and Fondazione Bruno Kessler (FBK) Photonics Unit, 38123 Povo (Trento), Italy; (A.C.); (P.M.T.-G.); (L.Z.); (M.F.)
| | - Lam Thi Ngoc Tran
- Department of Materials Technology, Faculty of Applied Sciences, Ho Chi Minh City University of Technology and Education, Ho Chi Min City 70000, Vietnam;
| | - Pablo Marco Trejo-García
- Institute of Photonics and Nanotechnologies (IFN-CNR) CSMFO Laboratory and Fondazione Bruno Kessler (FBK) Photonics Unit, 38123 Povo (Trento), Italy; (A.C.); (P.M.T.-G.); (L.Z.); (M.F.)
- Faculty of Physico-Mathematical Sciences, Benemérita Universidad Autónoma de Puebla (BUAP), Puebla 72570, Mexico
| | - Lidia Zur
- Institute of Photonics and Nanotechnologies (IFN-CNR) CSMFO Laboratory and Fondazione Bruno Kessler (FBK) Photonics Unit, 38123 Povo (Trento), Italy; (A.C.); (P.M.T.-G.); (L.Z.); (M.F.)
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, PAS, 50-422 Wroclaw, Poland;
| | - Maurizio Ferrari
- Institute of Photonics and Nanotechnologies (IFN-CNR) CSMFO Laboratory and Fondazione Bruno Kessler (FBK) Photonics Unit, 38123 Povo (Trento), Italy; (A.C.); (P.M.T.-G.); (L.Z.); (M.F.)
| | - Giancarlo C. Righini
- Nello Carrara Institute of Applied Physics (IFAC CNR), 50019 Sesto Fiorentino (Firenze), Italy
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Gharouel S, Marciniak L, Lukowiak A, Strek W, Horchani-Naifer K, Férid M. Impact of grain size, Pr3+ concentration and host composition on non-contact temperature sensing abilities of polyphosphate nano- and microcrystals. J RARE EARTH 2019. [DOI: 10.1016/j.jre.2018.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Karpinsky DV, Fesenko OM, Silibin MV, Dubkov SV, Chaika M, Yaremkevich A, Lukowiak A, Gerasymchuk Y, Stręk W, Pakalniškis A, Skaudzius R, Kareiva A, Fomichov YM, Shvartsman VV, Kalinin SV, Morozovsky NV, Morozovska AN. Ferromagnetic-like behavior of Bi 0.9La 0.1FeO 3-KBr nanocomposites. Sci Rep 2019; 9:10417. [PMID: 31320659 PMCID: PMC6639540 DOI: 10.1038/s41598-019-46834-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 07/05/2019] [Indexed: 11/09/2022] Open
Abstract
We studied magnetostatic response of the Bi0.9La0.1FeO3– KBr composites (BLFO-KBr) consisting of nanosized (≈100 nm) ferrite Bi0.9La0.1FeO3 (BLFO) conjugated with fine grinded ionic conducting KBr. When the fraction of KBr is rather small (less than 15 wt%) the magnetic response of the composite is very weak and similar to that observed for the BLFO (pure KBr matrix without Bi1-xLaxFeO3 has no magnetic response as anticipated). However, when the fraction of KBr increases above 15%, the magnetic response of the composite changes substantially and the field dependence of magnetization reveals ferromagnetic-like hysteresis loop with a remanent magnetization about 0.14 emu/g and coercive field about 1.8 Tesla (at room temperature). Nothing similar to the ferromagnetic-like hysteresis loop can be observed in Bi1-zLazFeO3 ceramics with z ≤ 0.15, which magnetization quasi-linearly increases with magnetic field. Different physical mechanisms were considered to explain the unusual experimental results for BLFO-KBr nanocomposites, but only those among them, which are highly sensitive to the interaction of antiferromagnetic Bi0.9La0.1FeO3 with ionic conductor KBr, can be relevant.
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Affiliation(s)
- Dmitry V Karpinsky
- Scientific-Practical Materials Research Centre of NAS of Belarus, 220072, Minsk, Belarus
| | - Olena M Fesenko
- Institute of Physics, NAS of Ukraine, 46, pr. Nauky, 03028, Kyiv, Ukraine
| | - Maxim V Silibin
- National Research University of Electronic Technology "MIET", 124498, Moscow, Russia.,Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Sergei V Dubkov
- National Research University of Electronic Technology "MIET", 124498, Moscow, Russia
| | - Mykola Chaika
- Institute of Physics, NAS of Ukraine, 46, pr. Nauky, 03028, Kyiv, Ukraine
| | - Andrii Yaremkevich
- Institute of Physics, NAS of Ukraine, 46, pr. Nauky, 03028, Kyiv, Ukraine
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research, PAS, Wroclaw, 50-422, Poland
| | - Yuri Gerasymchuk
- Institute of Low Temperature and Structure Research, PAS, Wroclaw, 50-422, Poland
| | - Wiesław Stręk
- Institute of Low Temperature and Structure Research, PAS, Wroclaw, 50-422, Poland
| | - Andrius Pakalniškis
- Institute of Chemistry, Vilnius University, Naugarduko 24, Vilnius, LT-03225, Lithuania
| | - Ramunas Skaudzius
- Institute of Chemistry, Vilnius University, Naugarduko 24, Vilnius, LT-03225, Lithuania
| | - Aivaras Kareiva
- Institute of Chemistry, Vilnius University, Naugarduko 24, Vilnius, LT-03225, Lithuania
| | - Yevhen M Fomichov
- Charles University in Prague, Faculty of Mathematics and Physics, V Holešovičkach 2, Prague 8, 18000, Czech Republic
| | - Vladimir V Shvartsman
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141, Essen, Germany
| | - Sergei V Kalinin
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, United States
| | | | - Anna N Morozovska
- Institute of Physics, NAS of Ukraine, 46, pr. Nauky, 03028, Kyiv, Ukraine.
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Borak B, Krzak J, Ptak M, Strek W, Lukowiak A. Spherical nanoparticles of europium-doped silica–calcia glass and glass-ceramic: Spectroscopic characterization. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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21
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Piccolo V, Chiappini A, Armellini C, Barozzi M, Lukowiak A, Sazio PJA, Vaccari A, Ferrari M, Zonta D. 2D Optical Gratings Based on Hexagonal Voids on Transparent Elastomeric Substrate. Micromachines (Basel) 2018; 9:E345. [PMID: 30424278 PMCID: PMC6082248 DOI: 10.3390/mi9070345] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 06/29/2018] [Revised: 07/06/2018] [Accepted: 07/09/2018] [Indexed: 11/16/2022]
Abstract
A chromatic vectorial strain sensor constituted by hexagonal voids on transparent elastomeric substrate has been successfully fabricated via soft colloidal lithography. Initially a highly ordered 1.6 microns polystyrene spheres monolayer colloidal crystal has been realized by wedge-shaped cell method and used as a suitable mold to replicate the periodic structure on a polydimethylsiloxane sheet. The replicated 2D array is characterized by high periodicity and regularity over a large area, as evidenced by morphological and optical properties obtained by means of SEM, absorption and reflectance spectroscopy. In particular, the optical features of the nanostructured elastomer have been investigated in respect to uniaxial deformation up to 10% of its initial length, demonstrating a linear, tunable and reversible response, with a sensitivity of 4.5 ± 0.1 nm/%. Finally, it has been demonstrated that the specific geometrical configuration allows determining simultaneously the vectorial strain-stress information in the x and y directions.
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Affiliation(s)
| | - Andrea Chiappini
- IFN-CNR CSMFO Lab & FBK CMM, Via alla Cascata 56/C, 38123 Trento, Italy.
| | - Cristina Armellini
- IFN-CNR CSMFO Lab & FBK CMM, Via alla Cascata 56/C, 38123 Trento, Italy.
| | - Mario Barozzi
- CMM-MNF, Fondazione Bruno Kessler, Via Sommarive 18, 38123 Trento (Povo), Italy.
| | - Anna Lukowiak
- Institute of Low Temperature and Structure Research PAS, 50-422 Wroclaw, Poland.
| | - Pier-John A Sazio
- ORC, University of Southampton, University Road, Southampton SO17 1BJ, UK.
| | - Alessandro Vaccari
- CMM-ARES, Fondazione Bruno Kessler, Via Sommarive 18, 38123 Trento (Povo), Italy.
| | - Maurizio Ferrari
- IFN-CNR CSMFO Lab & FBK CMM, Via alla Cascata 56/C, 38123 Trento, Italy.
- Enrico Fermi Centre, Piazza del Viminale 1, 00184 Roma, Italy.
| | - Daniele Zonta
- IFN-CNR CSMFO Lab & FBK CMM, Via alla Cascata 56/C, 38123 Trento, Italy.
- Department of Civil and Environmental Engineering, University of Strathclyde, Montrose Street, 75, Glasgow G1 1XJ, UK.
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Lukowiak A, Kedziora A, Strek W. Antimicrobial graphene family materials: Progress, advances, hopes and fears. Adv Colloid Interface Sci 2016; 236:101-12. [PMID: 27569200 DOI: 10.1016/j.cis.2016.08.002] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 02/07/2023]
Abstract
Graphene-based materials have become very popular bionanotechnological instruments in the last few years. Since 2010, the graphene family materials have been recognized as worthy of attention due to its antimicrobial properties. Functionalization of graphene (or rather graphene oxide) surface creates the possibilities to obtain efficient antimicrobial agents. In this review, progress and advances in this field in the last few years are described and discussed. Special attention is devoted to materials based on graphene oxide in which specifically selected components significantly modify biological activity of this carbon structure. Short introduction concerns the physicochemical properties of the graphene family materials. In the section on antimicrobial properties, proposed mechanisms of activity against microorganisms are given showing enhanced action of nanocomposites also under light irradiation (photoinduced activity). Another important feature, i.e. toxicity against eukaryotic cells, is presented with up-to-date data. Taking into account all the information on the properties of the described materials and usefulness of the graphene family as antimicrobial agents, hopes and fears concerning their application are discussed. Finally, some examples of promising usage in medicine and other fields, e.g. in phytobiology and water remediation, are shown.
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Fernández-González R, Velázquez JJ, Rodríguez VD, Rivera-López F, Lukowiak A, Chiasera A, Ferrari M, Gonçalves RR, Marrero-Jerez J, Lahoz F, Núñez P. Luminescence and structural analysis of Ce3+ and Er3+ doped and Ce3+–Er3+ codoped Ca3Sc2Si3O12 garnets: influence of the doping concentration in the energy transfer processes. RSC Adv 2016. [DOI: 10.1039/c5ra22630a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We present a structural a spectroscopy analysis of Ca3Sc2Si3O12 garnets doped with Ce3+ and Er3+ ions that were synthesized by the freeze-drying precursor method. Efficient energy transfer has been obtained result in an enhanced NIR emission.
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Abstract
Different sol-gel strategies based on the Stöber method are proposed enabling preparation of nanoparticles of SiO2-CaO bioactive glass with different size, narrow size distribution and good dispersion capability. Eu(3+)-doped glass nanoparticles with luminescent properties can also be obtained.
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Affiliation(s)
- Anna Lukowiak
- Clermont Université, ENSCCF, ICCF, BP10448, 63000 Clermont-Ferrand, France.
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Wiglusz RJ, Kedziora A, Lukowiak A, Doroszkiewicz W, Strek W. Hydroxyapatites and Europium(III) Doped Hydroxyapatites as a Carrier of Silver Nanoparticles and Their Antimicrobial Activity. J Biomed Nanotechnol 2012; 8:605-12. [DOI: 10.1166/jbn.2012.1424] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Strek W, Marciniak L, Bednarkiewicz A, Lukowiak A, Wiglusz R, Hreniak D. White emission of lithium ytterbium tetraphosphate nanocrystals. Opt Express 2011; 19:14083-14092. [PMID: 21934770 DOI: 10.1364/oe.19.014083] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An efficient anti-Stokes white broadband emission induced by 976 nm laser diode in lithium ytterbium tetraphosphate (LiYbP4O12) nanocrystals was investigated. The emission occurs at room temperature and atmospheric pressure. Its intensity demonstrates an evident threshold dependence on the temperature and excitation density characteristic to avalanche process. The white emission is accompanied by very efficient photoconductivity characterized by microampere photocurrent which increases with the fourth order of applied incident light power (~P4). We show that this emission is critically dependent on temperature and increases significantly in vacuum. It is concluded that the anti-Stokes white emission is associated with theYb3+- CT luminescence.
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Affiliation(s)
- W Strek
- Institute of Low temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland.
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Affiliation(s)
- R. J. Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
| | - R. Pazik
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
| | - A. Lukowiak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
| | - W. Strek
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okolna 2, 50-422 Wroclaw, Poland
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Zhao W, Hreniak D, Boulon G, Strek W, Brenier A, Yin M, Gluchowski P, Lukowiak A, Wiglusz R, Epicier T. Spectroscopic properties of Yb3+-doped Y3Al5O12 nano-ceramics obtained under different sintering pressures. RADIAT MEAS 2010. [DOI: 10.1016/j.radmeas.2009.11.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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30
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Lukowiak A, Wiglusz R, Pazik R, Lemanski K, Stręk W. Synthesis, structure and luminescence properties of KEu0.01Gd0.19Yb0.8(WO4)2 powder. J RARE EARTH 2009. [DOI: 10.1016/s1002-0721(08)60289-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
The two major families of small nucleolar RNAs (snoRNAs), Box C/D and Box H/ACA, are generated in the nucleoplasm and transported to the nucleolus where they function in rRNA processing and modification. We have investigated the sequences involved in the intranuclear transport of Box H/ACA snoRNAs by assaying the localization of injected fluorescent RNAs in Xenopus oocyte nuclear spreads. Our analysis of U17, U64 and U65 has revealed that disruption of either of the conserved sequence elements, Box H or Box ACA, eliminates nucleolar localization. In addition, the stem present at the base of the 3' hairpin is required for efficient nucleolar localization of U65. Fragments or rearrangements of U65 that consist of Box H and Box ACA flanking either the 5' or 3' hairpin are targeted to the nucleolus. The targeting is dependent on the presence of the Box sequences, but not on their orientation. Our results indicate that in each of the two major families of snoRNAs, a motif composed of the signature conserved sequences and an adjacent structural element that tethers the sequence elements directs the nucleolar localization of the RNAs. We demonstrate that telomerase RNA is also targeted to the nucleolus by a Box ACA-dependent mechanism.
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Affiliation(s)
- A Narayanan
- Department of Biochemistry, University of Georgia, Life Science Building, Athens, GA 30602, USA
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