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Ohashi M, Takahashi Y, Terakado N, Onoue N, Shinozaki T, Fujiwara T. Temperature dependence of afterglow in zirconia and its optically-stimulated luminescence by bone-through irradiation for biological temperature probe. Sci Rep 2020; 10:2242. [PMID: 32041977 PMCID: PMC7010703 DOI: 10.1038/s41598-020-58979-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 01/22/2020] [Indexed: 02/07/2023] Open
Abstract
Development of minimally invasive and site-selective biological temperature sensing is quite important in medical field. This study presents a novel temperature sensing technique based on afterglow and optically-stimulated luminescence (OSL). The dependence of afterglow photoluminescent intensity on the environmental temperature of zirconia (ZrO2) phosphor is examined to validate its use as a sensing probe. In addition, assuming the measurement in deep-part of human body, we have applied the information gathered from our validation to observe OSL from the ZrO2 by irradiation with near-infrared laser through a bone sample. This study demonstrates an alternative medical application of phosphor, and introduces an elemental-technology for the temperature sensing.
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Affiliation(s)
- Masaharu Ohashi
- Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba 05, Aoba-ku, Sendai, 980-8579, Japan
| | - Yoshihiro Takahashi
- Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba 05, Aoba-ku, Sendai, 980-8579, Japan.
| | - Nobuaki Terakado
- Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba 05, Aoba-ku, Sendai, 980-8579, Japan
| | - Noriko Onoue
- Department of Cardiovascular Medicine, National Hospital Organization, Sendai Medical Center, 8-8, 2-chome, Miyagino, Miyagino-ku, Sendai, Miyagi, 983-8520, Japan
| | - Tsuyoshi Shinozaki
- Department of Cardiovascular Medicine, National Hospital Organization, Sendai Medical Center, 8-8, 2-chome, Miyagino, Miyagino-ku, Sendai, Miyagi, 983-8520, Japan
| | - Takumi Fujiwara
- Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba 05, Aoba-ku, Sendai, 980-8579, Japan.
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Facile Sonochemical Preparation of Au-ZrO2 Nanocatalyst for the Catalytic Reduction of 4-Nitrophenol. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10020503] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
High-intensity ultrasonic waves have great potential for the green synthesis of various nanomaterials under mild conditions and offer an excellent alternative for hazardous chemical methods. Herein a facile approach for the eco-friendly synthesis of Au-ZrO2 nanocatalyst with a high catalytic activity using a facile ultrasonic method is presented. Gold (Au) in the nanosize regime was successfully deposited on the surface of solvothermally synthesized monodispersed ZrO2 nanoparticles (ZrO2 NPs) in a very short period of time (5 min) at room temperature. Spherical shape small size Au nanoparticles that are uniformly dispersed on the surface of ZrO2 nanoparticles were obtained. Notably, in the absence of ZrO2 nanoparticles, HAuCl4 could not be reduced, indicating that nano-sized ZrO2 not only acted as support but also helped to reduce the gold precursor at the surface. The as-prepared Au-ZrO2 nanocatalyst was characterized by various techniques. The Au-ZrO2 nanocatalyst served as a highly efficient reducing catalyst for the reduction of 4-nitrophenol. The reaction time decreased with increasing the amount of catalyst.
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Dutta J, Rai VK. Zirconia based Ho 3+-Yb 3+ codoped upconverting nanophosphors for green light emitting devices applications. Methods Appl Fluoresc 2018; 6:025003. [PMID: 28862153 DOI: 10.1088/2050-6120/aa89bf] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Photoluminescence study of the Ho3+-Yb3+ codoped ZrO, AlZrO and YZrO nanophosphors, synthesized by chemical co-precipitation method, upon excitation at 450 and 980 nm radiations have been performed. An improvement of about ∼4.5 times in the downconversion emission intensity of green band corresponding to the 5F4, 5S2 → 5I8 transition for codoped YZrO nanophosphors compared to ZrO codoped nanophosphors has been observed. On varying the pump power density upon 980 nm excitation the colour tunability in the codoped YZrO nanophosphors has been observed. UC emission intensity of the green band arising from the Ho3+ ion in the codoped YZrO nanophosphors is enhanced about ∼22 times compared to that of the codoped ZrO nanophosphors. The absorption and UC emission study for the codoped YZrO nanophosphors dispersed in different biologically compatible solvents viz. water, methanol, ethanol and dimethyl sulfoxide (DMSO) has been performed. The green UC emission intensity of about ∼1.3 and ∼1.7 times for the efficient codoped YZrO nanophosphors dispersed in methanol compared to that dispersed in water and DMSO respectively has been observed. The absorption spectra of an efficient upconverting YZrO nanophosphors dispersed in methanol exhibit no change with the passage of time.
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Affiliation(s)
- Joydip Dutta
- Laser and Spectroscopy Laboratory, Department of Applied Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, Jharkhand, India
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Balaji S, Mandal BK, Ranjan S, Dasgupta N, Chidambaram R. Nano-zirconia - Evaluation of its antioxidant and anticancer activity. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 170:125-133. [PMID: 28431297 DOI: 10.1016/j.jphotobiol.2017.04.004] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 03/29/2017] [Accepted: 04/07/2017] [Indexed: 11/28/2022]
Abstract
Bioactivity of nanomaterials largely depends on its size, shape and crystalline nature. In this work, the smaller sized spherical shaped nano-zirconia (ZrO2 NPs) (of ~9 to 11nm) was fabricated and studied its biological activity especially antioxidant and cytotoxicity against human colon carcinoma (HCT-116) and human lung carcinoma (A-549) cell lines. To have its real applications in biological aspects readily available Eucalyptus globulus (E. globulus) leaf extract was used as an effective capping and reducing agent for its synthesis. The prepared ZrO2 NPs was characterized by using different sophisticated instrumentations such as UV-visible spectrophotometer, XRD, FTIR, TEM, SAED, EDX, DLS and fluorescence spectroscopy. Cellular mitochondrial activity i.e. cell viability was measured by MTT assay and anti-oxidant activity was determined by DPPH assay. The smaller sized ZrO2 NPs showed strong antioxidant activity as well as cytotoxicity on human cancer cell lines. Comparative cytotoxic studies were conducted on human cancerous cell lines using different techniques. Results confirmed the efficient anti-cancer activities of the fabricated ZrO2 NPs towards the tested cell lines as well as efficient anti-oxidant activity. This is the first study in which E. globulus leaf extract was used to synthesize smaller spherical shaped ZrO2 NPs for improved bioactivity i.e. antioxidant and cytotoxicity.
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Affiliation(s)
- Siripireddy Balaji
- Trace Elements Speciation Research Laboratory, Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, India
| | - Badal Kumar Mandal
- Trace Elements Speciation Research Laboratory, Department of Chemistry, School of Advanced Sciences, VIT University, Vellore 632014, India.
| | - Shivendu Ranjan
- Nano-food Research Group, Instrumental and Food Analysis Laboratory, School of Bio Sciences and Technology, VIT University, Vellore, Tamil Nadu, India
| | - Nandita Dasgupta
- Nano-food Research Group, Instrumental and Food Analysis Laboratory, School of Bio Sciences and Technology, VIT University, Vellore, Tamil Nadu, India
| | - Ramalingam Chidambaram
- Nano-food Research Group, Instrumental and Food Analysis Laboratory, School of Bio Sciences and Technology, VIT University, Vellore, Tamil Nadu, India
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Shaik MR, Al-Marri AH, Adil SF, Mohri N, Barton B, Siddiqui MRH, Al-Warthan A, Labis JP, Tremel W, Khan M, Tahir MN. Benzyl Alcohol Assisted Synthesis and Characterization of Highly Reduced Graphene Oxide (HRG)@ZrO2
Nanocomposites. ChemistrySelect 2017. [DOI: 10.1002/slct.201601962] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mohammed R. Shaik
- Department of Chemistry, College of Science; King Saud University, P.O. Box 2455; Riyadh 11451 Kingdom of Saudi Arabia
| | - Abdulhadi H. Al-Marri
- Department of Chemistry, College of Science; King Saud University, P.O. Box 2455; Riyadh 11451 Kingdom of Saudi Arabia
| | - Syed F. Adil
- Department of Chemistry, College of Science; King Saud University, P.O. Box 2455; Riyadh 11451 Kingdom of Saudi Arabia
| | - Nils Mohri
- Institute of Inorganic and Analytical Chemistry; Johannes Gutenberg-University of Mainz; Mainz Germany
| | - Bastian Barton
- Institute of Inorganic and Analytical Chemistry; Johannes Gutenberg-University of Mainz; Mainz Germany
| | - Mohammed R. H. Siddiqui
- Department of Chemistry, College of Science; King Saud University, P.O. Box 2455; Riyadh 11451 Kingdom of Saudi Arabia
| | - Abdulrahman Al-Warthan
- Department of Chemistry, College of Science; King Saud University, P.O. Box 2455; Riyadh 11451 Kingdom of Saudi Arabia
| | - Joselito P. Labis
- King Abdullah Institute for Nanotechnology; King Saud University, P.O. Box 2455; Riyadh 11451 Kingdom of Saudi Arabia
| | - Wolfgang Tremel
- Institute of Inorganic and Analytical Chemistry; Johannes Gutenberg-University of Mainz; Mainz Germany
| | - Mujeeb Khan
- Department of Chemistry, College of Science; King Saud University, P.O. Box 2455; Riyadh 11451 Kingdom of Saudi Arabia
| | - Muhammad N. Tahir
- Institute of Inorganic and Analytical Chemistry; Johannes Gutenberg-University of Mainz; Mainz Germany
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Biological and structural studies of phosphonium ‘masked thiolate’ compounds. Eur J Med Chem 2017; 125:528-537. [DOI: 10.1016/j.ejmech.2016.08.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 08/11/2016] [Accepted: 08/12/2016] [Indexed: 01/09/2023]
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Chen A, Zhou Y, Miao S, Li Y, Shen W. Assembly of monoclinic ZrO2nanorods: formation mechanism and crystal phase control. CrystEngComm 2016. [DOI: 10.1039/c5ce02269j] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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