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Yang S, Lim D, Yoo D, Kang Y, Lee C, Kang G. Opto-magnetic properties of nano-structured MgO:Al powders prepared in a micro drop fluidized reactor. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Khanderi J, Davaasuren B, Alshankiti BA, Rothenberger A. Tin(II) ketoacidoximates: synthesis, X-ray structures and processing to tin(II) oxide. Dalton Trans 2015; 44:19820-8. [PMID: 26528675 DOI: 10.1039/c5dt03103f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tin(II) ketoacidoximates of the type [HON=CRCOO]2Sn (R = Me 1, CH2Ph 2) and (MeON=CMeCOO)3Sn](-) NH4(+)·2H2O 3 were synthesized by reacting pyruvate- and hydroxyl- or methoxylamine RONH2 (R = H, Me) with tin(II) chloride dihydrate SnCl2·2H2O. The single crystal X-ray structure reveals that the geometry at the Sn atom is trigonal bipyramidal in 1, 2 and trigonal pyramidal in 3. Inter- or intramolecular hydrogen bonding is observed in 1-3. Thermogravimetric (TG) analysis shows that the decomposition of 1-3 to SnO occurs at ca. 160 °C. The evolved gas analysis during TG indicates complete loss of the oximato ligand in one step for 1 whereas a small organic residue is additionally removed at temperatures >400 °C for 2. Above 140 °C, [HON=C(Me)COO]2Sn (1) decomposes in air to spherical SnO particles of size 10-500 nm. Spin coating of 1 on Si or a glass substrate followed by heating at 200 °C results in a uniform film of SnO. The band gap of the produced SnO film and nanomaterial was determined by diffuse reflectance spectroscopy to be in the range of 3.0-3.3 eV. X-ray photoelectron spectroscopy indicates surface oxidation of the SnO film to SnO2 in ambient atmosphere.
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Affiliation(s)
- Jayaprakash Khanderi
- Physical Sciences and Engineering Division, 4700 King Abdullah University of Science & Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.
| | - Bambar Davaasuren
- Physical Sciences and Engineering Division, 4700 King Abdullah University of Science & Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.
| | - Buthainah Ameen Alshankiti
- Physical Sciences and Engineering Division, 4700 King Abdullah University of Science & Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.
| | - Alexander Rothenberger
- Physical Sciences and Engineering Division, 4700 King Abdullah University of Science & Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.
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Patel MK, Ali MA, Krishnan S, Agrawal VV, Al Kheraif AA, Fouad H, Ansari Z, Ansari SG, Malhotra BD. A Label-Free Photoluminescence Genosensor Using Nanostructured Magnesium Oxide for Cholera Detection. Sci Rep 2015; 5:17384. [PMID: 26611737 PMCID: PMC4661725 DOI: 10.1038/srep17384] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 10/29/2015] [Indexed: 11/20/2022] Open
Abstract
Nanomaterial-based photoluminescence (PL) diagnostic devices offer fast and highly sensitive detection of pesticides, DNA, and toxic agents. Here we report a label-free PL genosensor for sensitive detection of Vibrio cholerae that is based on a DNA hybridization strategy utilizing nanostructured magnesium oxide (nMgO; size >30 nm) particles. The morphology and size of the synthesized nMgO were determined by transmission electron microscopic (TEM) studies. The probe DNA (pDNA) was conjugated with nMgO and characterized by X-ray photoelectron and Fourier transform infrared spectroscopic techniques. The target complementary genomic DNA (cDNA) isolated from clinical samples of V. cholerae was subjected to DNA hybridization studies using the pDNA-nMgO complex and detection of the cDNA was accomplished by measuring changes in PL intensity. The PL peak intensity measured at 700 nm (red emission) increases with the increase in cDNA concentration. A linear range of response in the developed PL genosensor was observed from 100 to 500 ng/μL with a sensitivity of 1.306 emi/ng, detection limit of 3.133 ng/μL and a regression coefficient (R(2)) of 0.987. These results show that this ultrasensitive PL genosensor has the potential for applications in the clinical diagnosis of cholera.
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Affiliation(s)
- Manoj Kumar Patel
- Biomedical Instrumentation Section, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
- Department of Chemistry, College of Arts and Sciences, Oklahoma State University, Stillwater, Oklahoma 74078, United States of America
| | - Md. Azahar Ali
- Biomedical Instrumentation Section, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
- Department of Electrical and Computer Engineering, Iowa State University, Ames, IA 50011, United States of America
| | - Sadagopan Krishnan
- Department of Chemistry, College of Arts and Sciences, Oklahoma State University, Stillwater, Oklahoma 74078, United States of America
| | - Ved Varun Agrawal
- Biomedical Instrumentation Section, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India
| | - AbdulAziz A. Al Kheraif
- Dental Biomaterials Research Chair, Dental Health Department, College of Applied Medical Science, King Saud University, Riyadh, 11437 Saudi Arabia
| | - H. Fouad
- Dental Biomaterials Research Chair, Dental Health Department, College of Applied Medical Science, King Saud University, Riyadh, 11437 Saudi Arabia
- Biomedical Engineering Department, Faculty of Engineering, Helwan University, 11792, Egypt
| | - Z.A. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - S. G. Ansari
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Bansi D. Malhotra
- Department of Biotechnology, Delhi Technological University, Shahabad Daulatpur, Main Bawana Road, Delhi 110042, India
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Patzsch J, Balog I, Krauß P, Lehmann CW, Schneider JJ. Synthesis, characterization and p–n type gas sensing behaviour of CuFeO2 delafossite type inorganic wires using Fe and Cu complexes as single source molecular precursors. RSC Adv 2014. [DOI: 10.1039/c3ra47514j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Pashchanka M, Prasad RM, Hoffmann RC, Gurlo A, Schneider JJ. Inkjet‐Printed Nanoscaled CuO for Miniaturized Gas‐Sensing Devices. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201152] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mikhail Pashchanka
- Fachbereich Chemie, Eduard Zintl‐Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany, Fax: +49‐6151‐163470, http://www.chemie.tu‐darmstadt.de/schneider
| | - Ravi M. Prasad
- Fachbereich Material‐ und Geowissenschaften, Technische Universität Darmstadt, Petersenstrasse 32, 64287 Darmstadt, Germany
| | - Rudolf C. Hoffmann
- Fachbereich Chemie, Eduard Zintl‐Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany, Fax: +49‐6151‐163470, http://www.chemie.tu‐darmstadt.de/schneider
| | - Aleksander Gurlo
- Fachbereich Material‐ und Geowissenschaften, Technische Universität Darmstadt, Petersenstrasse 32, 64287 Darmstadt, Germany
| | - Jörg J. Schneider
- Fachbereich Chemie, Eduard Zintl‐Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany, Fax: +49‐6151‐163470, http://www.chemie.tu‐darmstadt.de/schneider
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Pashchanka M, Hoffmann RC, Schneider JJ. A Molecular Precursor Approach to 3D Aligned CuInS2Chalcopyrite Nanorod Arrays. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200886] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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