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Grishanov DA, Churakov AV, Medvedev AG, Mikhaylov AA, Lev O, Prikhodchenko PV. Crystalline Ammonium Peroxogermanate as a Waste-Free, Fully Recyclable Versatile Precursor for Germanium Compounds. Inorg Chem 2019; 58:1905-1911. [PMID: 30649865 DOI: 10.1021/acs.inorgchem.8b02747] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
High, nearly 100%, yield synthesis of ammonium peroxogermanate (APG), (NH4)6[Ge6(μ-OO)6(μ-O)6(OH)6]·6H2O, is presented, and its crystal structure is determined by single crystal X-ray study. It comprises centrosymmetric hexanuclear peroxogermanate anions [Ge6(μ-OO)6(μ-O)6(OH)6]6- with six μ-oxo- and six μ-peroxo groups forming negatively charged layers. The space between these layers is filled by ammonium cations and water molecules, forming a highly stable structure due to hydrogen bonding. Highly soluble macroporous amorphous germanium oxide (HSGO) is then synthesized by mild treatment of APG. The compound forms highly oversaturated metastable germanium oxide solution with a solubility of 100 g/L, over 20 times higher than the solubility of amorphous germanium oxide. HSGO solution is a versatile reagent that can react with basic and acidic reagents to give a diverse range of salts including, e.g., germanium sulfide, germanium hydrophosphate, and potassium germanate. In the absence of acid or base, the aqueous HSGO solution yields hexagonal germanium oxide under ambient conditions.
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Affiliation(s)
- Dmitry A Grishanov
- Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , Leninskii prosp. 31 , Moscow 119991 , Russia
| | - Andrei V Churakov
- Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , Leninskii prosp. 31 , Moscow 119991 , Russia
| | - Alexander G Medvedev
- Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , Leninskii prosp. 31 , Moscow 119991 , Russia
| | - Alexey A Mikhaylov
- Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , Leninskii prosp. 31 , Moscow 119991 , Russia
| | - Ovadia Lev
- The Casali Center and the Institute of Chemistry and The Harvey M. Krueger Family Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Edmond J. Safra Campus , Jerusalem 91904 , Israel
| | - Petr V Prikhodchenko
- Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , Leninskii prosp. 31 , Moscow 119991 , Russia
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Limo MJ, Sola-Rabada A, Boix E, Thota V, Westcott ZC, Puddu V, Perry CC. Interactions between Metal Oxides and Biomolecules: from Fundamental Understanding to Applications. Chem Rev 2018; 118:11118-11193. [PMID: 30362737 DOI: 10.1021/acs.chemrev.7b00660] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Metallo-oxide (MO)-based bioinorganic nanocomposites promise unique structures, physicochemical properties, and novel biochemical functionalities, and within the past decade, investment in research on materials such as ZnO, TiO2, SiO2, and GeO2 has significantly increased. Besides traditional approaches, the synthesis, shaping, structural patterning, and postprocessing chemical functionalization of the materials surface is inspired by strategies which mimic processes in nature. Would such materials deliver new technologies? Answering this question requires the merging of historical knowledge and current research from different fields of science. Practically, we need an effective defragmentation of the research area. From our perspective, the superficial accounting of material properties, chemistry of the surfaces, and the behavior of biomolecules next to such surfaces is a problem. This is particularly of concern when we wish to bridge between technologies in vitro and biotechnologies in vivo. Further, besides the potential practical technological efficiency and advantages such materials might exhibit, we have to consider the wider long-term implications of material stability and toxicity. In this contribution, we present a critical review of recent advances in the chemistry and engineering of MO-based biocomposites, highlighting the role of interactions at the interface and the techniques by which these can be studied. At the end of the article, we outline the challenges which hamper progress in research and extrapolate to developing and promising directions including additive manufacturing and synthetic biology that could benefit from molecular level understanding of interactions occurring between inanimate (abiotic) and living (biotic) materials.
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Affiliation(s)
- Marion J Limo
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom.,Interface and Surface Analysis Centre, School of Pharmacy , University of Nottingham , University Park, Nottingham NG7 2RD , United Kingdom
| | - Anna Sola-Rabada
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Estefania Boix
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom.,Department of Bioproducts and Biosystems , Aalto University , P.O. Box 16100, FI-00076 Aalto , Finland
| | - Veeranjaneyulu Thota
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Zayd C Westcott
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Valeria Puddu
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
| | - Carole C Perry
- Interdisciplinary Biomedical Research Centre, School of Science and Technology , Nottingham Trent University , Clifton Lane, Nottingham NG11 8NS , United Kingdom
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Kumar V, Zoellner B, Maggard PA, Wang G. Effect of doping Ge into Y2O3:Ho,Yb on the green-to-red emission ratio and temperature sensing. Dalton Trans 2018; 47:11158-11165. [DOI: 10.1039/c8dt02216j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Ge-doped Y2O3:Ho,Yb phosphor tunes the G/R ratio, and the G/R ratio has a higher absolute temperature sensitivity.
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Affiliation(s)
- Vineet Kumar
- Chemistry Department
- North Carolina State University
- Raleigh
- USA
| | | | - Paul A. Maggard
- Chemistry Department
- North Carolina State University
- Raleigh
- USA
| | - Gufeng Wang
- Chemistry Department
- North Carolina State University
- Raleigh
- USA
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Chauhan NPS, Gholipourmalekabadi M, Mozafari M. Fabrication of newly developed pectin –GeO2 nanocomposite using extreme biomimetics route and its antibacterial activities. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1317211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Narendra Pal Singh Chauhan
- Department of Chemistry, Co-Ed Wing, Faculty of Science, Bhupal Nobles University, Udaipur, Rajasthan, India
| | - Mazaher Gholipourmalekabadi
- Cellular & Molecular Research Centre, Iran University of Medical Science, Tehran, Iran
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Masoud Mozafari
- Bioengineering Research Group, Department of Materials and Energy research center, Nanotechnology and advanced Materials, Tehran, Iran
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