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Gurusamy S, Banerjee S, Sundaresan A, Liang M, Shiv Halasyamani P, Natarajan S. Synthesis, Optical, Dielectric, SHG, Magnetic and Visible Light Driven Catalytic Studies on Compounds Belonging to the Swedenborgite Structure. Chem Asian J 2024:e202301113. [PMID: 38321639 DOI: 10.1002/asia.202301113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/08/2024]
Abstract
A new compound, InBaZn3 GaO7 , with swedenborgite structure along with transition metal (TM) substituted variants have also been prepared. The structure contains layers of tetrahedral ions (Zn2+ /Ga3+ ) connected by octahedrally coordinated In3+ ion forming the three-dimensional structure with voids where the Ba2+ ions occupy. The TM substituted compounds form with new colors. The origin of the color was understood based on the ligand-field transitions. The near IR reflectivity studies indicate that the Ni - substituted compounds exhibit good near - IR reflectivity behavior, making them possible candidates for 'cool pigments'. The temperature dependent dielectric studies indicate that the InBaZn3 GaO7 compound undergoes a phase transition at ~360 °C. The compounds are active towards second harmonic generation (SHG). Magnetic studies show the compounds, InBaZn2 CoFeO7 and InBaZn2 CuFeO7 to be anti-ferromagnetic in nature. The copper containing compounds were found to be good catalysts, under visible light, for the oxidation of aromatic alkenes. The many properties observed in the swedenborgite structure-based compounds suggests that the mineral structure offers a fertile ground to investigate newer compounds and properties.
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Affiliation(s)
- Sivakumar Gurusamy
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India
| | - Souvik Banerjee
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O., Bangalore, 560 064, India
| | - Athinarayanan Sundaresan
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O., Bangalore, 560 064, India
| | - Mingli Liang
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas, 77204-5003, United States
| | - P Shiv Halasyamani
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas, 77204-5003, United States
| | - Srinivasan Natarajan
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India
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Natarajan S, Sivakumar G. Structural evolution of transition metal orthoborates (Zn3B2O6 ‐ Co3B2O6) with the Kotoite mineral structure: Synthesis, structure and properties. Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Srinivasan Natarajan
- Solid State and Structural Chemistry, Indian Institute of Science Framework Solids Laboratory Sir C.V. Raman avenue 560012 Bangalore INDIA
| | - Gurusamy Sivakumar
- Indian Institute of Science Solid State and Structural Chemistry Unit 560012 Bangalore INDIA
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Sun S, Lee K, Lee G, Kim Y, Kim S, Hwang J, Kong H, Chung KY, Ali G, Song T, Paik U. Fe-substituted silica via lattice dissolution–reprecipitation replacement for tungsten chemical mechanical planarization. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bhim A, Sutter J, Gopalakrishnan J, Natarajan S. Stuffed Tridymite Structures: Synthesis, Structure, Second Harmonic Generation, Optical, and Multiferroic Properties. Chemistry 2021; 27:1995-2008. [DOI: 10.1002/chem.202004078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/24/2020] [Indexed: 01/22/2023]
Affiliation(s)
- Anupam Bhim
- Solid State and Structural Chemistry Unit Indian Institute of Science Bangalore 560012 India
| | - Jean‐Pascal Sutter
- Laboratoire de Chime de Coordination CNRS, Université de Toulouse 205 route de Narbonne 31077 Toulouse France
| | | | - Srinivasan Natarajan
- Solid State and Structural Chemistry Unit Indian Institute of Science Bangalore 560012 India
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Bhim A, Mohanty A, Natarajan S. Tuning the Langasite, La 3SbZn 3Si 2O 14, towards white light emission: synthesis, structure, SHG and photoluminescence studies. Dalton Trans 2020; 49:17649-17657. [PMID: 33231229 DOI: 10.1039/d0dt03450a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of single-phase color-tunable Langasite, La3SbZn3Si2O14:RE3+ (RE = Eu, Tb, and Tm) phosphors have been prepared and characterized employing X-ray diffraction (XRD), Raman, and photoluminescence (PL) studies. The substituted compounds, La3SbZn3Si2O14:Eu3+, La3SbZn3Si2O14:Tb3+ and La3SbZn3Si2O14:Tm3+ exhibit the characteristic emissions of Eu3+ (red), Tb3+ (green) and Tm3+ (blue), respectively. By carefully adjusting the concentration of Eu3+ ions in the La3SbZn3Si2O14:1% Tm3+, 2% Tb3+, x% Eu3+ system, we achieved a white emission with a reasonable quantum yield. The compounds are found to be SHG (second-harmonic generation) active with the highest values of 3.6 × KDP (potassium dihydrogen phosphate). In addition, the compounds exhibit reasonable dielectric constants with low loss. The present study demonstrates the color tunability of the Langasite family of compounds and establishes it as an adaptable structure.
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Affiliation(s)
- Anupam Bhim
- Framework Solids Laboratory, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560012, India.
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Yao S, Moseley HNB. Finding High-Quality Metal Ion-Centric Regions Across the Worldwide Protein Data Bank. Molecules 2019; 24:E3179. [PMID: 31480623 PMCID: PMC6751499 DOI: 10.3390/molecules24173179] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 08/27/2019] [Accepted: 08/30/2019] [Indexed: 01/23/2023] Open
Abstract
As the number of macromolecular structures in the worldwide Protein Data Bank (wwPDB) continues to grow rapidly, more attention is being paid to the quality of its data, especially for use in aggregated structural and dynamics analyses. In this study, we systematically analyzed 3.5 Å regions around all metal ions across all PDB entries with supporting electron density maps available from the PDB in Europe. All resulting metal ion-centric regions were evaluated with respect to four quality-control criteria involving electron density resolution, atom occupancy, symmetry atom exclusion, and regional electron density discrepancy. The resulting list of metal binding sites passing all four criteria possess high regional structural quality and should be beneficial to a wide variety of downstream analyses. This study demonstrates an approach for the pan-PDB evaluation of metal binding site structural quality with respect to underlying X-ray crystallographic experimental data represented in the available electron density maps of proteins. For non-crystallographers in particular, we hope to change the focus and discussion of structural quality from a global evaluation to a regional evaluation, since all structural entries in the wwPDB appear to have both regions of high and low structural quality.
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Affiliation(s)
- Sen Yao
- Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
- Resource Center for Stable Isotope Resolved Metabolomics, University of Kentucky, Lexington, KY 40536, USA
| | - Hunter N B Moseley
- Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA.
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA.
- Resource Center for Stable Isotope Resolved Metabolomics, University of Kentucky, Lexington, KY 40536, USA.
- Institute for Biomedical Informatics, University of Kentucky, Lexington, KY 40536, USA.
- Center for Clinical and Translational Science, University of Kentucky, Lexington, KY 40536, USA.
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Bhim A, Zhang W, Halasyamani PS, Gopalakrishnan J, Natarajan S. New Members of SHG Active Dugganite Family, A3BC3D2O14 (A = Ba, Pb; B = Te, Sb; C = Al, Ga, Fe, Zn; D = Si, Ge, P, V): Synthesis, Structure, and Materials Properties. Inorg Chem 2019; 58:8560-8569. [DOI: 10.1021/acs.inorgchem.9b00860] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anupam Bhim
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore−560012, India
| | - Weiguo Zhang
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204−5003, United States
| | - P. Shiv Halasyamani
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas 77204−5003, United States
| | | | - Srinivasan Natarajan
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore−560012, India
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Bhim A, Gopalakrishnan J, Natarajan S. Exploring the Corundum Structure as a Host for Colored Compounds – Synthesis, Structures, and Optical Studies of (MM′)
3
TeO
6
(M = Mg, Mn, Co, Ni, Zn; M′ = Mg, Mn, Co, Ni, Cu). Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anupam Bhim
- Solid State and Structural Chemistry Unit Indian Institute of Science 560012 Bangalore India
| | | | - Srinivasan Natarajan
- Solid State and Structural Chemistry Unit Indian Institute of Science 560012 Bangalore India
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