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Abstract
Recent studies in development of near-infrared luminophores focus on overcoming their disadvantages such as low quantum efficiency, limited emission power, and broad emission spectra. Rare earth (RE) elements are promising compounds in this respect as they offer a unique set of optical properties that provide narrow emission spectra and large Stokes shifts. This work reports the results of synthesis and characterization of new anisometric complexes of lanthanide(III) tris(b-diketonates) and 1,10-phenanthroline. These complexes possess light emitting-properties in the near-infrared range. Due to their structural features, these complexes allow production of homogeneous films by spin coating. These films are transparent in the visible and near-infrared ranges (transmission up to 99%). This paper demonstrates advantages of Yb(III), Er(III), and Nd(III) complexes as potential components of highly efficient light-transforming NIR coatings.
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Kumar Gupta S, Pratap Singh A, Karunakar M. Mesomorphic properties of benzoxazole Salicylaldimines and their Copper(II) Complexes: Synthesis and structural characterization. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Knyazev AA, Krupin AS, Kovshik AP, Galyametdinov YG. Effect of Magnetic and Electric Field on the Orientation of Rare-Earth-Containing Nematics. Inorg Chem 2021; 60:660-670. [PMID: 33372755 DOI: 10.1021/acs.inorgchem.0c02500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report rare-earth-containing metallomesogens with newly synthesized ligands represented by the β-diketone 1-(4-(4-propylcyclohexyl)phenyl)octane-1,3-dione (CPDk3-5) and the Lewis base 5,5'-bis(heptadecyl)-2,2'-bipyridine (bpy17-17). The stoichiometry of the complexes is [Ln(CPDk3-5)3bpy17-17], where Ln is a trivalent rare-earth ion (La, Sm, Eu, Gd, Tb, Dy, Ho, Tm, and Yb). Although the ligands themselves do not form any mesophase, the respective metal complexes produce nematic and smectic A phases. The mesogenic rare-earth complexes were characterized by NMR, MS, POM, DSC, X-ray diffraction, magnetic susceptibility measurements, and dielectric spectroscopy. The metal complexes display a remarkably large magnetic anisotropy in the mesophase. These nematic liquid crystals can, therefore, be easily aligned by an external low-threshold magnetic field.
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Affiliation(s)
- Andrey A Knyazev
- Physical and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Aleksandr S Krupin
- Physical and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Aleksandr P Kovshik
- Department of Molecular Biophysics and Polymer Physics, Saint Petersburg State University, 199034 Saint Petersburg, Russia
| | - Yuriy G Galyametdinov
- Physical and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
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Naren G, Bao T, Ning J, Tegus O. Optical properties and aggregation behavior of environmentally friendly Lanthanum (III) acyl–alaninnate complexes. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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5
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Pramanik HA, Chanda C, Paul PC, Bhattacharjee CR, Prasad SK, Rao DS. Novel tris-buffer based Schiff base bearing long flexible alkoxy arm and its lanthanide complexes: Mesomorphism and photoluminescence. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chakrabarty R, Dutta A, Roy S, Das G, Ledoux-Rak I, Mondal P, Prasad SK, Rao DSS, Bhattacharjee CR. Multifunctional Lanthanide Complexes: Mesomorphism, Photoluminescence and Second Order NLO Property. ChemistrySelect 2018. [DOI: 10.1002/slct.201801561] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rupam Chakrabarty
- Department of Chemistry; Assam University, Silchar; Assam-788011 India
| | - Abhijit Dutta
- Department of Chemistry; Assam University, Silchar; Assam-788011 India
| | - Sushmita Roy
- Department of Chemistry; Assam University, Silchar; Assam-788011 India
| | - Gobinda Das
- Department of Chemistry; Assam University, Silchar; Assam-788011 India
- Chemistry Program; New York University Abu Dhabi, Experimental Research Building (C1), Saadiyat Island; United Arab Emirates
| | - Isabelle Ledoux-Rak
- Laboratoire de Photonique Quantique et Moléculaire UMR CNRS 8531; ENS Paris Saclay, CentraleSupelec - 61 avenue du Président Wilson; 94235 Cachan France
| | - Paritosh Mondal
- Department of Chemistry; Assam University, Silchar; Assam-788011 India
| | - Subbarao. K. Prasad
- Centre for Nano and Soft Matter Sciences; Prof. U. R. Rao Road, Post Box No. 1329, Jalahalli Bangalore−560 013 India
| | - Doddamane S. S. Rao
- Centre for Nano and Soft Matter Sciences; Prof. U. R. Rao Road, Post Box No. 1329, Jalahalli Bangalore−560 013 India
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Abstract
Herein, an electrospinning process of samarium complex-doped PMMAs was carried out to fabricate ultrafine fibers with a uniform diameter of about 230 nm.
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Affiliation(s)
- Yue Li
- School of Textile and Material Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
- Department of Electronic Engineering and State Key Laboratory of Millimeter Waves
| | - Baojie Chen
- Department of Electronic Engineering and State Key Laboratory of Millimeter Waves
- City University of Hong Kong
- Kowloon
- P. R. China
| | - Edwin Yue Bun Pun
- Department of Electronic Engineering and State Key Laboratory of Millimeter Waves
- City University of Hong Kong
- Kowloon
- P. R. China
| | - Hai Lin
- School of Textile and Material Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
- Department of Electronic Engineering and State Key Laboratory of Millimeter Waves
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Karunakar M, Yerrasani R, Dubey R, Singh AK, Rao T. Lanthanide complexes of a mesogenic Schiff's base having 1,3,4-oxadiazole moiety: Synthesis and characterization. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Photoluminescent tetrahedral d 10 -metal Schiff base complexes exhibiting highly ordered mesomorphism. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.11.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Knyazev AA, Krupin AS, Molostova EY, Romanova KA, Galyametdinov YG. Influence of Structural Anisotropy on Mesogenity of Eu(III) Adducts and Optical Properties of Vitrified Films Formed on their Base. Inorg Chem 2015; 54:8987-93. [DOI: 10.1021/acs.inorgchem.5b01617] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrey A. Knyazev
- Physical
and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Aleksandr S. Krupin
- Physical
and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Elena Yu. Molostova
- Physical
and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Ksenia A. Romanova
- Physical
and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
| | - Yuriy G. Galyametdinov
- Physical
and Colloid Chemistry Department, Kazan National Research Technological University, 420015 Kazan, Russia
- Kazan
E. K. Zavoisky Physical-Technical Institute, Russian Academy of Sciences, 420029 Kazan, Russia
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Electrochemical and liquid crystal properties of ferrocene-based β-diketonato copper(II) and zinc(II) complexes. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-014-1909-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Zhao WZ, Cong YH, Zhang BY, Gu WM. Europium-containing cholesteric liquid crystalline polymers in the side chain. J Appl Polym Sci 2014. [DOI: 10.1002/app.40866] [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)
- Wen-Zhi Zhao
- Centre for Molecular Science and Engineering; Northeastern University; Shenyang 110004 People's Republic of China
| | - Yue-Hua Cong
- Centre for Molecular Science and Engineering; Northeastern University; Shenyang 110004 People's Republic of China
| | - Bao-Yan Zhang
- Centre for Molecular Science and Engineering; Northeastern University; Shenyang 110004 People's Republic of China
| | - Wei-Min Gu
- Centre for Molecular Science and Engineering; Northeastern University; Shenyang 110004 People's Republic of China
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Pramanik HAR, Das G, Bhattacharjee CR, Paul PC, Mondal P, Prasad SK, Rao DSS. Tunable emissive lanthanidomesogen derived from a room-temperature liquid-crystalline Schiff-base ligand. Chemistry 2013; 19:13151-9. [PMID: 23939837 DOI: 10.1002/chem.201301666] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 06/23/2013] [Indexed: 11/12/2022]
Abstract
A novel photoluminescent room-temperature liquid-crystalline salicylaldimine Schiff base with a short alkoxy substituent and a series of lanthanide(III) complexes of the type [Ln(LH)3(NO3)3] (Ln = La, Pr, Sm, Gd, Tb, Dy; LH = (E)-5-(hexyloxy)-2-[{2-(2-hydroxyethylamino)ethylimino]methyl}phenol) have been synthesized and characterized by FTIR, (1)H and (13)C NMR, UV/Vis, and FAB-MS analyses. The ligand coordinates to the metal ions in its zwitterionic form. The thermal behavior of the compounds was investigated by polarizing optical microscopy (POM) and differential scanning calorimetry (DSC). The ligand exhibits an enantiotropic hexagonal columnar (Col(h)) mesophase at room temperature and the complexes show an enantiotropic lamellar columnar (Col(L)) phase at around 120 °C with high thermal stability. Based on XRD results, different space-filling models have been proposed for the ligand and complexes to account for the columnar mesomorphism. The ligand exhibits intense blue emission both in solution and in the condensed state. The most intense emissions were observed for the samarium and terbium complexes, with the samarium complex glowing with a bright-orange light (ca. 560-644 nm) and the terbium complex emitting green light (ca. 490-622 nm) upon UV irradiation. DFT calculations performed by using the DMol3 program at the BLYP/DNP level of theory revealed a nine-coordinate structure for the lanthanide complexes.
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Affiliation(s)
- Harun A R Pramanik
- Department of Chemistry, Assam University, Silchar 788011, Assam (India), Fax: (+91) 03842-270342
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Implementing Liquid-Crystalline Properties in Single-Stranded Dinuclear Lanthanide Helicates. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300176] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bhattacharjee CR, Das G, Goswami P, Mondal P, Prasad SK, Rao DS. Novel photoluminescent lanthanidomesogens forming bilayer smectic phase derived from blue light emitting liquid crystalline, one ring O-donor Schiff-base ligands. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Bhattacharjee CR, Das G, Mondal P, Prasad SK, Rao DSS. Novel Green Light Emitting Nondiscoid Liquid Crystalline Zinc(II) Schiff-Base Complexes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001248] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wang Y, Liu Y, Luo J, Qi H, Li X, Nin M, Liu M, Shi D, Zhu W, Cao Y. Metallomesogens based on platinum(ii) complexes: synthesis, luminescence and polarized emission. Dalton Trans 2011; 40:5046-51. [DOI: 10.1039/c0dt01515f] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Eliseeva SV, Bünzli JCG. Lanthanide luminescence for functional materials and bio-sciences. Chem Soc Rev 2010; 39:189-227. [PMID: 20023849 DOI: 10.1039/b905604c] [Citation(s) in RCA: 2121] [Impact Index Per Article: 151.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Svetlana V Eliseeva
- Laboratory of Lanthanide Supramolecular Chemistry, Swiss Federal Institute of Technology, Lausanne (EPFL)
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Rezvani Z, Ghanea MA, Nejati K, Baghaei SA. Syntheses and mesomorphic properties of new oxygen-bridged dicopper complex homologous derived from azo-containing salicylaldimine Schiff base ligands. Polyhedron 2009. [DOI: 10.1016/j.poly.2009.06.089] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zebret S, Dupont N, Bernardinelli G, Hamacek J. Self-Assembly of a Trinuclear Luminescent Europium Complex. Chemistry 2009; 15:3355-8. [PMID: 19235190 DOI: 10.1002/chem.200802676] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Soumaila Zebret
- Department of Inorganic, Analytical and Applied Chemistry, University of Geneva, 30 quai E. Ansermet, 1211 Geneva, Switzerland
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