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Granadeiro CM, Julião D, Ribeiro SO, Cunha-Silva L, Balula SS. Recent advances in lanthanide-coordinated polyoxometalates: from structural overview to functional materials. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214914] [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]
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Features of the Preparation and Luminescence of Langmuir-Blodgett Films Based on the Tb(III) Complex with 3-Methyl-1-phenyl-4-stearoylpyrazol-5-one and 2,2'-Bipyridine. MATERIALS 2022; 15:ma15031127. [PMID: 35161072 PMCID: PMC8840368 DOI: 10.3390/ma15031127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/16/2022] [Accepted: 01/25/2022] [Indexed: 12/04/2022]
Abstract
In this study, we investigated the effect of terbium ions (Tb3+) on the subphases of the limiting area of the molecule for the complex compound (CC) TbL3∙bipy (where HL is 3-methyl-1-phenyl-4-stearoylpyrazol-5-one and bipy is 2,2′-bipyridine). We examined the Langmuir monolayer and the change in the luminescence properties of TbL3∙bipy-based Langmuir-Blodgett films (LBFs). The analysis of the compression isotherms, infrared, and luminescence spectra of TbL3∙bipy LBFs was performed by varying the concentration of Tb3+ in the subphases. Our results demonstrate the partial dissociation of the CC at concentrations of C(Tb3+) < 5 × 10−4 M.
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Makinde ZO, van der Heijden NJ, Clyde D, Nam S, Brothers PJ, Malmström J, Granville S, Domigan LJ, McGillivray DJ, Williams DE. Geometric Frustration and Long-Range Ordering Induced by Surface Pressure Oscillation in a Langmuir-Blodgett Monolayer of Magnetic Soft Spheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10150-10158. [PMID: 34384020 DOI: 10.1021/acs.langmuir.1c01577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As a step toward the bottom-up construction of magnonic systems, this paper demonstrates the use of a large-amplitude surface-pressure annealing technique to generate 2-D order in a Langmuir-Blodgett monolayer of magnetic soft spheres comprising a surfactant-encapsulated polyoxometalate. The films show a distorted square lattice interpreted as due to geometric frustration caused by 2-D confinement between soft walls, one being the air interface and the other the aqueous subphase. Hysteresis and relaxation phenomena in the 2-D layers are suggested to be due to folding and time-dependent interpenetration of surfactant chains.
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Affiliation(s)
- Zainab O Makinde
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Nadine J van der Heijden
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Daniel Clyde
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Seong Nam
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Penelope J Brothers
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
- Research School of Chemistry, The Australian National University, Canberra ACT 2601, Australia
| | - Jenny Malmström
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
- Department of Chemical and Materials Engineering, The University of Auckland, 20 Symonds St., Auckland 1010, New Zealand
| | - Simon Granville
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
- Robinson Research Institute, Victoria University of Wellington, Wellington 6140, New Zealand
| | - Laura J Domigan
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
- Department of Chemical and Materials Engineering, The University of Auckland, 20 Symonds St., Auckland 1010, New Zealand
| | - Duncan J McGillivray
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
| | - David E Williams
- School of Chemical Sciences, The University of Auckland, 23 Symonds St., Auckland 1010, New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology, Victoria University of Wellington, Wellington 6140, New Zealand
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Gao W, Yu T, Du Y, Wang R, Wu L, Bi L. First Orange Fluorescence Composite Film Based on Sm-Substituted Tungstophosphate and Its Electrofluorochromic Performance. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11621-11628. [PMID: 27088254 DOI: 10.1021/acsami.6b03131] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We chose a Sm-containing sandwich-type tungstophosphate K3Cs8[Sm(PW11O39)2]·10H2O (SmPW11) as a molecular dyad, which contains photoluminescence and electrochromism components in a skeletal structure, and investigated its electrofluorochromic performance both in solution and in composite films. First, the electrochemical activity and luminescence property of SmPW11 were studied in different pH solutions to determine the optimal pH solution medium; and then, the electrofluorochromic performance of SmPW11 was investigated under the optimized pH solution medium. Subsequently, the composite films containing SmPW11 were prepared on quartz substrates and conductive ITO substrates through a layer-by-layer (LbL) assembly method, using PDDA and PEI as molecular linkers. Characterization methods of the composite films include UV-vis spectra, fluorescence spectroscopy, cyclic voltammetry (CV), bulk electrolysis with coulometry, chronoamperometry, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). Finally, in situ UV-vis and fluorescence spectroelectrochemical systems were used to research electrofluorochromic properties for the composite films under electrochemical modulation. The results indicate that the composite films display not only orange luminescence emission but also reversible orange luminescence switching behaviors manipulated by the redox process of tungstophosphate species PW11 via the energy transfer between the orange luminescence component Sm and electroreduced species of tungstophosphate PW11.
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Affiliation(s)
- Wenmei Gao
- College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University , Changchun, 130012, People's Republic of China
| | - Tian Yu
- College of Electrical and Electronic Engineering, Changchun University of Technology , Changchun, 130012, People's Republic of China
| | - Yu Du
- College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University , Changchun, 130012, People's Republic of China
| | - Ruiqiang Wang
- College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University , Changchun, 130012, People's Republic of China
| | - Lixin Wu
- College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University , Changchun, 130012, People's Republic of China
| | - Lihua Bi
- College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University , Changchun, 130012, People's Republic of China
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