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Zhang X, Wang X, Zhang Y, Wang Z, Wang Y, Hu F. Influence of heating temperature on the optical response properties and surface relief patterns of TiO 2/GeO 2/ormosils composite films containing azobenzene. APPLIED OPTICS 2022; 61:7671-7676. [PMID: 36256367 DOI: 10.1364/ao.471628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 08/22/2022] [Indexed: 06/16/2023]
Abstract
With the progress of modern integrated optical technology, organic-inorganic composite materials have been widely used in integrated optoelectronic devices. Because of satisfying optical response properties among azobenzene, it will be an ideal choice to introduce the material into organic-inorganic composite materials. TiO2/GeO2/ormosils composite films containing azobenzene were prepared by combining the solgel technique with the spin-coating process. The optical transmission modes and loss of as-prepared samples at different transmission wavelengths were researched by a prism coupler. The result shows that the composite film is multi-mode transmission at the transmission wavelength of 633 nm and single-mode transmission at 1538 nm. The transmission loss is sufficient for applications in optical elements. The response properties and Fourier transform infrared spectroscopy of as-prepared samples at different heating temperatures were also studied. The composite films obtained at 50°C have the best optical response properties. Furthermore, the banding energy and chemical composition among the films were measured through x-ray photoelectron spectroscopy. Finally, the surface topography of as-prepared samples was observed by atomic force microscopy. The surface of the composite film appears with patterns of relief under the appropriate temperature. The above results show that the as-prepared TiO2/GeO2/ormosils composite films containing azobenzene will be a kind of ideal material in the field of integrated optics applications.
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Grzhegorzhevskii KV, Denikaev AA, Morozova MM, Pryakhina VI, Khairullina EE, Tumkin I, Taniya OS, Ostroushko A. The precise modification of nanoscaled Keplerate-type polyoxometalate with NH2-groups: reactive sites, mechanisms and dye conjugation. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01454d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interaction of alkoxysilanes with nanoscaled giant polyoxoclusters is a challenging route for efficiently building blocks for supramolecular smart-tune design. 3-aminopropyltrimethoxysilane (APTMS) treatment grafts amino groups onto the surface of...
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Ebert M, Carrasco I, Dumait N, Frey W, Baro A, Zens A, Lehmann M, Taupier G, Cordier S, Jacques E, Molard Y, Laschat S. Joint Venture of Metal Cluster and Amphiphilic Cationic Minidendron Resulting in Near Infrared Emissive Lamellar Ionic Liquid Crystals. Chemistry 2021; 28:e202103446. [PMID: 34766393 PMCID: PMC9300031 DOI: 10.1002/chem.202103446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Indexed: 12/15/2022]
Abstract
Inorganic red‐NIR emissive materials are particularly relevant in many fields like optoelectronic, bioimaging or solar cells. Benefiting from their emission in devices implies their integration in easy‐to‐handle materials like liquid crystals, whose long‐range ordering and self‐healing abilities could be exploited and influence emission. Herein, we present red‐NIR emissive hybrid materials obtained with phosphorescent octahedral molybdenum cluster anions electrostatically associated with amphiphilic guanidinium minidendrons. Polarized optical microscopy and X‐ray analysis show that while the minidendron chloride salts self‐organize into columnar phases, their association with the dianionic metal cluster leads to layered phases. Steady‐state and time‐resolved emission investigations demonstrate the influence of the minidendron alkyl chain length on the phosphorescence of the metal cluster core.
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Affiliation(s)
- Max Ebert
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Irene Carrasco
- Université de Rennes 1, CNRS, ISCR-UMR 6226, ScanMAT-UMS 2001, IETR-UMR 6164, 35000, Rennes, France
| | - Noée Dumait
- Université de Rennes 1, CNRS, ISCR-UMR 6226, ScanMAT-UMS 2001, IETR-UMR 6164, 35000, Rennes, France
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Angelika Baro
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Anna Zens
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Matthias Lehmann
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Center for Nanosystems, Chemistry and Bavarian Polymer Institute, Theodor-Boveri-Weg 4, 97074, Würzburg, Germany
| | - Gregory Taupier
- Université de Rennes 1, CNRS, ISCR-UMR 6226, ScanMAT-UMS 2001, IETR-UMR 6164, 35000, Rennes, France
| | - Stephane Cordier
- Université de Rennes 1, CNRS, ISCR-UMR 6226, ScanMAT-UMS 2001, IETR-UMR 6164, 35000, Rennes, France
| | - Emmanuel Jacques
- Université de Rennes 1, CNRS, ISCR-UMR 6226, ScanMAT-UMS 2001, IETR-UMR 6164, 35000, Rennes, France
| | - Yann Molard
- Université de Rennes 1, CNRS, ISCR-UMR 6226, ScanMAT-UMS 2001, IETR-UMR 6164, 35000, Rennes, France
| | - Sabine Laschat
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
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