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Perju E, Ghimpu L, Hitruc G, Harabagiu V, Bruma M, Marin L. Organic–inorganic hybrid nanomaterials based on inorganic oxides and a mesomorphic polyazomethine. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315584172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Organic–inorganic hybrid materials have been obtained by impregnating a mesomorphic polyazomethine into a porous inorganic matrix of zinc oxide (ZnO), tin dioxide (SnO2), or mixed ZnO/SnO2. The porous inorganic matrix has been obtained by magnetron sputtering technique and proved a very high crystallinity degree. The resulting hybrid materials were characterized from morphological and optical points of view by scanning electron microscopy, atomic force microscopy, and ultraviolet-visible and photoluminescence spectroscopy. The inorganic matrix itself exhibited a highly rough surface, which became smoother after polymer impregnation, indicating its complete coverage. The violet emission of the separate inorganic and organic components turned into a blue and green light emission, respectively, of the hybrid materials, suggesting the possibility to modulate the color of emitted light by the simple choice of the inorganic matrix. Considerations with regard of interface phenomena that prompted the photophysical changes of the hybrid materials were done.
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Affiliation(s)
- Elena Perju
- “Petru Poni” Institute of Macromolecular Chemistry, Iaşi, Romania
| | - Lidia Ghimpu
- Institute of Electronic Engineering and Nanotechnologies of ASM, Chisinau, Republic of Moldova
| | - Gabriela Hitruc
- “Petru Poni” Institute of Macromolecular Chemistry, Iaşi, Romania
| | | | - Maria Bruma
- “Petru Poni” Institute of Macromolecular Chemistry, Iaşi, Romania
| | - Luminita Marin
- “Petru Poni” Institute of Macromolecular Chemistry, Iaşi, Romania
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Iwan A, Janeczek H, Domanski M, Rannou P. Synthesis, characterization and mesomorphic properties of new unsymmetrical azomethine-type liquid crystals derived from 4-biphenyl carboxaldehyde. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2009.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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