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https://hdl.handle.net/1822/32430
Título: | An interesting ligand for the preparation of luminescent plastics: the picrate ion |
Autor(es): | Zea Bermudez, V. de Carlos, Luís Silva, Maria Manuela Smith, Michael John |
Palavras-chave: | Solid polymer electrolytes Luminescence X-ray diffraction Infrared spectroscopy |
Data: | 2000 |
Editora: | AIP Publishing |
Revista: | Journal of Chemical Physics |
Citação: | de Zea Bermudez, V., Carlos, L. D., Silva, M. M., & Smith, M. J. (2000, February 15). An interesting ligand for the preparation of luminescent plastics: The picrate ion. The Journal of Chemical Physics. AIP Publishing. http://doi.org/10.1063/1.480913 |
Resumo(s): | Electrolytes formed with poly(oxyethylene), POE, and europium picrate [Eu(pic)2(OH2)6]pic.6H2O (where pic denotes the picrate anion) or simply Eu(pic)3xH2O, have been represented by POEnEu(pic)3xH2O (where n represents the molar ratio of (OCH2CH2) units per Eu3+ ion). Materials with n ranging from 133 to 11 have been examined. A tentative attribution of the absorption bands of the mid-infrared spectra is presented. The spectral changes detected in the mid-infrared region and the modifications in the XRD patterns at increasing salt content show that PEOnEu(pic)3xH2O exerts an effective plasticizing role which leads to the complete supression of crystallinity at n = 11. The emission spectra of the complexes and their signature in the vC-O spectral region provide conclusive evidence that the Eu3+ ions are coordinated to the oxygen atoms of the polyether chains over the whole range of compositions studied. The photoluminescence spectra of the PEOnEu(pic)3xH2O electrolytes indicate that the Eu3+/ether oxygen complexation occurs with concomittant partial substitution of the water molecules from the cation coordination shell. The luminescence data obtained |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/32430 |
DOI: | 10.1063/1.480913 |
ISSN: | 0021-9606 |
e-ISSN: | 1089-7690 |
Versão da editora: | https://pubs.aip.org/aip/jcp/article/112/7/3293/1003237/An-interesting-ligand-for-the-preparation-of |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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JChemPhys.pdf | 54,48 kB | Adobe PDF | Ver/Abrir |