{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T15:48:14Z","timestamp":1760888894842},"reference-count":0,"publisher":"Walter de Gruyter GmbH","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2014,2,1]]},"abstract":"<jats:p>The [RE(NTA)(H<jats:sub>2<\/jats:sub>O)<jats:sub>2<\/jats:sub>]\u22c5(H<jats:sub>2<\/jats:sub>O) rare-earth complexes (RE<jats:sup>3+<\/jats:sup>: Eu, Gd, Tb and NTA: nitrilotriacetate) were synthesized and characterized by elemental analysis, thermogravimetry, X-ray diffraction, and infrared spectroscopy. The complexes show high crystallinity and thermostability. The photoluminescence behavior was studied based on the excitation and emission spectra, and luminescence decay curves. The compounds exhibit red (Eu<jats:sup>3+<\/jats:sup>), green (Tb<jats:sup>3+<\/jats:sup>) and UV (Gd<jats:sup>3+<\/jats:sup>) monochromatic emissions under UV excitation. The NTA ligand acts as luminescence sensitizer in the ligand-to- RE<jats:sup>3+<\/jats:sup> intramolecular energy transfer process, owing to the fact that the first excited triplet state (T1: 29 000 cm<jats:sup>\u22121<\/jats:sup>) is located above of the <jats:sup>5<\/jats:sup>D<jats:sub>0<\/jats:sub> (Eu<jats:sup>3+<\/jats:sup>) and <jats:sup>5<\/jats:sup>D<jats:sub>4<\/jats:sub> (Tb<jats:sup>3+<\/jats:sup>) emitting levels. The experimental intensity parameters \u03a9\u03bb (\u03bb: 2 and 4) for the Eu<jats:sup>3+<\/jats:sup> NTA complex were calculated, and the results are discussed. The Gd<jats:sup>3+<\/jats:sup>-NTA complex exhibits a high-intensity emission band in the UV region (32 000 cm<jats:sup>\u22121<\/jats:sup>) assigned to the <jats:sup>6<\/jats:sup>P<jats:sub>7\/2<\/jats:sub>\u2192<jats:sup>8<\/jats:sup>S<jats:sub>7\/2 <\/jats:sub>intraconfigurational transition. <\/jats:p>","DOI":"10.5560\/znb.2014-3263","type":"journal-article","created":{"date-parts":[[2014,2,14]],"date-time":"2014-02-14T15:55:03Z","timestamp":1392393303000},"page":"231-238","source":"Crossref","is-referenced-by-count":6,"title":["Red (Eu<sup>3+<\/sup>), Green (Tb<sup>3+<\/sup>) and Ultraviolet (Gd<sup>3+<\/sup>) Emitting Nitrilotriacetate Complexes Prepared by One-step Synthesis"],"prefix":"10.1515","volume":"69","author":[{"given":"Ivan G. N.","family":"Silva","sequence":"first","affiliation":[{"name":"Departamento de Qu\u00edmica Fundamental, Instituto de Qu\u00edmica da Universidade de S\u00e3o Paulo, 05508-900, S\u00e3o Paulo, SP, Brazil"}]},{"given":"Hermi F.","family":"Brito","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Fundamental, Instituto de Qu\u00edmica da Universidade de S\u00e3o Paulo, 05508-900, S\u00e3o Paulo, SP, Brazil"}]},{"given":"Ernesto R.","family":"Souza","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Fundamental, Instituto de Qu\u00edmica da Universidade de S\u00e3o Paulo, 05508-900, S\u00e3o Paulo, SP, Brazil"}]},{"given":"Danilo","family":"Mustafa","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Fundamental, Instituto de Qu\u00edmica da Universidade de S\u00e3o Paulo, 05508-900, S\u00e3o Paulo, SP, Brazil"}]},{"given":"Maria C. F. C.","family":"Felinto","sequence":"additional","affiliation":[{"name":"Instituto de Pesquisas Energ\u00e9ticas e Nucleares, IPEN, Cidade Universit\u00e1ria, 05508-000, S\u00e3o Paulo, SP, Brazil"}]},{"given":"Luis D.","family":"Carlos","sequence":"additional","affiliation":[{"name":"Department of Physics, CICECO, University of Aveiro, Campus, Universit\u00e1rio de Santiago, 3810\u2013193, Aveiro, Portugal"}]},{"given":"Oscar L.","family":"Malta","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Fundamental, CCEN, Universidade Federal da Pernambuco, 50670-901, Recife, PE, Brazil"}]}],"member":"374","published-online":{"date-parts":[[2014,6,2]]},"container-title":["Zeitschrift f\u00fcr Naturforschung B"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.degruyter.com\/view\/journals\/znb\/69\/2\/article-p231.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.5560\/znb.2014-3263\/xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.5560\/znb.2014-3263\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,6,23]],"date-time":"2021-06-23T12:32:31Z","timestamp":1624451551000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.5560\/znb.2014-3263\/html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,2,1]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2014,6,2]]},"published-print":{"date-parts":[[2014,2,1]]}},"alternative-id":["10.5560\/znb.2014-3263"],"URL":"https:\/\/doi.org\/10.5560\/znb.2014-3263","relation":{},"ISSN":["1865-7117","0932-0776"],"issn-type":[{"value":"1865-7117","type":"electronic"},{"value":"0932-0776","type":"print"}],"subject":[],"published":{"date-parts":[[2014,2,1]]}}}