Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/19604
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dc.contributor.authorNolasco, Mariela M.pt
dc.contributor.authorVaz, Patricia M.pt
dc.contributor.authorVaz, Pedro D.pt
dc.contributor.authorFerreira, Rute A. S.pt
dc.contributor.authorLima, Patricia P.pt
dc.contributor.authorCarlos, Luis D.pt
dc.date.accessioned2017-12-07T19:18:26Z-
dc.date.issued2014pt
dc.identifier.issn0095-8972pt
dc.identifier.urihttp://hdl.handle.net/10773/19604-
dc.description.abstractThe -substituted -diketonate [Ln(3Cl-acac)(3)(H2O)(2)] [Ln=Tb, Gd] complexes (with 3Cl-acac(-) being 3-chloro-2,4-pentanedionate) were characterized by elemental analysis, infrared, ultraviolet (UV)-visible and photoluminescence spectroscopies. For comparison purposes regarding photoluminescence, the well-known [Tb(acac)(3)(H2O)(2)] complex was also synthesized. By considering the phosphorescence spectra of [Gd(3Cl-acac)(3)(H2O)(2)], the effect of chloride replacement of hydrogen on the triplet state energy of the 3Cl-acac ligand was revealed. To support the interpretation and rationalization of the experimental results, Time-dependent DFT calculations were performed on Tb(3Cl-acac)(3)(H2O)(2). Additionally, the possibility of Tb(3Cl-acac)(3)(H2O)(2) to be used as potential green-emitting phosphor material for solid-sate light emitting diodes was evaluated. A prototype was successfully fabricated coating a near-UV LED (370nm) with the Tb(3Cl-acac)(3)(H2O)(2) complex.pt
dc.language.isoengpt
dc.publisherTAYLOR & FRANCIS LTDpt
dc.relationinfo:eu-repo/grantAgreement/FCT/COMPETE/132936/PTpt
dc.rightsrestrictedAccesspor
dc.subjectRARE-EARTHpt
dc.subjectENERGY-TRANSFERpt
dc.subjectQUANTUM YIELDpt
dc.subjectLUMINESCENCEpt
dc.subjectCOMPLEXpt
dc.subjectPHOSPHORSpt
dc.subjectDENSITYpt
dc.subjectLIGANDpt
dc.subjectDIPHENYLETHYNEpt
dc.subjectTERBIUM(III)pt
dc.titleA green- emitting a- substituted a- diketonate Tb3+phosphor for ultraviolet LED- based solid- statept
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage4076pt
degois.publication.issue23-24pt
degois.publication.lastPage4089pt
degois.publication.titleJOURNAL OF COORDINATION CHEMISTRYpt
degois.publication.volume67pt
dc.date.embargo10000-01-01-
dc.relation.publisherversion10.1080/00958972.2014.969722pt
dc.identifier.doi10.1080/00958972.2014.969722pt
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