Л. Н. Пунтус, Е. А. Вараксина, K.А. Лысенко, Д. М. Ройтерштейн
{"title":"4f^n-4f-=SUP=-n-1-=/SUP=-d-переходы в оптических спектрах трис(1,2,4-трифенилциклопентадиенильных)-комплексов трехвалентных лантанидов","authors":"Л. Н. Пунтус, Е. А. Вараксина, K.А. Лысенко, Д. М. Ройтерштейн","doi":"10.21883/os.2023.04.55558.78-22","DOIUrl":null,"url":null,"abstract":"Tris complexes of Ln3+ ions (Ln = La, Ce, Pr) with triphenyl-substituted cyclopentadienyl ligands were studied by optical spectroscopy. Emission of both 5d - 4f and 4f - 4f transitions was observed for Pr3+ complex. It was found that the strength of the crystal field formed by triphenyl-substituted cyclopentadienyl ligands in tris complexes is comparable to the case of sulfides, and as a result, red luminescence is observed for the Ce3+ compound. The quantum yield of photoluminescence is 20% for the latter.","PeriodicalId":24059,"journal":{"name":"Оптика и спектроскопия","volume":"46 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Оптика и спектроскопия","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21883/os.2023.04.55558.78-22","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Tris complexes of Ln3+ ions (Ln = La, Ce, Pr) with triphenyl-substituted cyclopentadienyl ligands were studied by optical spectroscopy. Emission of both 5d - 4f and 4f - 4f transitions was observed for Pr3+ complex. It was found that the strength of the crystal field formed by triphenyl-substituted cyclopentadienyl ligands in tris complexes is comparable to the case of sulfides, and as a result, red luminescence is observed for the Ce3+ compound. The quantum yield of photoluminescence is 20% for the latter.
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