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2篇 您的检索式:作者名="M.Karbowiak"
    题名 作者 年代 出处 被引量
1Influence of coating on the photoluminescence of Tb^3+ doped ZnSe/ZnS core-shell quantum dots显示文摘Tb^(3+)-doped ZnSe and ZnSe/ZnS nanocrystals were synthesized using modified hot-injection method.The observation of the characteristic quantum dots absorption features in a time-gated excitation spectrum was recorded while monitoring Tb^(3+) emission at 545 nm provided direct evidence for successful incorporation of dopant ions into semiconductor host.Relatively long decay time(~1.5 ms) of Tb^(3+) emission indicated that dopant ions were well protected from interaction with surface ligands.Emission properties of core ZnSe:Tb^(3+) nanocrystals were only slightly modified upon growth of ZnS shell..J.Cichos M.Karbowiak D.Hreniak W.Strek 2016Journal of Rare Earths2016,34,8:1
2Interaction of TbCl_3 and lanthanide complexes with poly(N-vinylpyrrolidone)显示文摘The interaction of TbCl3 and lanthanide(III) β-diketonate complexes with poly(N-vinylpyrrolidone)(PVP) polymer was studied using fluorescence spectroscopy. In the presence of PVP the emission of Tb3+ in ethanolic solution of TbCl3 significantly increased owing to the excitation energy transfer from PVP to Tb3+ ions, which was more efficient as compared to a direct excitation of the Tb3+ 4f75d1 levels. In contrast, emission of NEt4Tb(hfa)4 and NEt4Eu(hfa)4 complexes was almost completely quenched in solution containing PVP. The PVP bound both Ln3+ ions and hfa ligands which caused decomposition of Ln-hfa complexes and switched off the excitation energy transfer from the ligand to the emitting Ln3+ ion. The important role of hydrogen bonds in stabilization of interaction of hfa ligands with PVP was indicated.M.Karbowiak J.Cichos K.Buczko 2014Journal of Rare Earths2014,32,3:0
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