Emission enhancement in terbium-Ruhemann's purple complexes.
Luminescent lanthanide ions such as Eu3+ and Tb3+ show emission enhancement, when complexed with Ruhemann's Purples (RPs, reaction products of ninhydrin and ninhydrin analogs with amino acids) via intramolecular energy transfer from the RP ligands (good absorbers) to the ions Eu3+ and Tb+3 (efficient emitters). The authors present the optical spectroscopic features (absorption, excitation, and emission spectra) of the complexes formed with RPs and Tb. The emission lifetimes of these complexes are also addressed.
Maitre de Conferences, University Cady Ayyad, Faculty of Sciences, Physics Department, Marrakech, Morocco.
I M
IM
Alaoui
R E
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Menzel
D000042:Absorption; D005069:Evaluation Studies as Topic; D005453:Fluorescence; D006207:Half-Life; D008024:Ligands; D018499:Linear Energy Transfer; D008163:Luminescent Measurements; D008674:Metals, Rare Earth / Q000737:chemistry*; D009555:Ninhydrin / Q000031:analogs & derivatives / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods; D013725:Terbium / Q000737:chemistry*
D008024:Ligands; D008674:Metals, Rare Earth; D013725:Terbium; D009555:Ninhydrin