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Licensed Unlicensed Requires Authentication Published by De Gruyter December 30, 2021

Efficient photoluminescence from 1-(2-Naphthoyl)-3,3,3-trifluroacetonate complex of Eu3+ with bidentate neutral donors

  • D. B. Ambili Raj EMAIL logo and S. V. Manoj


Two new europium complexes, Eu(NTA)3(bath) and Eu(NTA)3(DPEPO), were synthesized and characterized by elemental analysis, Fourier transform infrared, mass spectrometry, thermogravimetric analysis and photoluminescence spectroscopy. The room-temperature photoluminescence spectra of the Eu3+ complexes are composed of the typical Eu3+ red emission, assigned to transitions between the first excited state (5Δ0) and the multiplet (7F0-4). The results demonstrate that the substitution of water molecules by bidentate oxygen or nitrogen ligands in Eu(NTA)3(H2O)2 richly enhances the overall quantum yield (Φoverall = 12% vs. 87%) and life time values (τobs = 339 vs. 521 μs).

Ambili Raj D. B. Department of Chemistry Sree Narayana College Chempazhanthy Thiruvananthapuram India, Pin: 695587 Tel.: 0471-2592077


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Received: 2020-04-24
Accepted: 2021-09-14
Published Online: 2021-12-30

© 2021 Walter de Gruyter GmbH, Berlin/Boston, Germany

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