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Antenna effect in LnIII nitrates: the role of N-containing aromatic ligands in luminescence enhancement

Lada Nikolaevna Puntus 1, 2
Lada Nikolaevna Puntus
, 
Irina S Pekareva 1
Irina S Pekareva
, 
Konstantin Alexandrovich Lyssenko 2, 3, 4
Konstantin Alexandrovich Lyssenko
1 V. A. Kotel'nikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, 141190 Fryazino, Moscow Region, Russian Federation
3 G. V. Plekhanov Russian University of Economics, 117997 Moscow, Russian Federation
10.71267/mencom.7979
Published 4 June 2026 , received 8 December 2025
Communication , Volume 36, Issue 4, 425-428
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Puntus L. N., Pekareva I. S., Lyssenko K. A. Antenna effect in LnIII nitrates: the role of N-containing aromatic ligands in luminescence enhancement // Mendeleev Communications. 2026. Vol. 36. No. 4. pp. 425-428.
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Puntus L. N., Pekareva I. S., Lyssenko K. A. Antenna effect in LnIII nitrates: the role of N-containing aromatic ligands in luminescence enhancement // Mendeleev Communications. 2026. Vol. 36. No. 4. pp. 425-428.
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TY - JOUR
DO - 10.71267/mencom.7979
UR - https://mendcomm.colab.ws/publications/10.71267/mencom.7979
TI - Antenna effect in LnIII nitrates: the role of N-containing aromatic ligands in luminescence enhancement
T2 - Mendeleev Communications
AU - Puntus, Lada Nikolaevna
AU - Pekareva, Irina S
AU - Lyssenko, Konstantin Alexandrovich
PY - 2026
DA - 2026/06/04
PB - Mendeleev Communications
SP - 425-428
IS - 4
VL - 36
ER -
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@article{2026_Puntus,
author = {Lada Nikolaevna Puntus and Irina S Pekareva and Konstantin Alexandrovich Lyssenko},
title = {Antenna effect in LnIII nitrates: the role of N-containing aromatic ligands in luminescence enhancement},
journal = {Mendeleev Communications},
year = {2026},
volume = {36},
publisher = {Mendeleev Communications},
month = {Jun},
url = {https://mendcomm.colab.ws/publications/10.71267/mencom.7979},
number = {4},
pages = {425--428},
doi = {10.71267/mencom.7979}
}
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Puntus, Lada Nikolaevna, et al. “Antenna effect in LnIII nitrates: the role of N-containing aromatic ligands in luminescence enhancement.” Mendeleev Communications, vol. 36, no. 4, Jun. 2026, pp. 425-428. https://mendcomm.colab.ws/publications/10.71267/mencom.7979.
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Keywords

2,2’-bipyridine
aggregation induced emission
AIE
antenna effect
Charge transfer
crystal structure
energy transfer
lanthanide
luminescence
quantum yield
SICT
supramolecular chemistry
X-ray diffraction
π-stacking

Abstract

Lanthanide nitrates Ln(NO3)3(bpy)2 (Ln = Eu, Tb; bpy = 2.2'-bipyridine) exhibit high photoluminescence quantum yields; 64% (Eu) and 78% (Tb); the energy transfer efficiency is ∼90% in the Eu complex, but exceeds 100% in [Eu(NO3)3(bpy)2]·bpy crystals containing noncoordinated bpy molecules. Using topological analysis of the electron density distribution obtained in a high-resolution X-ray diffraction experiment, the energies of Eu–N and Eu–O bonds and stacking interactions were estimated. A combination of optical and X-ray data enabled for the first time to experimentally identify the stacking-induced charge transfer (SICT) state between coordinated and noncoordinated bpy molecules in [Eu(NO3)3(bpy)2]·bpy crystals; this supramolecular antenna effect accounts for the enhanced sensitization efficiency and overall quantum yield of photoluminescence.

Funders

Russian Science Foundation
22-13-00312-П, 25-13-00131

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