Diarylphosphate as a New Route for Design of Highly Luminescent Ln Complexes | Sciact

Diarylphosphate as a New Route for Design of Highly Luminescent Ln Complexes Научная публикация

Журнал

Molecules
ISSN: 1420-3049

Вых. Данные

Год: 2020, Том: 25, Номер: 17, Номер статьи : 3934, Страниц : DOI: 10.3390/molecules25173934

Авторы

Kalugin Alexey E. ^1,2 , Minyaev Mikhail E. ^1,3 , Puntus Lada N. ^1,4 , Taydakov Ilya V. ⁵ , Varaksina Evgenia A. ^1,5 , Lyssenko Konstantin A. ⁶ , Nifant'ev Ilya E. ^1,6 , Roitershtein Dmitrii M. ^1,3,7

Организации

1	A.V. Topchiev Institute of Petrochemical Synthesis RAS, 119991 Moscow, Russia
2	Moscow Institute of Physics and Technology (MIPT), 141701 Dolgoprudnyi, Moscow Region, Russia
3	N.D. Zelinsky Institute of Organic Chemistry, RAS, 119991 Moscow, Russia
4	V.A. Kotel’nikov Institute of Radioengineering and Electronics, RAS, 141190 Fryazino, Moscow Region, Russia
5	P.N. Lebedev Physical Institute, RAS, 119991 Moscow, Russia
6	Chemistry Department, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
7	National Research University Higher School of Economics, 101000 Moscow, Russia

Organophosphate-chloride complexes [{(2,6-iPr2C6H3-O)2POO}2LnCl(CH3OH)4]·2CH3OH, Ln = Nd (1), Eu (2), Gd (3), and Tb (4) have been obtained and structurally characterized. Their reaction with 2,2′:6′,2″-terpyridine leads to the formation of 1:1 adducts ([{(2,6-iPr2C6H3-O)2POO}2LnCl(terpy)(H2O)2(CH3OH)], Ln = Eu (5), Gd (6), Tb (7) with exception of Nd, where tris-diisopropylphenylphosphate complex [{(2,6-iPr2C6H3-O)2POO}3Nd) (terpy)(H2O)(CH3OH)] (8) was obtained due to the ligand metathesis. A bright luminescence observed for the Eu and Tb organophosphate complexes is the first example of an application of organophosphate ligands for 4f-ions luminescence sensitization. Photophysical properties of all complexes were analyzed by optical spectroscopy and an energy transfer scheme was discussed. A combination of two types of ligands into the coordination sphere (phosphate and phenanthroline) allows designing the Eu surrounding with very high intrinsic quantum yield 𝑄𝐸𝑢𝐸𝑢 (0.92) and highly luminescent Ln complexes for both visible and near-infrared (NIR) regions.

Kalugin A.E. , Minyaev M.E. , Puntus L.N. , Taydakov I.V. , Varaksina E.A. , Lyssenko K.A. , Nifant'ev I.E. , Roitershtein D.M.
Diarylphosphate as a New Route for Design of Highly Luminescent Ln Complexes
Molecules. 2020. V.25. N17. 3934 . DOI: 10.3390/molecules25173934 WOS Scopus OpenAlex

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≡ Scopus:	2-s2.0-85090179302
≡ OpenAlex:	W3082523765