Luminescent properties of Ln(III) complexes with 2-[(phenylamino)methylene]-5,5-dimethyl-cyclohexane-1,3-dione as an antenna

Luminescent properties of Ln(III) complexes with 2-[(phenylamino)methylene]-5,5-dimethyl-cyclohexane-1,3-dione as an antenna Full article

Journal

Inorganica Chimica Acta
ISSN: 1873-3255 , E-ISSN: 0020-1693

Output data

Year: 2021, Article number : 525, Pages count : 7 DOI: 10.1016/j.ica.2021.120490

Tags

Lanthanide complexes, Photoluminescence, β-Diketonate, Enaminone, Crystal structures

Authors

Smirnova K.S. ¹ , Ivanova E.A. ^1,2 , Sukhikh T.S. ¹ , Pozdnyakov I.P. ^2,3 , Dotsenko V.V. ⁴ , Lider E.V. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, SB RAS, 3, Acad. Lavrentiev Ave., 630090 Novosibirsk, Russia
2	Novosibirsk State University, 2, Pirogova Str., 630090 Novosibirsk, Russia
3	Voevodsky Institute of Chemical Kinetics and Combustion, SB RAS, Institutskaya 3, 630090 Novosibirsk, Russia
4	Kuban State University, 149, Stavropol’skaya str., 350040 Krasnodar, Russia

Seven lanthanide-based coordination compounds with 2-[(phenylamino)methylene]-5,5-dimethyl-cyclohexane- 1,3-dione were synthesized: [Eu(HL)2(NO3)3] (1), [Sm(HL)2(NO3)3] (2), [Ce(HL)2(NO3)3] (3), [Tm(HL)2Cl3]⋅ H2O (4), [Tb(HL)2Cl3]⋅H2O (5), [Dy(HL)2(H2O)(NO3)3] (6) and [Gd(HL)2Cl3]⋅H2O (7). The obtained Eu(III), Sm (III) and Ce(III) nitrate complexes was established to be isostructural just like Tm(III), Tb(III) and Gd(III) chloride ones. Using X-ray diffraction analysis, the structures of cerium and samarium were determined, which occurred to be polymer chains. On the contrary, the dysprosium compound was mononuclear. Ligand was shown to emit in blue region with quantum yield near 12%. For lanthanide complexes of Eu(III), Sm(III), and Tb(III), during the energy transfer from the ligand triplet state to the central atom, characteristic bands of the metal ion are observed in the emission spectra. The lifetimes and quantum yields of luminescence for these complexes were also determined. For other compounds, no energy transfer is observed due to lower energy of ligand triplet state than corresponding emitting state of the lanthanide ions.

Smirnova K.S. , Ivanova E.A. , Sukhikh T.S. , Pozdnyakov I.P. , Dotsenko V.V. , Lider E.V.
Luminescent properties of Ln(III) complexes with 2-[(phenylamino)methylene]-5,5-dimethyl-cyclohexane-1,3-dione as an antenna
Inorganica Chimica Acta. 2021. 525 :1-7. DOI: 10.1016/j.ica.2021.120490 WOS Scopus РИНЦ OpenAlex

Submitted:	Mar 29, 2021
Accepted:	Jun 2, 2021
Published online:	Jun 4, 2021

Web of science:	WOS:000675728800001
Scopus:	2-s2.0-85107748477
Elibrary:	46813740
OpenAlex:	W3172329086

DB	Citing
OpenAlex	15
Web of science	15
Scopus	13
Elibrary	13