Research output: Contribution to journal › Article › peer-review
Synthesis, structure, and luminescence properties of sodium and ytterbium complexes with 2-(benzothiazol-2-yl)selenophenolate ligands. / Ilichev, V. A.; Balashova, T. V.; Polyakova, S. K. et al.
In: Russian Chemical Bulletin, Vol. 71, No. 2, 02.2022, p. 298-305.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Synthesis, structure, and luminescence properties of sodium and ytterbium complexes with 2-(benzothiazol-2-yl)selenophenolate ligands
AU - Ilichev, V. A.
AU - Balashova, T. V.
AU - Polyakova, S. K.
AU - Rogozhin, A. F.
AU - Kolybalov, D. S.
AU - Bashirov, D. A.
AU - Konchenko, S. N.
AU - Yablonskiy, A. N.
AU - Rumyantcev, R. V.
AU - Fukin, G. K.
AU - Bochkarev, M. N.
N1 - Funding Information: The study was performed within the framework of the state assignment using the equipment of the Center for Collective Use “Analytical Center of the IOMC RAS” with the financial support by the Ministry of Science and Higher Education of the Russian Federation (grant “Ensuring the Development of the Material and Technical Infrastructure of the Centers for Collective Use of Scientific Equipment,” agreement number 13.CKP.21.0017). Publisher Copyright: © 2022, Springer Science+Business Media LLC.
PY - 2022/2
Y1 - 2022/2
N2 - With the aim of designing new heteroorganic ligands capable of sensitizing the metal-centered photoluminescence (PL) of YbIII through the redox mechanism, a new diselenide, 2,2′-(diseleno-2,1-diphenylene)bis[benzothiazole] ((SeSN)2, 1), was synthesized and structurally characterized. The selenophenolate complexes Na(SeSN)(DME)2(2) and Yb(SeSN)3·0.5 THF (3) were synthesized by the reactions of diselenide 1 with Na and Yb metals in liquid ammonia. Complex 2 showed intense PL at 77 K in a DME solution, which appears as a broad band with a maximum at 575 nm assigned to the phosphorescence of the organoselenide ligand. In the crystalline state, ytterbium complex 3, which was isolated and structurally characterized as an adduct with THF, exhibited intense metal-centered PL in the 980–1100 nm region. This PL is observed upon direct excitation or upon excitation through SeSN ligands (250–380 nm), as well as through excitation of the ligand-to-metal charge transfer (LMCT) band in the 430–700 nm region. The presence of low-energy LMCT states capable of sensitizing the metal-centered PL of YbIII in complexes with organoselenide ligands is responsible for a significant reduction of the Stokes shift of luminescence and opens up new prospects for the development of lanthanide-containing infrared luminophores exhibiting luminescence under long-wavelength excitation.
AB - With the aim of designing new heteroorganic ligands capable of sensitizing the metal-centered photoluminescence (PL) of YbIII through the redox mechanism, a new diselenide, 2,2′-(diseleno-2,1-diphenylene)bis[benzothiazole] ((SeSN)2, 1), was synthesized and structurally characterized. The selenophenolate complexes Na(SeSN)(DME)2(2) and Yb(SeSN)3·0.5 THF (3) were synthesized by the reactions of diselenide 1 with Na and Yb metals in liquid ammonia. Complex 2 showed intense PL at 77 K in a DME solution, which appears as a broad band with a maximum at 575 nm assigned to the phosphorescence of the organoselenide ligand. In the crystalline state, ytterbium complex 3, which was isolated and structurally characterized as an adduct with THF, exhibited intense metal-centered PL in the 980–1100 nm region. This PL is observed upon direct excitation or upon excitation through SeSN ligands (250–380 nm), as well as through excitation of the ligand-to-metal charge transfer (LMCT) band in the 430–700 nm region. The presence of low-energy LMCT states capable of sensitizing the metal-centered PL of YbIII in complexes with organoselenide ligands is responsible for a significant reduction of the Stokes shift of luminescence and opens up new prospects for the development of lanthanide-containing infrared luminophores exhibiting luminescence under long-wavelength excitation.
KW - energy transfer
KW - infrared luminescence
KW - ligand-to-metal charge transfer
KW - organoselenium compounds
KW - photoluminescence
KW - ytterbium
UR - http://www.scopus.com/inward/record.url?scp=85128663073&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/7838e2db-2c63-3161-8e64-9bfac61a5548/
U2 - 10.1007/s11172-022-3411-8
DO - 10.1007/s11172-022-3411-8
M3 - Article
AN - SCOPUS:85128663073
VL - 71
SP - 298
EP - 305
JO - Russian Chemical Bulletin
JF - Russian Chemical Bulletin
SN - 1066-5285
IS - 2
ER -
ID: 36029575