Research output: Contribution to journal › Article › peer-review
Crystal structures, thermal and luminescent properties of gadolinium(Iii) trans-1,4-cyclohexanedicarboxylate metal-organic frameworks. / Demakov, Pavel A.; Vasileva, Alena A.; Lazarenko, Vladimir A. et al.
In: Crystals, Vol. 11, No. 11, 1375, 11.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Crystal structures, thermal and luminescent properties of gadolinium(Iii) trans-1,4-cyclohexanedicarboxylate metal-organic frameworks
AU - Demakov, Pavel A.
AU - Vasileva, Alena A.
AU - Lazarenko, Vladimir A.
AU - Ryadun, Alexey A.
AU - Fedin, Vladimir P.
N1 - Funding Information: Funding: The research was supported by the Ministry of Science and Higher Education of the Russian Federation, No. 121031700321-3 and No. 121031700321-8. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/11
Y1 - 2021/11
N2 - Four new gadolinium(III) metal-organic frameworks containing 2,2′-bipyridyl (bpy) or 1,10-phenanthroline (phen) chelate ligands and trans-1,4-cyclohexanedicarboxylate (chdc2− ) were synthesized. Their crystal structures were determined by single-crystal X-ray diffraction analysis. All four coordination frameworks are based on the binuclear carboxylate building units. In the compounds [Gd2 (bpy)2 (chdc)3 ]·H2 O (1) and [Gd2 (phen)2 (chdc)3 ]·0.5DMF (2), the six-connected {Ln2 (L)2 (OOCR)6 } blocks form a 3D network with the primitive cubic (pcu) topology. In the compounds [Gd2 (NO3 )2 (phen)2 (chdc)2 ]·2DMF (3) and [Gd2 Cl2 (phen)2 (chdc)2 ]·0.3DMF·2.2dioxane (4), the four-connected {Ln2 (L)2 (X)2 OOCR)4 } units (where X = NO3− for 3 or Cl− for 4) form a 2D square-grid (sql) network. The solid-state luminescent properties were investigated for the synthesized frameworks. Bpy-containing compound 1 shows no luminescence, possibly due to the paramagnetic quenching by Gd3+ cation. In contrast, the phenathroline-containing MOFs 2–4 possess yellow emission under visible excitation (λex = 460 nm) with the tuning of the characteristic wavelength by the coordination environment of the metal center.
AB - Four new gadolinium(III) metal-organic frameworks containing 2,2′-bipyridyl (bpy) or 1,10-phenanthroline (phen) chelate ligands and trans-1,4-cyclohexanedicarboxylate (chdc2− ) were synthesized. Their crystal structures were determined by single-crystal X-ray diffraction analysis. All four coordination frameworks are based on the binuclear carboxylate building units. In the compounds [Gd2 (bpy)2 (chdc)3 ]·H2 O (1) and [Gd2 (phen)2 (chdc)3 ]·0.5DMF (2), the six-connected {Ln2 (L)2 (OOCR)6 } blocks form a 3D network with the primitive cubic (pcu) topology. In the compounds [Gd2 (NO3 )2 (phen)2 (chdc)2 ]·2DMF (3) and [Gd2 Cl2 (phen)2 (chdc)2 ]·0.3DMF·2.2dioxane (4), the four-connected {Ln2 (L)2 (X)2 OOCR)4 } units (where X = NO3− for 3 or Cl− for 4) form a 2D square-grid (sql) network. The solid-state luminescent properties were investigated for the synthesized frameworks. Bpy-containing compound 1 shows no luminescence, possibly due to the paramagnetic quenching by Gd3+ cation. In contrast, the phenathroline-containing MOFs 2–4 possess yellow emission under visible excitation (λex = 460 nm) with the tuning of the characteristic wavelength by the coordination environment of the metal center.
KW - Coordination polymers
KW - Gadolinium
KW - Luminescence
KW - Metal-organic frameworks
KW - Rare earth elements
UR - http://www.scopus.com/inward/record.url?scp=85119614983&partnerID=8YFLogxK
U2 - 10.3390/cryst11111375
DO - 10.3390/cryst11111375
M3 - Article
AN - SCOPUS:85119614983
VL - 11
JO - Crystals
JF - Crystals
SN - 2073-4352
IS - 11
M1 - 1375
ER -
ID: 34744541