Research output: Contribution to journal › Article › peer-review
Structure and luminescent properties of coordination polymers containing lead(II) and thiophene ligands. / Dubskikh, V. A.; Lysova, A. A.; Samsonenko, D. G. et al.
In: Journal of Structural Chemistry, Vol. 61, No. 11, 11.2020, p. 1800-1809.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Structure and luminescent properties of coordination polymers containing lead(II) and thiophene ligands
AU - Dubskikh, V. A.
AU - Lysova, A. A.
AU - Samsonenko, D. G.
AU - Samsonov, V. A.
AU - Ryadun, A. A.
AU - Dybtsev, D. N.
AU - Fedin, V. P.
N1 - Funding Information: The work was supported by the Russian Science Foundation (grant No. 18-13-00203). Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11
Y1 - 2020/11
N2 - Three new metal-organic framework polymers [Pb2(btdc)2] (1), [Pb3(ttdc)3(dma)2] (2), and [Pb(ttdc)(dma)] (3) (H2btdc = 2,2′-bithiophene-5,5′-dicarboxylic acid, H2ttdc = thieno[3,2-b]thiophene-2,5-dicarboxylic acid, dma = N,N-dimethylacetamide) are synthesized under solvatothermal conditions. The compounds are characterized by single crystal and powder X-ray diffraction, elemental, thermogravimetric, and IR spectroscopic analyses. All three compounds are three-dimensional coordination polymers with layered (1) or chain (2, 3) motifs. The study of luminescent properties reveals the intraligand nature of radiative transitions. For 1 luminescence quenching is observed because of the strengthening of vibrational states and long-range interactions between π-systems of thiophene groups. The luminescence spectrum of 2 contains two bands corresponding to two types of ttdc2– ligands with principally different structural environments. For the ligands isolated from each other the position of the luminescence maximum corresponds to that of the free ttdc2– ion. For the ligands associated in closely packed chains by continuous π-stacking the appearance of a new maximum in the red range is observed, which is due to the delocalization of electron orbitals.
AB - Three new metal-organic framework polymers [Pb2(btdc)2] (1), [Pb3(ttdc)3(dma)2] (2), and [Pb(ttdc)(dma)] (3) (H2btdc = 2,2′-bithiophene-5,5′-dicarboxylic acid, H2ttdc = thieno[3,2-b]thiophene-2,5-dicarboxylic acid, dma = N,N-dimethylacetamide) are synthesized under solvatothermal conditions. The compounds are characterized by single crystal and powder X-ray diffraction, elemental, thermogravimetric, and IR spectroscopic analyses. All three compounds are three-dimensional coordination polymers with layered (1) or chain (2, 3) motifs. The study of luminescent properties reveals the intraligand nature of radiative transitions. For 1 luminescence quenching is observed because of the strengthening of vibrational states and long-range interactions between π-systems of thiophene groups. The luminescence spectrum of 2 contains two bands corresponding to two types of ttdc2– ligands with principally different structural environments. For the ligands isolated from each other the position of the luminescence maximum corresponds to that of the free ttdc2– ion. For the ligands associated in closely packed chains by continuous π-stacking the appearance of a new maximum in the red range is observed, which is due to the delocalization of electron orbitals.
KW - luminescence
KW - metal-organic coordination polymers
KW - single crystal X-ray diffraction analysis
KW - RATIONAL SYNTHESIS
UR - http://www.scopus.com/inward/record.url?scp=85098006635&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/7f340d75-6a10-32d1-a8bc-f506be15a0da/
U2 - 10.1134/S002247662011013X
DO - 10.1134/S002247662011013X
M3 - Article
AN - SCOPUS:85098006635
VL - 61
SP - 1800
EP - 1809
JO - Journal of Structural Chemistry
JF - Journal of Structural Chemistry
SN - 0022-4766
IS - 11
ER -
ID: 27330297