A phosphorescent copper( i ) coordination polymer with sodium 3,5-dimethyl-4-sulfonate pyrazolate

A phosphorescent copper( i ) coordination polymer with the sodium salt of 3,5-dimethyl-4-sulfonate pyrazole ( HL Na ) has been prepared and structurally characterized. The presence of the SO 3 Na substituent in position 4 of the pyrazole ring led to a 3D polymeric species in which an organic/inorgan...

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Bibliographic Details
Published in:CrystEngComm 2017, Vol.19 (40), p.6020-6027
Main Authors: Attilio Ardizzoia, G., Brenna, Stefano, Civati, Francesco, Colombo, Valentina, Sironi, Angelo
Format: Article
Language:English
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Summary:A phosphorescent copper( i ) coordination polymer with the sodium salt of 3,5-dimethyl-4-sulfonate pyrazole ( HL Na ) has been prepared and structurally characterized. The presence of the SO 3 Na substituent in position 4 of the pyrazole ring led to a 3D polymeric species in which an organic/inorganic/organic sandwich motif is observed and repeated along the a axis through zig-zag chains of linear coordinated Cu( i ) ions. The inorganic core of the sandwich consists of a trapezoidal grid of Na-ions interconnected by μ-(κO;κ 2 -O ′ ,O ′′ )-bridging sulfonates and bridging water molecules; H-bonds can be also found between water molecules and SO 3 − groups. In the solid state, the copper derivative showed an interesting phosphorescent behavior when irradiated with UV light, with a yellow emission (570 nm) and a good absolute quantum yield ( Φ PL = 0.44), together with a remarkable Stokes shift of 2.50 eV.
ISSN:1466-8033
1466-8033
DOI:10.1039/C7CE01404J