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Issue 22, 2014
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Synthesis, structure and luminescence properties of a cadmium(ii)-based coordination polymer with (S)-4,4′-bis(4-carboxyphenyl)-2,2′-bis(diphenylphosphinoyl)-1,1′-binaphthyl as chiral linker

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Abstract

Solvothermal reaction of cadmium(II) nitrate with (S)-4,4′-bis(4-carboxyphenyl)-2,2′-bis(diphenylphosphinoyl)-1,1′-binaphthyl (H2L) in dimethylformamide (dmf) gave the two-dimensional chiral coordination polymer [{Cd2(L)2(H2O)}·18 dmf]n (1), which is thermally stable up to 400 °C according to DTA/TG analysis. According to single-crystal X-ray analysis, 1 forms layers in the [[1 with combining macron]01] direction, which are relatively well separated from each other. Compound 1 exhibits ligand-based bluish luminescence, assigned to the S1→S0 transition of the aromatic units in L. Emission spectra consist of nearly Gaussian shaped bands with maxima at 25 574 and 24 767 cm−1 for H2L and 1, respectively. Quantum efficiency reaches a remarkably high value of 42% for the Cd-based coordination polymer and 33% for the respective ligand. Emission intensity of 1 increases from 10 K to room temperature and decreases exponentially for temperatures up to 650 K.

Graphical abstract: Synthesis, structure and luminescence properties of a cadmium(ii)-based coordination polymer with (S)-4,4′-bis(4-carboxyphenyl)-2,2′-bis(diphenylphosphinoyl)-1,1′-binaphthyl as chiral linker

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Supplementary files

Article information


Submitted
17 Dec 2013
Accepted
01 Feb 2014
First published
03 Feb 2014

This article is Open Access

Dalton Trans., 2014,43, 8188-8195
Article type
Paper
Author version available

Synthesis, structure and luminescence properties of a cadmium(II)-based coordination polymer with (S)-4,4′-bis(4-carboxyphenyl)-2,2′-bis(diphenylphosphinoyl)-1,1′-binaphthyl as chiral linker

W. W. Lestari, H. C. Streit, P. Lönnecke, C. Wickleder and E. Hey-Hawkins, Dalton Trans., 2014, 43, 8188
DOI: 10.1039/C3DT53543F

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