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Issue 43, 2017
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Tuning the structure and Zn(II) sensing of lanthanide complexes with two phenylimidazophenanthrolines by acetonitrile hydrolysis

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Abstract

Exploring lanthanide complexes as luminescence sensors is an interesting topic. By utilizing 2-(4-carboxyphenyl)imidazo[4,5-f][1,10]phenanthroline (Hcpip) and 2-phenylimidazo[4,5-f][1,10]phenanthroline (pip), two series of lanthanide complexes, one-dimensional [Ln2(cpip)2(OAc)4]n (1-Ln; Ln = Sm, Eu) and zero-dimensional [Ln2(pip)2(OAc)6] (0-Ln; Ln = Sm, Eu, Tb, Dy), have been synthesized and crystallographically characterized. The in situ hydrothermal hydrolysis of acetonitrile yields the acetate anions. For both series, the main feature is the existence of [Ln2(μ-η12-COO)2(μ-η11-OAc)22-OAc)2] subunits, in which μ-η12-COO refers to the carboxylate group when the ditopic Hcpip is used, but in the case of the monotopic pip, μ-η12-COO comes from the acetate. Insoluble polymeric 1-Eu in its water suspension exhibits specific but slow luminescence response (emission colour changes from red to bluish green). As an improvement, the dimeric 0-Eu is soluble in DMSO and shows the luminescence response immediately.

Graphical abstract: Tuning the structure and Zn(ii) sensing of lanthanide complexes with two phenylimidazophenanthrolines by acetonitrile hydrolysis

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Publication details

The article was received on 31 Aug 2017, accepted on 03 Oct 2017 and first published on 03 Oct 2017


Article type: Paper
DOI: 10.1039/C7CE01576C
Citation: CrystEngComm, 2017,19, 6533-6539
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    Tuning the structure and Zn(II) sensing of lanthanide complexes with two phenylimidazophenanthrolines by acetonitrile hydrolysis

    X. Zhou, J. Peng, C. Wen, Z. Liu, X. Wang, J. Wu and Y. Ou, CrystEngComm, 2017, 19, 6533
    DOI: 10.1039/C7CE01576C

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