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Tuning structure and Zn(II) sensing of lanthanide complexes with two phenylimidazophenanthrolines by acetonitrile hydrolysis

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 cystallographically characterized. The in situ hydrothermal hydrolysis of acetonitrile yields the acetate anions. For both series the main feature is the existence of [Ln2(μ-η1:η2-COO)2(μ-η1:η1-OAc)2(η2-OAc)2] subunits, in which the μ-η1:η2-COO– refers to the carboxylate group when the ditopic Hcpip is used, but in the case of the monotopic pip, the μ-η1:η2-COO– comes from the acetate. The insoluble polymeric 1-Eu in its water suspension exhibits specific but slow luminescence response (emission colour changes from red to blueish green). As an improvement, the dimeric 0-Eu is soluble in DMSO and shows the luminescence response immediately.

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Publication details

The article was accepted on 03 Oct 2017 and first published on 03 Oct 2017


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

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

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