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Issue 10, 2012
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Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

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Abstract

The series of homoleptic tetranuclear [Ln4(L)2(HL)2(NO3)2(OH)2]·2(NO3) (Ln = Nd, 1; Ln = Yb, 2; Ln = Er, 3; Ln = Gd, 4) have been self-assembled from the reaction of the Salen-type Schiff-base ligand H222L with Ln(NO3)3·6H2O (Ln = Nd, Yb, Er or Gd), respectively (H222L: N,N′-bis(salicylidene)cyclohexane-1,2-diamine). The result of their photophysical properties shows that the strong and characteristic NIR luminescence for complexes 1 and 2 with emissive lifetimes in microsecond ranges are observed and the sensitization arises from the excited state (both 1LC and 3LC) of the Salen-type Schiff-base ligand with the flexible linker.

Graphical abstract: Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

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Publication details

The article was received on 23 Nov 2011, accepted on 02 Mar 2012 and first published on 29 Mar 2012


Article type: Paper
DOI: 10.1039/C2CE06566E
Citation: CrystEngComm, 2012,14, 3456-3463
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    Near-infrared (NIR) luminescent homoleptic lanthanide Salen complexes Ln4(Salen)4 (Ln = Nd, Yb or Er)

    W. Feng, Y. Zhang, X. Lü, Y. Hui, G. Shi, D. Zou, J. Song, D. Fan, W. Wong and R. A. Jones, CrystEngComm, 2012, 14, 3456
    DOI: 10.1039/C2CE06566E

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