Near-infrared photoluminescence of lanthanide complexes containing the hemicyanine chromophore

R. Van Deun; Peter Nockemann; T.N. Parac-Vogt; K. Van Hecke; L. Van Meervelt; C. Gorller-Walrand; K. Binnemans

doi:10.1016/j.poly.2007.08.005

Near-infrared photoluminescence of lanthanide complexes containing the hemicyanine chromophore

R. Van Deun, Peter Nockemann, T.N. Parac-Vogt, K. Van Hecke, L. Van Meervelt, C. Gorller-Walrand, K. Binnemans

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The near-infrared luminescence properties of three (E)-N-hexadecyl-N',N'-dimethylamino-stilbazolium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato) lanthanide(III) complexes are described. These three complexes, containing trivalent neodymium, erbium and ytterbium, respectively, show near-infrared luminescence in acetonitrile solution upon UV irradiation. Luminescence decay times have been measured. The complexes consist of a positively charged hemicyanine chromophore with a long alkyl chain and a tetrakis(pyrazolonato) lanthanide(III) anion. Because of the absence of an alpha-hydrogen atom in the pyrazolonato ligands, and because of the saturation of the coordination sphere by four bidentate ligands, the luminescence properties are enhanced when compared to, e.g. quinolinate complexes. (C) 2007 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	5441-5447
Number of pages	7
Journal	Polyhedron
Volume	26
Issue number	18
DOIs	https://doi.org/10.1016/j.poly.2007.08.005
Publication status	Published - 20 Nov 2007

ASJC Scopus subject areas

Biochemistry
Inorganic Chemistry
Physical and Theoretical Chemistry
Materials Chemistry

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10.1016/j.poly.2007.08.005

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@article{47dd4e67e2a04c538edd28bb24206120,

title = "Near-infrared photoluminescence of lanthanide complexes containing the hemicyanine chromophore",

abstract = "The near-infrared luminescence properties of three (E)-N-hexadecyl-N',N'-dimethylamino-stilbazolium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato) lanthanide(III) complexes are described. These three complexes, containing trivalent neodymium, erbium and ytterbium, respectively, show near-infrared luminescence in acetonitrile solution upon UV irradiation. Luminescence decay times have been measured. The complexes consist of a positively charged hemicyanine chromophore with a long alkyl chain and a tetrakis(pyrazolonato) lanthanide(III) anion. Because of the absence of an alpha-hydrogen atom in the pyrazolonato ligands, and because of the saturation of the coordination sphere by four bidentate ligands, the luminescence properties are enhanced when compared to, e.g. quinolinate complexes. (C) 2007 Elsevier Ltd. All rights reserved.",

author = "{Van Deun}, R. and Peter Nockemann and T.N. Parac-Vogt and {Van Hecke}, K. and {Van Meervelt}, L. and C. Gorller-Walrand and K. Binnemans",

year = "2007",

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day = "20",

doi = "10.1016/j.poly.2007.08.005",

language = "English",

volume = "26",

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T1 - Near-infrared photoluminescence of lanthanide complexes containing the hemicyanine chromophore

AU - Van Deun, R.

AU - Nockemann, Peter

AU - Parac-Vogt, T.N.

AU - Van Hecke, K.

AU - Van Meervelt, L.

AU - Gorller-Walrand, C.

AU - Binnemans, K.

PY - 2007/11/20

Y1 - 2007/11/20

N2 - The near-infrared luminescence properties of three (E)-N-hexadecyl-N',N'-dimethylamino-stilbazolium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato) lanthanide(III) complexes are described. These three complexes, containing trivalent neodymium, erbium and ytterbium, respectively, show near-infrared luminescence in acetonitrile solution upon UV irradiation. Luminescence decay times have been measured. The complexes consist of a positively charged hemicyanine chromophore with a long alkyl chain and a tetrakis(pyrazolonato) lanthanide(III) anion. Because of the absence of an alpha-hydrogen atom in the pyrazolonato ligands, and because of the saturation of the coordination sphere by four bidentate ligands, the luminescence properties are enhanced when compared to, e.g. quinolinate complexes. (C) 2007 Elsevier Ltd. All rights reserved.

AB - The near-infrared luminescence properties of three (E)-N-hexadecyl-N',N'-dimethylamino-stilbazolium tetrakis(1-phenyl-3-methyl-4-benzoyl-5-pyrazolonato) lanthanide(III) complexes are described. These three complexes, containing trivalent neodymium, erbium and ytterbium, respectively, show near-infrared luminescence in acetonitrile solution upon UV irradiation. Luminescence decay times have been measured. The complexes consist of a positively charged hemicyanine chromophore with a long alkyl chain and a tetrakis(pyrazolonato) lanthanide(III) anion. Because of the absence of an alpha-hydrogen atom in the pyrazolonato ligands, and because of the saturation of the coordination sphere by four bidentate ligands, the luminescence properties are enhanced when compared to, e.g. quinolinate complexes. (C) 2007 Elsevier Ltd. All rights reserved.

UR - http://www.scopus.com/inward/record.url?scp=35548992460&partnerID=8YFLogxK

U2 - 10.1016/j.poly.2007.08.005

DO - 10.1016/j.poly.2007.08.005

M3 - Article

VL - 26

SP - 5441

EP - 5447

JO - Polyhedron

JF - Polyhedron

SN - 0277-5387

IS - 18

ER -

Near-infrared photoluminescence of lanthanide complexes containing the hemicyanine chromophore

Abstract

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