New quinoline α-diimine ligands as fluorescent probes for metal ions: Ultrasound-assisted and conventional synthetic methods

Bruno Pedras; Vitor Rosa; Richard Welter; Carlos Lodeiro; Teresa Avilés

doi:10.1016/j.ica.2011.08.063

New quinoline α-diimine ligands as fluorescent probes for metal ions: Ultrasound-assisted and conventional synthetic methods

Bruno Pedras, Vitor Rosa, Richard Welter, Carlos Lodeiro, Teresa Avilés

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

7 Citations (Scopus)

Abstract

Three new emissive 8-aminoquinoline derived probes (1)-(3) and one dinuclear Zn(II) complex (4) were synthesized and fully characterized. Their absorption spectra show maxima at 310-336 nm, and fluorescence emission between 456 and 498 nm. Compound (1) was characterized by single crystal X-ray diffraction. The effect upon Zn(II) and Cu(II) coordination to compounds (1)-(3) was studied by monitoring the changes in absorption and fluorescence spectra, and complemented by calculation of metal-ligand stability constants. The results indicate that compound (3) is the one that presents the most favorable geometry for coordinating two metal cations, fact that is confirmed by the synthesis of the dinuclear complex (4), with similar molecular geometry.

Original language	English
Pages (from-to)	143-149
Number of pages	7
Journal	Inorganica Chimica Acta
Volume	381
Issue number	1
DOIs	https://doi.org/10.1016/j.ica.2011.08.063
Publication status	Published - 15 Feb 2012

Keywords

α-Diimine
Chemosensors
Cu(II)
Quinoline
Zn(II)

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10.1016/j.ica.2011.08.063Licence: CC BY-NC-ND

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title = "New quinoline α-diimine ligands as fluorescent probes for metal ions: Ultrasound-assisted and conventional synthetic methods",

abstract = "Three new emissive 8-aminoquinoline derived probes (1)-(3) and one dinuclear Zn(II) complex (4) were synthesized and fully characterized. Their absorption spectra show maxima at 310-336 nm, and fluorescence emission between 456 and 498 nm. Compound (1) was characterized by single crystal X-ray diffraction. The effect upon Zn(II) and Cu(II) coordination to compounds (1)-(3) was studied by monitoring the changes in absorption and fluorescence spectra, and complemented by calculation of metal-ligand stability constants. The results indicate that compound (3) is the one that presents the most favorable geometry for coordinating two metal cations, fact that is confirmed by the synthesis of the dinuclear complex (4), with similar molecular geometry.",

keywords = "α-Diimine, Chemosensors, Cu(II), Quinoline, Zn(II)",

author = "Bruno Pedras and Vitor Rosa and Richard Welter and Carlos Lodeiro and Teresa Avil{\'e}s",

note = "We thank Fundacao para a Ciencia e Tecnologia, (FCT), Portugal, for funding Project PTDC/QUI_QUI/099873/2008, Portugal/France Cooperation Program {"}Programa Pessoa 2009-2010{"}, PhD Grant SFRH/BD/27786/2006, and Post-doctoral grant SFRH/BPD/44262/2008. University of Vigo INOU-ViCou K914 and K915 (Spain) and Scientific PROTEOMASS Association (Ourense-Spain) for financial support, C. L. thanks Xunta de Galicia for the Isidro Parga Pondal research programme.",

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doi = "10.1016/j.ica.2011.08.063",

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T1 - New quinoline α-diimine ligands as fluorescent probes for metal ions: Ultrasound-assisted and conventional synthetic methods

AU - Pedras, Bruno

AU - Rosa, Vitor

AU - Welter, Richard

AU - Lodeiro, Carlos

AU - Avilés, Teresa

N1 - We thank Fundacao para a Ciencia e Tecnologia, (FCT), Portugal, for funding Project PTDC/QUI_QUI/099873/2008, Portugal/France Cooperation Program "Programa Pessoa 2009-2010", PhD Grant SFRH/BD/27786/2006, and Post-doctoral grant SFRH/BPD/44262/2008. University of Vigo INOU-ViCou K914 and K915 (Spain) and Scientific PROTEOMASS Association (Ourense-Spain) for financial support, C. L. thanks Xunta de Galicia for the Isidro Parga Pondal research programme.

PY - 2012/2/15

Y1 - 2012/2/15

N2 - Three new emissive 8-aminoquinoline derived probes (1)-(3) and one dinuclear Zn(II) complex (4) were synthesized and fully characterized. Their absorption spectra show maxima at 310-336 nm, and fluorescence emission between 456 and 498 nm. Compound (1) was characterized by single crystal X-ray diffraction. The effect upon Zn(II) and Cu(II) coordination to compounds (1)-(3) was studied by monitoring the changes in absorption and fluorescence spectra, and complemented by calculation of metal-ligand stability constants. The results indicate that compound (3) is the one that presents the most favorable geometry for coordinating two metal cations, fact that is confirmed by the synthesis of the dinuclear complex (4), with similar molecular geometry.

AB - Three new emissive 8-aminoquinoline derived probes (1)-(3) and one dinuclear Zn(II) complex (4) were synthesized and fully characterized. Their absorption spectra show maxima at 310-336 nm, and fluorescence emission between 456 and 498 nm. Compound (1) was characterized by single crystal X-ray diffraction. The effect upon Zn(II) and Cu(II) coordination to compounds (1)-(3) was studied by monitoring the changes in absorption and fluorescence spectra, and complemented by calculation of metal-ligand stability constants. The results indicate that compound (3) is the one that presents the most favorable geometry for coordinating two metal cations, fact that is confirmed by the synthesis of the dinuclear complex (4), with similar molecular geometry.

KW - α-Diimine

KW - Chemosensors

KW - Cu(II)

KW - Quinoline

KW - Zn(II)

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JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 1

ER -

New quinoline α-diimine ligands as fluorescent probes for metal ions: Ultrasound-assisted and conventional synthetic methods

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