Synthesis and luminescent properties of terbium complex with 2-amino-4-chlorobenzoic acid

Chen, Yongjie; Xing, Zhenfang; Cao, Shuang; Wang, Ying

doi:10.1016/s1002-0721(16)60020-0

Cited by 19 publications

(5 citation statements)

References 18 publications

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“…At the same time, the ν Ln‐O stretching vibration band of complexes were observed at 416, 416, 418, 419 cm −1 . All these above suggest that oxygen atoms of the carboxylate groups are coordinated to the Ln(III) ions . The bands ν C=N and δ C‐H shift to higher wave numbers in the complexes compared to the free ligand 5,5′‐DM‐2,2′‐bipy, proving that the nitrogen atoms of the 5,5′‐DM‐2,2′‐bipy were also coordinated to the Ln(III) ion …”

Section: Resultsmentioning

confidence: 90%

Four novel lanthanide complexes with 4‐ethylbenzoic acid and 5,5′‐dimethy‐2,2′‐bipyridine: Structures, luminescent, thermal properties and bacteriostatic activities

Shen

Zhu

Ren

et al. 2017

Applied Organom Chemis

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Four new lanthanide complexes [Ln(4-EBA) 3 (5,5′-DM-2,2′-bipy)] 2 ·2C 2 H 5 OH (Ln = Ho (1), Tb (2), Er (3)); [Ln(4-EBA) 3 (4-EBAH)(5,5′-DM-2,2′-bipy)] 2 (Ln = Eu(4); 4-EBA =4-ethylbenzoate; 5,5′-DM-2,2′-bipy =5,5′-dimethy-2,2′bipyridine; 4-EBAH = 4-ethylbenzoic acid) have been synthesized and characterized by elemental analysis and IR spectra. The single crystal results reveal that complexes 1-3 are isostructural. It is worth noting that the mole ratios of the carboxylate ligands and neutral ligands is 4:1 in complex 4, which is different from the former and has been rarely reported. Nevertheless, all complexes are connected to form 1D chain by π···π wake staking interactions. Additionally, the complexes 2 (Tb(III)) and 4 (Eu(III)) exhibit characteristic luminescent properties, indicating that ligands can be used as sensitizing chromophore in these systems. The thermal decomposition mechanism of the complexes has been investigated by TG/DSC-FTIR technology. Stacked plots of the FTIR spectra of the evolved gases show complexes broken down into H 2 O, CO 2 , and other gaseous molecules as well as the gaseous organic fragments. The studies on bacteriostatic activities of complexes show that four complexes have good bacteriostatic activities against Candida albicans but no bacteriostatic activity on Escherichia coli, and Staphylococcus aureus. Additionally, the complexes 1 to 3 have better bacteriostatic activities on Candida albicans than complex 4.

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Section: Resultsmentioning

confidence: 90%

Four novel lanthanide complexes with 4‐ethylbenzoic acid and 5,5′‐dimethy‐2,2′‐bipyridine: Structures, luminescent, thermal properties and bacteriostatic activities

Shen

Zhu

Ren

et al. 2017

Applied Organom Chemis

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“…After MeBIP excitation, a ligand‐to‐Tb energy transfer takes place from the 3

{π π}^{*}

excited state of MeBIP to the D 4 level of Tb 3+ . So four peaks appear at 491 nm ( 5 D 4 → 7 F 6 ), 547 nm ( 5 D 4 → 7 F 5 ), 588 nm ( 5 D 4 → 7 F 4 ) and 625 nm ( 5 D 4 → 7 F 3 ), indicative of the terbium metal centered emission . The shift of ligand emission and the appearance of Tb 3+ emission demonstrate that MeBIP ligand is binding to Tb 3+ .…”

Section: Resultsmentioning

confidence: 97%

Poly[6‐(2,6‐bis(1′‐methylbenzimidazolyl)pyridin‐4‐yloxy)hexyl acrylate] (PBIP) and its terbium (III) complex (PBIP‐Tb³⁺): Homopolymerization, optical, and magnetic performance

Liu

Sun

Ren

et al. 2016

J of Applied Polymer Sci

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Poly[6-(2,6-bis(1 0 -methylbenzimidazolyl)pyridin-4-yloxy)hexyl acrylate] (PBIP) and its terbium complex (PBIP-Tb 31 ) were prepared and characterized by 1 H NMR and FT-IR. The optical properties of PBIP-Tb 31 complex were characterized by UV-vis spectroscopy and fluorescence spectroscopy. Both polymer PBIP and PBIP-Tb 31 complex show good thermal stability. The magnetic property of PBIP-Tb 31 complex was measured as a function of temperature (5-300 K) at 30 kOe and as a function of an external field (250 to 50 kOe) at 5 K. Magnetic hysteresis loop of PBIP-Tb 31 complex at 5 K shows typical "S" shape and PBIP-Tb 31 complex is soft ferromagnetic.

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“…Furthermore, the values for ∆[∆ as (COO) -∆ s (COO)] are falling in the range of 197 cm -1 for all the complexes (1-9), indicating that indo ligand is coordinated to the RE 3+ as chelating or bridging mode. [21][22][23] These results strongly suggest that those complexes are either binuclear or coordination polymers. Moreover, the absorption bands around 1468 and 1423 cm -1 indicate that bipy and phen heteroaromatic ligands are coordinated to the metal ions through their nitrogen atoms.…”

Section: Synthesis and Characterizationmentioning

confidence: 86%

Rare Earth-Indomethacinate Complexes with Heterocyclic Ligands: Synthesis and Photoluminescence Properties

Filho¹,

Santos²,

Vale³

et al. 2017

J. Braz. Chem. Soc.

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In this work, synthesis, characterization and photophysical properties of trivalent rare earth complexes with a nonsteroidal anti-inflammatory drug [the indomethacinate (indo), presenting formulas RE(indo) 3 (H 2 O) x (x = 3, for Eu 3+ and Gd 3+ , and x = 4 for Tb 3+), RE(indo) 3 (bipy) and RE(indo) 3 (phen) (bipy: 2,2'-bipyridine, and phen: 1,10-phenanthroline)] were investigated. Based on photoluminescent results, the intramolecular energy transfer process from T 1 triplet states of indo, phen and bipy ligands to the 5 D 0 emitting level of the Eu 3+ ion in the coordination compounds is discussed. Accordingly, it is proposed two possible intramolecular energy transfer mechanisms between indomethacinate ligand and rare earth ions, which involve the participation of excited electronic states of the heterocyclic ligands as intermediate ones.

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Synthesis and luminescent properties of terbium complex with 2-amino-4-chlorobenzoic acid

Cited by 19 publications

References 18 publications

Four novel lanthanide complexes with 4‐ethylbenzoic acid and 5,5′‐dimethy‐2,2′‐bipyridine: Structures, luminescent, thermal properties and bacteriostatic activities

Four novel lanthanide complexes with 4‐ethylbenzoic acid and 5,5′‐dimethy‐2,2′‐bipyridine: Structures, luminescent, thermal properties and bacteriostatic activities

Poly[6‐(2,6‐bis(1′‐methylbenzimidazolyl)pyridin‐4‐yloxy)hexyl acrylate] (PBIP) and its terbium (III) complex (PBIP‐Tb³⁺): Homopolymerization, optical, and magnetic performance

Rare Earth-Indomethacinate Complexes with Heterocyclic Ligands: Synthesis and Photoluminescence Properties

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Synthesis and luminescent properties of terbium complex with 2-amino-4-chlorobenzoic acid

Cited by 19 publications

References 18 publications

Four novel lanthanide complexes with 4‐ethylbenzoic acid and 5,5′‐dimethy‐2,2′‐bipyridine: Structures, luminescent, thermal properties and bacteriostatic activities

Four novel lanthanide complexes with 4‐ethylbenzoic acid and 5,5′‐dimethy‐2,2′‐bipyridine: Structures, luminescent, thermal properties and bacteriostatic activities

Poly[6‐(2,6‐bis(1′‐methylbenzimidazolyl)pyridin‐4‐yloxy)hexyl acrylate] (PBIP) and its terbium (III) complex (PBIP‐Tb3+): Homopolymerization, optical, and magnetic performance

Rare Earth-Indomethacinate Complexes with Heterocyclic Ligands: Synthesis and Photoluminescence Properties

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Product

Resources

About

Poly[6‐(2,6‐bis(1′‐methylbenzimidazolyl)pyridin‐4‐yloxy)hexyl acrylate] (PBIP) and its terbium (III) complex (PBIP‐Tb³⁺): Homopolymerization, optical, and magnetic performance