Synthesis, characterization, photophysical properties of lanthanide complexes with flexible tripodal carboxylate ligands

Chi Fai Chan; Hongguang Li; Chunyu Seto; Hoi Lam TAM; Ga Lai Law; Ka-Leung WONG

doi:10.1016/j.poly.2012.07.020

Synthesis, characterization, photophysical properties of lanthanide complexes with flexible tripodal carboxylate ligands

Chi Fai Chan, Hongguang Li, Chunyu Seto, Hoi Lam TAM, Ga Lai Law^*, Ka-Leung WONG

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

4 Citations (Scopus)

Abstract

Three series of lanthanide complexes [LnL₁, LnL₂ and LnL₃ Ln = Eu, Gd and Tb] have been synthesized with tripodal amide ligands. These ligands have similar benzoate antenna with different substituent groups at para-position (L₁ = -OME, L₂ = -H; L₃ = -CF₃). The antenna effect is known to play a prominent role in the luminescence of the lanthanide ions emitting in the coordination complexes. The effect of the ligands triplet and antenna effect have been studied here. The room and low temperature photophysical properties of the nine complexes have been monitored in solution with excitation at 330 nm. The emission antenna effect (quantum yield and emission intensity) varied with the triplet state of ligand that comes from the substituent on the benzoate antenna.

Original language	English
Pages (from-to)	939-944
Number of pages	6
Journal	Polyhedron
Volume	52
DOIs	https://doi.org/10.1016/j.poly.2012.07.020
Publication status	Published - 22 Mar 2013

Scopus Subject Areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

User-Defined Keywords

Europium
Lanthanide
Luminescence
Terbium

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10.1016/j.poly.2012.07.020

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@article{345e1d56f4c74cf1934c6e090b535dbf,

title = "Synthesis, characterization, photophysical properties of lanthanide complexes with flexible tripodal carboxylate ligands",

abstract = "Three series of lanthanide complexes [LnL1, LnL2 and LnL3 Ln = Eu, Gd and Tb] have been synthesized with tripodal amide ligands. These ligands have similar benzoate antenna with different substituent groups at para-position (L1 = -OME, L2 = -H; L3 = -CF3). The antenna effect is known to play a prominent role in the luminescence of the lanthanide ions emitting in the coordination complexes. The effect of the ligands triplet and antenna effect have been studied here. The room and low temperature photophysical properties of the nine complexes have been monitored in solution with excitation at 330 nm. The emission antenna effect (quantum yield and emission intensity) varied with the triplet state of ligand that comes from the substituent on the benzoate antenna.",

keywords = "Europium, Lanthanide, Luminescence, Terbium",

author = "Chan, {Chi Fai} and Hongguang Li and Chunyu Seto and TAM, {Hoi Lam} and Law, {Ga Lai} and Ka-Leung WONG",

note = "Funding Information: The work described in this paper was partially supported by grants from the Hong Kong Baptist University ( FRG1/11-12/034 ). ",

year = "2013",

month = mar,

day = "22",

doi = "10.1016/j.poly.2012.07.020",

language = "English",

volume = "52",

pages = "939--944",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Synthesis, characterization, photophysical properties of lanthanide complexes with flexible tripodal carboxylate ligands

AU - Chan, Chi Fai

AU - Li, Hongguang

AU - Seto, Chunyu

AU - TAM, Hoi Lam

AU - Law, Ga Lai

AU - WONG, Ka-Leung

N1 - Funding Information: The work described in this paper was partially supported by grants from the Hong Kong Baptist University ( FRG1/11-12/034 ).

PY - 2013/3/22

Y1 - 2013/3/22

N2 - Three series of lanthanide complexes [LnL1, LnL2 and LnL3 Ln = Eu, Gd and Tb] have been synthesized with tripodal amide ligands. These ligands have similar benzoate antenna with different substituent groups at para-position (L1 = -OME, L2 = -H; L3 = -CF3). The antenna effect is known to play a prominent role in the luminescence of the lanthanide ions emitting in the coordination complexes. The effect of the ligands triplet and antenna effect have been studied here. The room and low temperature photophysical properties of the nine complexes have been monitored in solution with excitation at 330 nm. The emission antenna effect (quantum yield and emission intensity) varied with the triplet state of ligand that comes from the substituent on the benzoate antenna.

AB - Three series of lanthanide complexes [LnL1, LnL2 and LnL3 Ln = Eu, Gd and Tb] have been synthesized with tripodal amide ligands. These ligands have similar benzoate antenna with different substituent groups at para-position (L1 = -OME, L2 = -H; L3 = -CF3). The antenna effect is known to play a prominent role in the luminescence of the lanthanide ions emitting in the coordination complexes. The effect of the ligands triplet and antenna effect have been studied here. The room and low temperature photophysical properties of the nine complexes have been monitored in solution with excitation at 330 nm. The emission antenna effect (quantum yield and emission intensity) varied with the triplet state of ligand that comes from the substituent on the benzoate antenna.

KW - Europium

KW - Lanthanide

KW - Luminescence

KW - Terbium

UR - http://www.scopus.com/inward/record.url?scp=84875434720&partnerID=8YFLogxK

U2 - 10.1016/j.poly.2012.07.020

DO - 10.1016/j.poly.2012.07.020

M3 - Journal article

AN - SCOPUS:84875434720

SN - 0277-5387

VL - 52

SP - 939

EP - 944

JO - Polyhedron

JF - Polyhedron

ER -

Synthesis, characterization, photophysical properties of lanthanide complexes with flexible tripodal carboxylate ligands

Abstract

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