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Title: Highly Luminescent Salts Containing Well-Shielded Lanthanide-Centered Complex Anions and Bulky Imidazolium Countercations

Abstract

Four salts containing imidazolium cations and europium(III)- or terbium(III)-centered complex anions have been successfully synthesized from an ethanol/H2O solution. The single-crystal X-ray diffraction analyses reveal that these compounds have a common formula of [R][Ln(DETCAP)4] [R = 1-ethyl-3-methylimidazolium (C2mim), Ln = Eu (1) and Tb (2); R = 1-butyl-3-methylimidazolium (C4mim), Ln = Eu (3) and Tb (4); DETCAP = diethyl-2,2,2-trichloroacetylphosphoramidate], in which the lanthanide centers are chelated by four chelating pseudo-β-diketonate ligands (DETCAP)-, forming the respective complex anions. Their thermal behaviors and stabilities were also investigated to study the role of the length of the side chain in the cations. Fluorescence measurements at both room temperature and liquid-nitrogen temperature show that these materials show intense characteristic europium(III) or terbium(III) emissions and have long decay times. Their overall quantum yields were determined to be in the range of 30–49%.

Authors:
 [1];  [2];  [3];  [3];  [4]
  1. Chinese Academy of Science
  2. Ruhr-Universitat Bochum
  3. Ruhr Universitat Bochum
  4. Ames Laboratory
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1166699
Report Number(s):
IS-J 8447
Journal ID: ISSN 0020-1669
DOE Contract Number:
DE-AC02-07CH11358
Resource Type:
Journal Article
Resource Relation:
Journal Name: Inorganic Chemistry; Journal Volume: 53; Journal Issue: 17
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Inorganic Chemicals and Reactions

Citation Formats

Tang, Si-Fu, Lorbeer, Chantal, Wang, Xinjiao, Ghosh, Pushpal, and Mudring, Anja-Verena. Highly Luminescent Salts Containing Well-Shielded Lanthanide-Centered Complex Anions and Bulky Imidazolium Countercations. United States: N. p., 2014. Web. doi:10.1021/ic500979p.
Tang, Si-Fu, Lorbeer, Chantal, Wang, Xinjiao, Ghosh, Pushpal, & Mudring, Anja-Verena. Highly Luminescent Salts Containing Well-Shielded Lanthanide-Centered Complex Anions and Bulky Imidazolium Countercations. United States. doi:10.1021/ic500979p.
Tang, Si-Fu, Lorbeer, Chantal, Wang, Xinjiao, Ghosh, Pushpal, and Mudring, Anja-Verena. 2014. "Highly Luminescent Salts Containing Well-Shielded Lanthanide-Centered Complex Anions and Bulky Imidazolium Countercations". United States. doi:10.1021/ic500979p.
@article{osti_1166699,
title = {Highly Luminescent Salts Containing Well-Shielded Lanthanide-Centered Complex Anions and Bulky Imidazolium Countercations},
author = {Tang, Si-Fu and Lorbeer, Chantal and Wang, Xinjiao and Ghosh, Pushpal and Mudring, Anja-Verena},
abstractNote = {Four salts containing imidazolium cations and europium(III)- or terbium(III)-centered complex anions have been successfully synthesized from an ethanol/H2O solution. The single-crystal X-ray diffraction analyses reveal that these compounds have a common formula of [R][Ln(DETCAP)4] [R = 1-ethyl-3-methylimidazolium (C2mim), Ln = Eu (1) and Tb (2); R = 1-butyl-3-methylimidazolium (C4mim), Ln = Eu (3) and Tb (4); DETCAP = diethyl-2,2,2-trichloroacetylphosphoramidate], in which the lanthanide centers are chelated by four chelating pseudo-β-diketonate ligands (DETCAP)-, forming the respective complex anions. Their thermal behaviors and stabilities were also investigated to study the role of the length of the side chain in the cations. Fluorescence measurements at both room temperature and liquid-nitrogen temperature show that these materials show intense characteristic europium(III) or terbium(III) emissions and have long decay times. Their overall quantum yields were determined to be in the range of 30–49%.},
doi = {10.1021/ic500979p},
journal = {Inorganic Chemistry},
number = 17,
volume = 53,
place = {United States},
year = 2014,
month = 9
}
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