Europium complexes of a novel ethylenedioxythiophene-derivatized bis(pyrazolyl)pyridine ligand exhibiting efficient lanthanide sensitization

Julie M. Stanley; Xunjin ZHU; Xiaoping Yang; Bradley J. Holliday

doi:10.1021/ic902481y

Europium complexes of a novel ethylenedioxythiophene-derivatized bis(pyrazolyl)pyridine ligand exhibiting efficient lanthanide sensitization

Julie M. Stanley, Xunjin ZHU, Xiaoping Yang, Bradley J. Holliday

Department of Chemistry

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

61 Citations (Scopus)

Abstract

A new class of highly luminescent nine-coordinated europium(III) tris(β-diketonate) bis[(ethylenedioxythiophene)pyrazolyl]pyridine (L) complexes has been synthesized and the photophysical properties studied: 1 =Eu(hfac)₃(L); 2=Eu(tta)₃(L); 3=Eu(btfac)₃(L). The solid-state structure of complex 1 has been determined by single-crystal X-ray crystallography and shows the geometry of the local coordination environment around the Eu^III ion to be a slightly distorted tricapped trigonal prism. Luminescence lifetimes were found to be 581, 473, and 576 μs for complexes 1-3, respectively. Absolute quantum yields for complexes 1-3 were measured as 16.4 ± 1.4%, 27.5 ± 1.2%, and 22.2% ± 0.3%, respectively.

Original language	English
Pages (from-to)	2035-2037
Number of pages	3
Journal	Inorganic Chemistry
Volume	49
Issue number	5
DOIs	https://doi.org/10.1021/ic902481y
Publication status	Published - 1 Mar 2010

Scopus Subject Areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{8aa2e32a1a4741468cf3c596afec353a,

title = "Europium complexes of a novel ethylenedioxythiophene-derivatized bis(pyrazolyl)pyridine ligand exhibiting efficient lanthanide sensitization",

abstract = "A new class of highly luminescent nine-coordinated europium(III) tris(β-diketonate) bis[(ethylenedioxythiophene)pyrazolyl]pyridine (L) complexes has been synthesized and the photophysical properties studied: 1 =Eu(hfac)3(L); 2=Eu(tta)3(L); 3=Eu(btfac)3(L). The solid-state structure of complex 1 has been determined by single-crystal X-ray crystallography and shows the geometry of the local coordination environment around the EuIII ion to be a slightly distorted tricapped trigonal prism. Luminescence lifetimes were found to be 581, 473, and 576 μs for complexes 1-3, respectively. Absolute quantum yields for complexes 1-3 were measured as 16.4 ± 1.4%, 27.5 ± 1.2%, and 22.2% ± 0.3%, respectively.",

author = "Stanley, {Julie M.} and Xunjin ZHU and Xiaoping Yang and Holliday, {Bradley J.}",

note = "We gratefully acknowledge the Robert A. Welch Foundation (Grant F-1631), the Petroleum Research Fund administered by the American Chemical Society (47022-G3), the National Science Foundation (Grants CHE-0639239, CHE-0741973, and CHE-0847763), the American Heart Association (Grant 0765078Y), the Center for Nano & Molecular Science & Technology at The University of Texas at Austin for financial support of this research.",

year = "2010",

month = mar,

day = "1",

doi = "10.1021/ic902481y",

language = "English",

volume = "49",

pages = "2035--2037",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "5",

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T1 - Europium complexes of a novel ethylenedioxythiophene-derivatized bis(pyrazolyl)pyridine ligand exhibiting efficient lanthanide sensitization

AU - Stanley, Julie M.

AU - ZHU, Xunjin

AU - Yang, Xiaoping

AU - Holliday, Bradley J.

N1 - We gratefully acknowledge the Robert A. Welch Foundation (Grant F-1631), the Petroleum Research Fund administered by the American Chemical Society (47022-G3), the National Science Foundation (Grants CHE-0639239, CHE-0741973, and CHE-0847763), the American Heart Association (Grant 0765078Y), the Center for Nano & Molecular Science & Technology at The University of Texas at Austin for financial support of this research.

PY - 2010/3/1

Y1 - 2010/3/1

N2 - A new class of highly luminescent nine-coordinated europium(III) tris(β-diketonate) bis[(ethylenedioxythiophene)pyrazolyl]pyridine (L) complexes has been synthesized and the photophysical properties studied: 1 =Eu(hfac)3(L); 2=Eu(tta)3(L); 3=Eu(btfac)3(L). The solid-state structure of complex 1 has been determined by single-crystal X-ray crystallography and shows the geometry of the local coordination environment around the EuIII ion to be a slightly distorted tricapped trigonal prism. Luminescence lifetimes were found to be 581, 473, and 576 μs for complexes 1-3, respectively. Absolute quantum yields for complexes 1-3 were measured as 16.4 ± 1.4%, 27.5 ± 1.2%, and 22.2% ± 0.3%, respectively.

AB - A new class of highly luminescent nine-coordinated europium(III) tris(β-diketonate) bis[(ethylenedioxythiophene)pyrazolyl]pyridine (L) complexes has been synthesized and the photophysical properties studied: 1 =Eu(hfac)3(L); 2=Eu(tta)3(L); 3=Eu(btfac)3(L). The solid-state structure of complex 1 has been determined by single-crystal X-ray crystallography and shows the geometry of the local coordination environment around the EuIII ion to be a slightly distorted tricapped trigonal prism. Luminescence lifetimes were found to be 581, 473, and 576 μs for complexes 1-3, respectively. Absolute quantum yields for complexes 1-3 were measured as 16.4 ± 1.4%, 27.5 ± 1.2%, and 22.2% ± 0.3%, respectively.

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U2 - 10.1021/ic902481y

DO - 10.1021/ic902481y

M3 - Journal article

C2 - 20112958

AN - SCOPUS:77649163871

SN - 0020-1669

VL - 49

SP - 2035

EP - 2037

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 5

ER -

Europium complexes of a novel ethylenedioxythiophene-derivatized bis(pyrazolyl)pyridine ligand exhibiting efficient lanthanide sensitization

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