The recognition of anions using delayed lanthanide luminescence: The use of Tb(iii) based urea functionalised cyclen complexes
作者:Cidália Maria Gomes dos Santos、Thorfinnur Gunnlaugsson
DOI:10.1039/b902955a
日期:——
A cyclen based lanthanide luminescent sensor, Tb.1, has been developed by taking advantage of a combination of hydrogen bonding and f-metal ion coordination binding sites for anionic species. Analysis of the ground state, the emission from the singlet and the Tb(III) excited states clearly show the ability of the Tb(III) complex to signal the presence of anions in CH3CN, through multiple binding interactions consisting of hydrogen bonding and metal coordination. The delayed lanthanide luminescence from the Tb(III) diaryl–urea complex was found to be significantly enhanced only upon recognition of H2PO4−, at the same time as displaying good selectivity over other competitive anions, such as CH3COO−.
Glycosylated lanthanide cyclen complexes as luminescent probes for monitoring glycosidase enzyme activity
作者:Helen M. Burke、Thorfinnur Gunnlaugsson、Eoin M. Scanlan
DOI:10.1039/c6ob01712f
日期:——
Glycosylated lanthanide cyclen complexes have been prepared and investigated as luminescent probes for glycosidase enzyme activity and lectin binding.
已经制备并研究了糖基化镧系环氮化合物,作为糖苷酶酶活性和凝集素结合的发光探针。
pH Responsive Eu(III)−Phenanthroline Supramolecular Conjugate: Novel “<i>Off</i><i>−</i><i>On</i><i>−</i><i>Off</i>” Luminescent Signaling in the Physiological pH Range
作者:Thorfinnur Gunnlaugsson、Joseph P. Leonard、Katell Sénéchal、Andrew J. Harte
DOI:10.1021/ja035425a
日期:2003.10.1
The formation of luminescentsupramolecular ternary complexes in water: delayed luminescence sensing of aromatic carboxylates using coordinated unsaturated cationic heptadenatate lanthanide ion complexes.
Eu(<scp>iii</scp>)–cyclen–phen conjugate as a luminescent copper sensor: the formation of mixed polymetallic macrocyclic complexes in water
作者:Thorfinnur Gunnlaugsson、Joseph P. Leonard、Katell Sénéchal、Andrew J. Harte
DOI:10.1039/b316176e
日期:——
The cationic cyclen based Eu(III)âphen conjugated 1·Eu was synthesised as a chemosensor for Cu(II), where the recognition in water at pH 7.4 gave rise to quenching of the Eu(III) luminescence and the formation of tetranuclear polymetallic Cu(II)âEu(III) macrocyclic complexes in solution where Cu(II) was bound by three 1·Eu conjugates.
The effect on the lanthanide luminescence of structurally simple Eu(iii) cyclen complexes upon deprotonation of metal bound water molecules and amide based pendant arms
作者:Sally E. Plush、Naomi A. Clear、Joseph P. Leonard、Ann-Marie Fanning、Thorfinnur Gunnlaugsson
DOI:10.1039/b923383k
日期:——
and their complexes with europium(III) were synthesised. The protonation constants and the metal ion stability constants of two of these ligands were determined by potentiometric titration. The pKa of the water molecules coordinated to the complexed metal ion were determined by both luminescent and potentiometric measurements. The luminescence pH dependence of a further three Eu(III) complexes, 5–7, which
一系列替代 1,4,7,10-四氮杂十二烷配体1-4,具有敏化作用硝基苯 或者 萘 触角,作为酰胺侧基臂之一,及其与 ((III)被合成了。通过电位滴定法测定其中两个配体的质子化常数和金属离子稳定性常数。与配位的金属离子配位的水分子的p K a通过发光和电位测量来确定。另外三个发光的pH值依赖性((III)还研究了没有任何触角的5-7配合物,目的是更好地了解金属结合物的作用水这种分子在直接激发镧系元素离子时具有这种复合物的发光特性。这些发光测量的结果表明,所有配合物的Eu(III)发射均被作为pH的函数进行了调节,我们将其归因于循环系统中离子的配位环境中发生的由金属去质子化引起的变化。边界水 分子和/或酰胺侧臂的去质子化。