Delayed lanthanide luminescence sensing of aromatic carboxylates using heptadentate triamide Tb(iii) cyclen complexes: the recognition of salicylic acid in waterElectronic supplementary information (ESI) available: experimental section, Fig. S1, Table S1. See http://www.rsc.org/suppdata/cc/b2/b204888d/

Abstract

The coordinately unsaturated terbium complexes Tb.1 and Tb.2 possess two labile metal-bound water molecules that can be displaced upon metal chelation to aromatic carboxylic anions such as salicylic acid in water, which gives rise to large enhancements in the Tb(III) luminescence.

Synthesis and Characterization of Ligands and their Gadolinium(III) Complexes

“…More structures have been published for lanthanide(III) complexes of H 3 DO3A amide derivatives. In some cases, the expected two coordinated water molecules have been found [438][439][440][441]. In addition, a series of ternary Ln(III) complexes with small bidentate ligands such as acetate [442], hydroxyacetate [443], amino acids [441,442], or citric acid [442] have been reported.…”

Fluorescent Detection Principles and Strategies

“…12.22. Energy transfer has also been employed in sensors based on transition-metal ion complexes and lanthanide ion complexes, where the emission arises from the metal center itself, as in the case of lanthanide complexes such as in the Eu(III) and Tb(III), 29 [56] and 30 [57], Fig. 12.25.…”

Covalent Interactions in Chemosensor Design

“…One area of application of covalent interactions involving metals is organic anion detection because a large number of biomolecules such as peptides, nucleotides, phospholipids, and carbohydrates are anionic compounds [162,163]. There have been some impressive chemosensors [162][163][164][165][166][167][168][169][170][171][172][173]. One interesting strategy is the design of sensors based on dimetallic architectures that utilize a bridging mechanism.…”

“…3.7 using similar strategies. For example, lanthanide complexes 47 and 48 were developed by the Gunnlaugsson group for the recognition of anions in aqueous solution[164,165]. The attractive features of such lanthanide metal ion complexes include the long-lived excited states (in the 47a Ln = Tb(III), R 1 = H, R 2 = CH 3 48a Ln = Tb(III), R 1 = R 2 = CH 3 47b Ln = Eu(III), R1 = H, R 2 = CH 3 48b Ln = Eu(III), R 1 = R 2 = CH 3 48c Ln = Sm(III), R 1 = R 2 =CH 3…”