Reversible Luminescent Gels Containing Metal Complexes

Citations Over TimeTop 10% of 2007 papers

Abstract

Abstract Gelators are compounds capable of solidifying various solvents and water. Organic gels, and in particular hydrogels, are interesting soft materials with many potential applications. In this paper the formation of luminescent gels in water and dimethylformamide as solvents is reported. The gels are prepared by using a carboxylate‐based aliphatic gelator ( 1 ) and a N , N ′‐bis( O ‐methyl‐TyrOH) oxalamide derivative ( 2 ). The gels are transparent, and form fiberlike structures in the presence of the red luminescent moiety, a Eu III hemicaged complex. The spectroscopic behavior of the complex is investigated in different solvents and when is entrapped in the gel. In order to probe the involvement of the chemical structure of the luminescent moiety in the gel network, a ruthenium complex, Ru(bpy) 2 (dppz) 2+ (where bpy = 2,2′‐bipyridine and dppz = dipyrido[3,2‐ a :2′,3′‐ c ]phenazine) has also been employed. The complex is in fact nonluminescent in water, while emitting when incorporated in the gel. Such “switching on” behavior is attributed to the incorporation of the complex into the lipophilic environment of gel fibers, where it is shielded from quenching by water molecules.

Related Papers

• → Comparative studies of pyridine and bipyridine ruthenium dye complexes with different side groups as sensitizers in sol-gel quasi-solid-state dye sensitized solar cells(2015)19 cited
• → Synthesis of ruthenium tris(2,2′-bipyridine)-type complexes tethered to peptides at 5,5′-positions(2012)7 cited
• → Phosphorogenic and spontaneous formation of tris(bipyridine)ruthenium in peptide scaffolds(2019)1 cited
• Solid electrolyte bipyridine macroligands for ruthenium polypyridyl complexes : new materials for applications in dye-sensitized solar cells(2004)
• New potential materials for polymer solar cells : polymeric ruthenium bipyridine complexes(2004)