Publications de Annina Aebischer

Sensitized near-IR luminescence of lanthanide complexes based on push-pull diketone derivatives

Jean-Claude Bünzli, Anne-Sophie Chauvin, Frédéric Gumy, Annina Aebischer

Lanthanide complexes with two push-pull diketone derivatives as sensitizers have been developed as synthons for near-infrared emitting materials. The ligand substituents consist of a carbazole moiety with hole-transport properties and an aromatic or hetero ...

2010

Intrinsic quantum yields and radiative lifetimes of lanthanide tris(dipicolinates)

Jean-Claude Bünzli, Frédéric Gumy, Annina Aebischer

The efficiency with which the surroundings of trivalent lanthanide ions sensitize their luminescence (Zsens) is a key parameter in the design of highly emitting molecular edifices and materials. Evaluation of Zsens requires the measurement of the overall a ...

2009

A ruthenium-based metallostar: synthesis, sensitized luminescence and 1H relaxivity

Lothar Helm, Jean-Claude Bünzli, Alain Borel, Loïck Moriggi, Annina Aebischer

Ru-based metallostars Na4{Ru[Ln2bpy-DTTA2(H2O)4]3} (Ln = Y, Gd, and Eu) have been self-assembled in aqueous solution and their relaxivity and optical properties unravelled. The ynthesis and the purification of the new, highly stable heptametallic entities ...

2009

Indo-1 derivatives for local calcium sensing

Kai Johnsson, Annina Aebischer, Cindy Fellay

The role of calcium in signal transduction relies on the precise spatial and temporal control of its concentration. The existing means to detect fluctuations in Ca2+ concentrations with adequate temporal and spatial resolution are limited. We introduce her ...

American Chemical Society2009

NIR-emitting lanthanide helicates

Jean-Claude Bünzli, Frédéric Gumy, Annina Aebischer

2008

Rational Tuning of Melting Entropies for Designing Luminescent Lanthanide-Containing Thermotropic Liquid Crystals at Room Temperature

Jean-Claude Bünzli, Frédéric Gumy, Annina Aebischer

The connection of twelve peripheral and divergent dodecyloxy chains to a central tridentate aromatic binding unit provides the dodecacatenar ligand L11, for which room- temperature mesomorphism is detected. An enthalpically unbalanced large melting entropy ...

2007

Highly Efficient Near-IR Emitting Yb/Yb and Yb/Al Helicates

Jean-Claude Bünzli, Frédéric Gumy, Annina Aebischer

2007