Twisted Charge-Transfer Antennae for Ultra-Bright Terbium(III) and Dysprosium(III) Bioprobes.

ABSTRACT

The design of original twisted charge transfer antennae in which a non-planar geometry is enforced thanks to one or two bulky ortho-Me substituents allows us to prepare the corresponding ultra-bright TbIII and DyIII bioprobes. The brightness of the TbIII derivative compares well with that of the benchmark Tb-Lumi4 complex. The first bio-imaging experiments with a DyIII luminescent bioprobe are also reported.