Activation of a Photodissociative Ruthenium Complex by Triplet-Triplet Annihilation Upconversion in Liposomes
作者:Sven H. C. Askes、Azadeh Bahreman、Sylvestre Bonnet
DOI:10.1002/anie.201309389
日期:2014.1.20
Liposomes capable of generating photons of blue light in situ by triplet–tripletannihilationupconversion of either green or red light, were prepared. The red‐to‐blue upconverting liposomes were capable of triggering the photodissociation of ruthenium polypyridyl complexes from PEGylated liposomes using a clinical grade photodynamic therapy laser source (630 nm).
Photosensitive compounds for use in a method of treating a disease or condition are described. The photosensitive compounds have the formula R—Y, wherein R is a ruthenium complex and Y is at least one sulphur-containing photoreleasable group, and the compounds comprise at least one ruthenium-sulphur bond; or a pharmaceutically acceptable salt, solvate, ester or amide, such that upon influence of visible or near infra-red light (400-1400 nm) in vivo, said at least one ruthenium-sulphur bond is broken, thereby generating a pharmacologically active compound.
Chemical Swarming: Depending on Concentration, an Amphiphilic Ruthenium Polypyridyl Complex Induces Cell Death via Two Different Mechanisms
作者:Bianka Siewert、Vincent H. S. van Rixel、Eva J. van Rooden、Samantha L. Hopkins、Miriam J. B. Moester、Freek Ariese、Maxime A. Siegler、Sylvestre Bonnet
DOI:10.1002/chem.201600927
日期:2016.7.25
the amphiphilic rutheniumcomplex [3](PF6)2 are reported. Complex [3](PF6)2 contains a Ru−S bond that is stable in the dark in cell‐growing medium, but is photosensitive. Upon blue‐light irradiation, complex [3](PF6)2 releases the cholesterol–thioether ligand 2 and an aqua rutheniumcomplex [1](PF6)2. Although ligand 2 and complex [1](PF6)2 are by themselves not cytotoxic, complex [3](PF6)2 was unexpectedly