"I am Perrine, a first year PhD student in organic chemistry with a focus on lanthanide-based bioprobes for medical imaging. My previous work on bimodal redox-active complexes led me to this topic, where we aim to improve the solubility and stability in aqueous media of the molecules from my master project, while improving their CEST and redox response. I am particularly interested in understanding how structural modifications influence CEST properties and redox behavior."