- Modulation of circularly polarized luminescence by swelling of microgels functionalized with enantiopure [Ru(bpy)3]2+ luminophores
Yoshida, K.; Kajiwara, M.; Okazaki, Y.; Lapeyre, V.; Zinna, F.; Sojic, N.; Bouffier, L.; Lacour, J.; Ravaine, V.; Oda, R.
Chem. Commun. 2024, 60, 1743-1746
Chemoresponsive microgels functionalised with enantiomeric Δ- or Λ- [Ru(bpy)3]2+ showed tunable chiroptical properties upon swelling and shrinking. The tuning of the absolute values and the ratio between the excitation and emission dissymmetry factors, glum and gabs, is triggered by a modulation of the local mobility of [Ru(bpy)3]2+. This is done via addition of fructose, which controlled interactions and distances between [Ru(bpy)3]2+ and its enhancer, phenylboronic acid. Highest g values are observed for collapsed microgels in which phenylboronic acid and [Ru(bpy)3]2+ complexes have the strongest interactions.
DOI : 10.1039/D3CC04391F
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