Cobalt(II) ions probe 1 (Compound L) is a fluorescent sensor for Co 2+ detecting in biological environments. Cobalt(II) ions probe 1 can selectively bind with Co 2+ in the presence of other metal ions (Ex: 380 nm) [1].
In Vitro, Cobalt(II) ions probe 1 nearly emits no fluorescence in solution (“off” state). Upon the addition of Co2+, the coordination between Co2+ and Cobalt(II) ions probe 1 restrains the PET and ICT processes, directly leading to a strong local-state emission presenting at blue band (“on” state)[1].
References:
[1]. Liu YL, et al. A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide. Molecules. 2019 Aug 26;24(17):3093.
In Vitro, Cobalt(II) ions probe 1 nearly emits no fluorescence in solution (“off” state). Upon the addition of Co2+, the coordination between Co2+ and Cobalt(II) ions probe 1 restrains the PET and ICT processes, directly leading to a strong local-state emission presenting at blue band (“on” state)[1].
References:
[1]. Liu YL, et al. A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide. Molecules. 2019 Aug 26;24(17):3093.