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Author  |
NEXT Collaboration (Miller, R.L. et al); Ayet, S.; Cortes-Parra, C.; Kellerer, F.; Lopez-March, N.; Martin-Albo, J.; Martinez-Vara, M.; Novella, P.; Querol, M.; Renner, J.; Romo-Luque, C.; Saharia, P.; Simon, A.; Sorel, M.; Soto-Oton, J.; Teruel-Pardo, S.; Villamil, J.D. |
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Title |
Barium ion sensing with IPG K+ molecular probes |
Type |
Journal Article |
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Year |
2025 |
Publication |
Analyst |
Abbreviated Journal |
Analyst |
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Pages |
10pp |
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Abstract |
Fluorophores covalently bound to azacrown ether ionophores can be assembled into sensitive turn-on chemosensors. The size specificity and electron-rich nature of the ionophore's binding domain contribute to both selectivity and strong turn-on fluorescence sensing by various mechanisms when properly constructed. Aza-18-crown-6 ethers are quite selective for binding to K+ and Ba2+, yet the more electron-withdrawing dicationic nature of barium imposes a larger electronic effect on turn-on fluorescent sensors. Barium chemosensors can be important for measuring soluble Ba2+ in drinking water and have gained recent attention for their potential to enhance the detection of rare events in xenon decay. Here we quantify the capability of three chemosensors, marketed for biologically useful K+ sensing, as effective probes for Ba2+ ions. We present measurements from bulk spectrofluorometry to characterize the system in aqueous solutions and demonstrate the usefulness of these species for low-background single-ion fluorescence microscopy, revealing new candidates for Ba2+ sensing. |
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Address |
[Miller, R. L.; Cameron, C. G.; Carlson, A. J.; Madigan, R.; Medina, J.; Melancon, S.; Foss, F. W.; Vanga, M.] Univ Texas Arlington, Dept Chem & Biochem, Arlington, TX 76019 USA, Email: ffoss@uta.edu; |
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Publisher |
Royal Soc Chemistry |
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Language |
English |
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Edition |
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ISSN |
0003-2654 |
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Notes |
WOS:001619844500001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6950 |
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