Journal
INORGANIC CHEMISTRY
Volume 49, Issue 20, Pages 9113-9115Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic101513a
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- National Institute of General Medical Sciences [GM065519]
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A xanthene-forming condensation reaction yields rhodol and rhodamire dyes carrying a zinc-binding ligand that includes the aniline-type nitrogen donor of the fluorophores. Upon zinc coordination in neutral aqueous solution, rhodol RF3 behaves as a ratiometric sensor, and rhodamine RA1 acts as a turn-off intensity-based indicator. Both fluorescent compounds bind the divalent zinc cation wit micromolar affinity.
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