A highly selective colorimetric and ratiometric two-photon fluorescent probe for fluoride ion detection |
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Authors: | Zhang Jun Feng Lim Chang Su Bhuniya Sankarprasad Cho Bong Rae Kim Jong Seung |
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Institution: | Department of Chemistry, Korea University, Seoul, Korea. |
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Abstract: | A naphthalimide-based highly selective colorimetric and ratiometric fluorescent probe for the fluoride ion displayed both one- and two-photon ratiometric changes. Upon reaction with the F(-) (TBA(+) and Na(+) salts) anion in CH(3)CN as well as in aqueous buffer solution, probe 1 shows dramatic color changes from colorless to jade-green and remarkable ratiometric fluorescence enhancements signals. These properties are mechanistically ascribed to a fluoride-triggered Si-O bond cleavage that resulted in a green fluorescent 4-amino-1,8-naphthalimide. |
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