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Boronic acid-linked fluorescent and colorimetric probes for copper ions
K M K Swamy1, Sung-Kyun Ko, Soo Kyung Kwon
1Division of Nano Science (BK21), Ewha Womans University, Seoul 120-750, Korea.
Abstract:
The first examples of boronic acid-linked fluorescent and colorimetric chemosensors for copper ions are reported; the monoboronic acid-conjugated rhodamine probe displays a highly selective fluorescent enhancement with Cu2+ among the various metal ions whereas the fluorescence of the bisboronic acid-conjugated fluorescein probe is selectively quenched by Cu2+, probably by way of a PET mechanism.

