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A signal-amplification and dual-recognition strategy was designed to construct a signal-enhanced surface plasmon resonance (SPR) platform for the highly sensitive detection of dopamine. This strategy was based on the specific recognition of boronic acid to diol and that of calix[4]arene crown ether-modified gold nanoparticles (CAL[4]-AuNPs) to amine groups. A 3-aminophenyl boronic acid monohydrate...
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