We demonstrate the reduction of oxidized to reduced glutathione in the presence of glutathione reductase enzyme based on the modulation in photoluminescent quenching efficiency between the perylene bisimide chromophore TPPCA and gold nanoparticles (AuNPs). The TPPCA-AuNPs assembly shows a turn-on fluorescent signal in the presence of reduced glutathione, which provides a new concept to measure the balance of glutathione in a creature.
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He et al. (2007) studied this question.
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