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In this article, we report the first graphene oxide (GO)-based platform to detect protease activity in a homogeneous real-time format. In designing such GO-based biosensing platform, we put a protease substrate peptide as the linker between the energy transfer donor (QDs) and the energy transfer acceptor (GO) to fabricate the GO-peptide-QDs nanoprobes. In the nanoprobes, the photoluminescence (PL)...
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