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a) PL change of PF‐DNAP CPNs/PG before and after hybridization between complementary target ssDNAC and non‐complementary ssDNANC in HEPES containing 10 vol% serum. [ssDNAC] = [ssDNANC] = 8 × 10−9 m. b) PL spectra of PF‐DNAP CPNs/PG in the presence of ssDNAC with [ssDNAC] ranging from 0 to 15 nm in HEPES containing 10 vol% serum. Insets: fluorescence photographs of PF‐DNAP CPNs/PG with and without ssDNAC. λex = 390 nm.
