A ratiometric fluorescent sensor for UO22+ detection based on Ag+-modified gold nanoclusters hybrid via photoinduced electron transfer (PET) mechanism

Advances in Carbon Dot-Based Ratiometric Fluorescent Probes for Environmental Contaminant Detection: A Review

“…A core-shell structure is also a frequently adopted approach to protect the sensing capabilities of CDs fluorescent probes [ 80 , 81 , 82 , 83 , 84 , 85 ]. For example, Gong et al [ 80 ] reported a novel and stable ratiometric fluorescent probe (B-CDs@SiO 2 @GSH-AuNCs/Ag + ) designed for the sensitive detection of uranyl in water ( Figure 2 b).…”

“…A core-shell structure is also a frequently adopted approach to protect the sensing capabilities of CDs fluorescent probes [ 80 , 81 , 82 , 83 , 84 , 85 ]. For example, Gong et al [ 80 ] reported a novel and stable ratiometric fluorescent probe (B-CDs@SiO 2 @GSH-AuNCs/Ag + ) designed for the sensitive detection of uranyl in water ( Figure 2 b). This probe exhibited exceptional stability, with the F / F 440 ratio decreasing by merely 4.73% even after three months in a chloroacetic acid-sodium acetate buffer solution (pH 3.0).…”

“… ( a ) Process for the solvothermal synthesis of PCN-224 and the PSM of PCN-224 with CDs [ 79 ]; ( b ) the preparation process of B-CDs@SiO 2 @GSH-AuNCs/Ag + and the schematic diagram of the detection of UO 2 2+ [ 80 ]. …”