Chemical-Driven Assembly Synthesis of Self-Stabilizing Massage Ball-Type QD Microspheres for High-Performance Fluorescence Quantitative Detection

= 0.994 and 0.995), with the concentration of dopamine ranging from 0.013 to 2.611 μM and 1 to 1024 μM, and the limit of detection was 5.36 nM, enabling the determination of dopamine at varying levels. The fluorescent sensor with high sensitivity and selectivity was successfully applied to the detection of DA in real serum and urine with recovery rates of 93.18% to 104.74%. This microsphere construction technology provided a new way for improving the properties of QDs in disease diagnosis and treatment.