Framework Response-Activated SERS Sensing: A Guest-Induced "Gate-Opening" Strategy for Ultrasensitive Sub-Ppt Formaldehyde Detection
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Precise in situ monitoring of trace formaldehyde (CH2O), a high-risk indoor volatile organic compound (VOC), is critical for public health. However, direct surface-enhanced Raman scattering detection remains a formidable challenge due to the negligible Raman s... ...
