A novel photoresponsive molecularly imprinted polymers based on etched silicon core with enabling enhanced selectivity and sensitivity for the detection of sulfamethazine

Sulfamethymidine, a sulfonamide commonly employed, is introduced into the human body through the food chain, posing a threat to human health. Consequently, the development of a rapid and efficient detection technique becomes imperative. In this investigation, a photoresponsive sulfamemethyridiazine imprinted polymer was synthesized to etch a silicon core, thereby effectively addressing the limitations encountered with conventional molecularly imprinted polymers, including diminished binding capacity, restricted site accessibility, and sluggish binding kinetics. The photosensitive monomer utilized in the molecularly imprinted polymers (MIPs) is 5[(4 (methylacryloxy) phenyl) diazene] mphthalic acid, which exhibits a stimulating reaction mechanism. The N=N bond undergoes photoisomerization, transitioning between trans and cis configurations. The adsorption experiment provides additional evidence that the hollow molecularly imprinted polymers exhibit a higher adsorption capacity, achieving a value of 0.192 mmol L −1 . The experiments conducted to assess selectivity and repeatability confirm that the photoresponsive MIPs exhibit a high level of selectivity and favorable repeatability. Following four cycles, the adsorption rate consistently remains at 64.3%. After undergoing four cycles, the adsorption rate remains consistently at 64.3%. Additionally, the recoveries of the actual samples ranged from 95.6% to 99.7%. This finding presents a novel approach to detecting the concentration of trace pollutants in intricate substrates. This article is protected by copyright. All rights reserved.