Intelligent Cellulose-Based Sorbent for Light-Driven Solid-Phase Extraction of Amphetamine
Abstract
An intelligent cellulose-based sorbent (Cell-Azo) was developed by grafting azobenzene onto cellulose via atom-transfer radical polymerization, enabling the light-driven solid-phase extraction of amphetamine (AMP). Successful grafting was verified by FT-IR and XPS, with UV–vis spectroscopy demonstrating the rapid and reversible trans – cis isomerization upon alternating UV/visible light irradiation. Batch adsorption studies revealed a maximum capacity of 19.86 mg·g –1 at pH 9.0, governed by synergistic electrostatic, π-π stacking, and hydrogen-bonding interactions. The core functionality of the switch was demonstrated by triggering AMP release with UV light, achieving a high desorption efficiency of 90.54%, significantly surpassing the
Fields of Study & Subjects
Analytical chemistry methods development
Electrochemical sensors and biosensors
Analytical Chemistry and Chromatography
Publication details
- Journal / source
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Volume
- 42
- Issue
- 9
- Pages
- 7006–7017
- Publication date
- 27 February 2026
- Language
- EN