An interpenetrating polymer network (IPN) containing natural DNA was prepared by cross-linking polyvinyl alcohol (PVA) with a glutaraldehyde (GA) reagent and then cross-linking DNA with UV irradiation. This DNA/PVA IPN structure could selectively bind chemicals with affinity for DNA, and adsorb L-tryptophan (L-Trp) with a high chiral-selectivity over D-Trp. More than ten times more L-Trp was adsorbed on the DNA/PVA IPN membrane than D-Trp. This readily available adsorbent has high prospects in diverse practical applications, such as the removal of pollutants from water, purification of medicines, as well as separation of enantiomers.
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interpenetrating polymer network;
Document Type: Research Article
Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo, Japan
Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education of China, Zhejiang Sci-Tech University, Hangzhou, China
Publication date: 01 January 2011