2021年2月
DNA-Chitosan Hydrogels: Formation, Properties, and Functionalization with Catalytic Nanoparticles
ACS APPLIED BIO MATERIALS
- ,
- ,
- ,
- 巻
- 4
- 号
- 2
- 開始ページ
- 1823
- 終了ページ
- 1832
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acsabm.0c01533
- 出版者・発行元
- AMER CHEMICAL SOC
DNA-chitosan (DNA-CS) hydrogels were prepared on the basis of interpolyelectrolyte complexes (IPEC) in a co-assembled regime by in situ charging of the polysaccharide in a DNA solution. In contrast to poorly controlled coacervates formed upon mixing of DNA and CS solutions, stable DNA-CS IPEC hydrogels are formed at near-stoichiometric ratios of DNA and chitosan ionogenic groups. Structure, stability, and ion absorption properties of such hydrogels depended strongly on the ratio between cationic (CS) and anionic (DNA) counterparts in hydrogels. Abundant aminoand nitrogen-containing aromatic groups of co-assembled DNA and CS make their hydrogel an efficient, multitarget absorbent toward metal ions. Such strong affinity of both DNA and CS to Au3+ cation was used to entrap Au3+ ions into the DNA-CS hydrogels. Subsequent reduction of Au-3(+). ion inside hydrogels resulted in the formation similar to 2-3 of nm size Au nanoparticles on DNA-CS scaffolds. Metallized hydrogels demonstrated catalytic activity in reduction of various nitroaromatics that depended on the ratio between CS and DNA in the hydrogel.
- リンク情報
- ID情報
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- DOI : 10.1021/acsabm.0c01533
- ISSN : 2576-6422
- Web of Science ID : WOS:000620346200066