In-Paper Self-Assembly of Cellulose Oligomers for the Preparation of All-Cellulose Functional Paper
In-Paper Self-Assembly of Cellulose Oligomers for the Preparation of All-Cellulose Functional Paper
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DOI：
10.1021/acssuschemeng.1c00815
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发表时间：
2021-04-14
影响因子：
8.4
通讯作者：
Serizawa, Takeshi
中科院分区：
文献类型：
--
作者：
Hanamura, Misaki;Sawada, Toshiki;Serizawa, Takeshi
纸张作为一种可持续的、廉价的、便携式的材料，具有广泛的应用，受到越来越多的关注，并且已经通过化学或物理改性方法进行了功能化。尽管如此，仍然需要简单方便的修改方法。在这项研究中，我们展示了一种通过纸中功能性纤维素低聚物的异相成核自组装来非共价改性纤维素纸的新策略。通过用低聚物的碱性水溶液，然后用酸性水溶液逐步浸渍纸张，可以简单地实现有效且稳定的改性。采用末端叠氮基的纤维素低聚物制备化学反应性全纤维素纸。当通过 Huisgen 环加成反应将炔基化生物素固定在叠氮化纸上时，成功检测到具有高信背景比的抗生物素免疫球蛋白 G。叠氮化纸的长期功能稳定性和可重复使用性也得到了证明。使用水溶液对功能性纤维素低聚物进行纸内自组装可以方便地构建各种可持续的全纤维素纸基器件。
Paper has gained increasing attention as a sustainable, inexpensive, and portable material for a wide variety of applications and has been functionalized by chemical or physical modification methods. Nevertheless, simple and convenient modification methods are still required. In this study, we demonstrate a new strategy for noncovalently modifying cellulose paper via the heterogeneous nucleation-based self-assembly of functional cellulose oligomers in paper. Efficient and stable modification was simply achieved by the stepwise impregnation of paper with aqueous alkaline solutions of the oligomers and then with aqueous acid solutions. The chemically reactive all-cellulose paper was prepared by using cellulose oligomers with a terminal azido group. When alkynylated biotin was immobilized on azidated paper via Huisgen cycloaddition reactions, anti-biotin immunoglobulin G was successfully detected with a high signal-to-background ratio. The long-term functional stability and reusability of azidated paper were also demonstrated. The in-paper self-assembly of functional cellulose oligomers using aqueous solutions would conveniently construct various sustainable all-cellulose paper-based devices.