Ouyang Wanyue, Wang Xun
Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China.
Precis Chem. 2023 Dec 1;2(1):21-27. doi: 10.1021/prechem.3c00087. eCollection 2024 Jan 22.
Herein, we present a facile strategy to prepare versatile aluminum oxide subnanometer nanosheets with oleic acid and stearic acid ligands (OA-Al SNSs and SA-Al SNSs, respectively). The size effect endows subnanosheets with abundant acting sites, remarkable intermolecular interactions, and unique polymer-like properties, including flexibility, viscoelasticity, and sol-gel transitions, which is quite different from traditional inorganic materials. Consequently, subnanosheets could form freestanding organogels and OA-Al SNSs exhibit satisfying semisolidification of various solvents, making it an intriguing candidate for the safe storage and transportation of solvents. Furthermore, SA-Al SNSs exhibit excellent adhesive properties of high strength on diverse substrates, and it is easy to erase it without any damage, demonstrating the promising prospects in practical applications.
在此，我们提出了一种简便的策略，用于制备分别带有油酸和硬脂酸配体的多功能氧化铝亚纳米纳米片（分别为OA-Al SNSs和SA-Al SNSs）。尺寸效应赋予亚纳米片丰富的作用位点、显著的分子间相互作用以及独特的类似聚合物的性质，包括柔韧性、粘弹性和溶胶-凝胶转变，这与传统无机材料有很大不同。因此，亚纳米片可以形成独立的有机凝胶，并且OA-Al SNSs对各种溶剂表现出令人满意的半固化性能，使其成为溶剂安全储存和运输的有趣候选材料。此外，SA-Al SNSs在多种基材上表现出优异的高强度粘附性能，并且很容易在不造成任何损坏的情况下擦除，展示了其在实际应用中的广阔前景。
