Chwojnowska Elżbieta, Grzonka Justyna, Justyniak Iwona, Ratajczyk Tomasz, Lewiński Janusz
Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland.
iScience. 2022 Dec 14;26(1):105759. doi: 10.1016/j.isci.2022.105759. eCollection 2023 Jan 20.
Hybrid materials based on inorganic nanocrystals with organic polymers feature peculiar and fascinating properties and various applications. However, there is still a need for simple synthesis procedures that provide precise control over the polymer/nanocrystal microstructure of these materials. Herein, a novel organometallic approach to polymer-coated ZnO nanocrystals was developed. The presented method merges the initial ring-opening polymerization of ϵ-caprolactone mediated by an organozinc alkoxide initiator and an air-promoted transformation of the resulting macromolecular organozinc species. This one-pot procedure results in quantum-sized ZnO crystals with a core diameter of ca 3 nm coated by poly(ϵ-caprolactone) covalently bonded to the surface. Overall, the ability to create well-defined hybrid composites should provide a unique ability to access various nanosystems.
基于无机纳米晶体与有机聚合物的杂化材料具有独特而迷人的性质及多种应用。然而，仍需要简单的合成程序来精确控制这些材料的聚合物/纳米晶体微观结构。在此，开发了一种制备聚合物包覆ZnO纳米晶体的新型有机金属方法。所提出的方法将由有机锌醇盐引发剂介导的ε-己内酯的初始开环聚合与所得大分子有机锌物种的空气促进转化相结合。这种一锅法可得到量子尺寸的ZnO晶体，其核心直径约为3 nm，表面共价键合有聚（ε-己内酯）。总体而言，制备结构明确的杂化复合材料的能力应能提供一种独特的能力来获得各种纳米系统。
