共价有机框架中的工程化螺旋位错

Engineering Screw Dislocations in Covalent Organic Frameworks.

作者信息

Dhokale Bhausaheb, Coe-Sessions Kira, Wenzel Michael J, Davies Alathea E, Kelsey Taylor, Brant Jonathan A, Oliveira Laura de Sousa, Parkinson Bruce A, Hoberg John O

机构信息

Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071, United States.

Department of Civil Engineering, University of Wyoming, Laramie, Wyoming 82071, United States.

出版信息

J Am Chem Soc. 2024 Dec 4;146(48):33048-33055. doi: 10.1021/jacs.4c07859. Epub 2024 Sep 20.

DOI:10.1021/jacs.4c07859

PMID:39302024

Abstract

We report the application of a Pictet-Spengler reaction to the synthesis of covalent organic frameworks (COFs) using functionalized terephthalaldehydes. The COFs produced show an increased propensity to generate screw dislocations and produce multilayered flakes when compared with other 2D-COFs. Using HRTEM, definitive evidence for screw dislocations was obtained and is presented. The effects on separations using these materials in membranes are also reported.

摘要

我们报道了皮克特-施彭格勒反应在使用功能化对苯二甲醛合成共价有机框架（COF）中的应用。与其他二维COF相比，所制备的COF表现出更高的产生螺旋位错和生成多层薄片的倾向。使用高分辨率透射电子显微镜（HRTEM）获得并展示了螺旋位错的确切证据。还报道了这些材料在膜中对分离性能的影响。