Intensified synthesis and post-synthetic modification of covalent organic frameworks using a continuous flow of microdroplets technique
SCIE
SCOPUS
- Title
- Intensified synthesis and post-synthetic modification of covalent organic frameworks using a continuous flow of microdroplets technique
- Authors
- Vikram Singh; JANG, SEUNGWOOK; VishwakarmaNiraj Kumar; KIM, DONG PYO
- Date Issued
- 2018-01
- Publisher
- NATURE PUBLISHING GROUP
- Abstract
- Covalent organic frameworks (COFs) are two-dimensional/three-dimensional crystalline polymeric materials with diverse molecular backbones and topologies and are strong candidates for numerous applications. However, the ready availability of these materials is a challenge. The key issues are slow production rates, harsher and longer reaction conditions, and a need for post-synthetic modification to obtain desired molecular functionalities. Only a few studies, including those using microfluidic techniques, have focused on refining these factors, but these reports lack synthetic continuity and scalability. Herein, we present a fast, intensified and continuous synthesis and post-synthetic modification of beta-ketoenamine-linked COFs by confining organic building units into moving microdroplets in a transparent capillary. This study introduces a one-step, facile approach to serially modify NO2- to NH2-substituted COFs in a fraction of the time, effort and cost of traditional methods. These results may stimulate the development of novel COFs with unique chemistries and functions for various applications.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/41192
- DOI
- 10.1038/am.2017.209
- ISSN
- 1884-4049
- Article Type
- Article
- Citation
- NPG Asia Materials, vol. 10, page. e456, 2018-01
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