Carbazole-Based Imine-Linked Covalent Organic Framework for Efficient Heterogeneous Photocatalysis,ACS Applied Polymer Materials

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Carbazole-Based Imine-Linked Covalent Organic Framework for Efficient Heterogeneous Photocatalysis
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2024-03-27 , DOI: 10.1021/acsapm.3c03207
Kamal Verma ₁ , Matthew A. Addicoat ₂ , K. R. Justin Thomas ₁

Affiliation

Donor–acceptor covalent organic framework (COF) materials have proven to be an optimal choice for heterogeneous photocatalysis due to their capacity for effective charge separation and harvesting of visible light. The poor chemical and photostability of imine-linked D–A COFs restrict their potential for broader applications. So, researchers are focused on developing imine-linked COFs with enhanced photocatalytic activity. In this study, we also emphasize the pivotal role of molecular engineering to overcome these challenges. Herein, a carbazole-based highly crystalline D–A CzDA-TAPT COF was developed. Not only does the incorporation of the alkyl group-substituted carbazole provide excellent donor ability, but also the butyl groups in the pore skeleton guide the attachment of successive layers in different AB stackings, significantly amplifying the photocatalytic efficiency of the CzDA-TAPT COF by providing more active sites for the reaction. Compared with previously reported photoactive benzothiadiazole-based COFs, this innovative material exhibits superior charge separation and heightened photostability, resulting in a notable advancement in the photocatalytic aerobic oxidation of aryl boronic acids to phenols.

中文翻译：

用于高效多相光催化的咔唑基亚胺连接共价有机框架

供体-受体共价有机骨架（COF）材料已被证明是异质光催化的最佳选择，因为它们具有有效的电荷分离和可见光收集的能力。亚胺连接的 D-A COF 较差的化学稳定性和光稳定性限制了其更广泛应用的潜力。因此，研究人员致力于开发具有增强光催化活性的亚胺连接的COF。在这项研究中，我们还强调了分子工程在克服这些挑战方面的关键作用。在此，开发了一种基于咔唑的高结晶 D-A CzDA-TAPT COF。烷基取代的咔唑的引入不仅提供了优异的供体能力，而且孔骨架中的丁基引导不同AB堆叠中连续层的附着，通过提供更多的反应活性位点。与之前报道的光活性苯并噻二唑基COF相比，这种创新材料表现出优异的电荷分离和更高的光稳定性，从而在芳基硼酸光催化有氧氧化成酚方面取得了显着进展。

更新日期：2024-03-27

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