{"title":"硫代-嵌合-辅助合成全共轭苯并噻吩连接共价有机框架,实现强增强型光电催化铀萃取","authors":"Yuxiang Zhao, Shengfei Li, Junyi Han, Guangen Fu, Lisha Liang, Mengwei Chen, Xu Wang, Tao Zhang","doi":"10.1021/acsmaterialslett.4c01042","DOIUrl":null,"url":null,"abstract":"Linear polythiophene materials have exhibited great potential in photo- and electrocatalysis due to their tunable electronic structures and excellent photoelectroactivity. Expanding the thiophene structure from a one-dimensional linear polymer to a two-dimensional covalent organic framework (2D COF) is expected to further enhance the light absorption/conversion efficiency. Here we show the synthesis of a fully conjugated 2D benzothiophene-linked COF (2DCOF-S) by the postmodification of a bromine-functionalized, vinyl-linked 2D COF (i.e., v-2DCOF-Br) through thiolation annulation. The high π conjugation largely extended the light absorption edge from 480 to 800 nm. Furthermore, an intrinsic donor–acceptor (D-A) structure between the benzothiophene and triazine cores was obtained, which significantly improves the separation capability of photogenerated electrons and holes. Finally, we demonstrate that the 2DCOF-S exhibited excellent performance in photoelectrocatalytic uranium extraction, in which the maximum saturated adsorption capacity of uranium is up to 643 mg g<sup>–1</sup> within 2 h, which is superior to most COF-based extraction materials.","PeriodicalId":19,"journal":{"name":"ACS Materials Letters","volume":"1 1","pages":""},"PeriodicalIF":8.7000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thiolation-Annulation-Assisted Synthesis of Fully Conjugated Benzothiophene-Linked Covalent Organic Framework toward Strongly Enhanced Photoelectrocatalytic Uranium Extraction\",\"authors\":\"Yuxiang Zhao, Shengfei Li, Junyi Han, Guangen Fu, Lisha Liang, Mengwei Chen, Xu Wang, Tao Zhang\",\"doi\":\"10.1021/acsmaterialslett.4c01042\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Linear polythiophene materials have exhibited great potential in photo- and electrocatalysis due to their tunable electronic structures and excellent photoelectroactivity. Expanding the thiophene structure from a one-dimensional linear polymer to a two-dimensional covalent organic framework (2D COF) is expected to further enhance the light absorption/conversion efficiency. Here we show the synthesis of a fully conjugated 2D benzothiophene-linked COF (2DCOF-S) by the postmodification of a bromine-functionalized, vinyl-linked 2D COF (i.e., v-2DCOF-Br) through thiolation annulation. The high π conjugation largely extended the light absorption edge from 480 to 800 nm. Furthermore, an intrinsic donor–acceptor (D-A) structure between the benzothiophene and triazine cores was obtained, which significantly improves the separation capability of photogenerated electrons and holes. Finally, we demonstrate that the 2DCOF-S exhibited excellent performance in photoelectrocatalytic uranium extraction, in which the maximum saturated adsorption capacity of uranium is up to 643 mg g<sup>–1</sup> within 2 h, which is superior to most COF-based extraction materials.\",\"PeriodicalId\":19,\"journal\":{\"name\":\"ACS Materials Letters\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":8.7000,\"publicationDate\":\"2024-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Materials Letters\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1021/acsmaterialslett.4c01042\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Materials Letters","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1021/acsmaterialslett.4c01042","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Linear polythiophene materials have exhibited great potential in photo- and electrocatalysis due to their tunable electronic structures and excellent photoelectroactivity. Expanding the thiophene structure from a one-dimensional linear polymer to a two-dimensional covalent organic framework (2D COF) is expected to further enhance the light absorption/conversion efficiency. Here we show the synthesis of a fully conjugated 2D benzothiophene-linked COF (2DCOF-S) by the postmodification of a bromine-functionalized, vinyl-linked 2D COF (i.e., v-2DCOF-Br) through thiolation annulation. The high π conjugation largely extended the light absorption edge from 480 to 800 nm. Furthermore, an intrinsic donor–acceptor (D-A) structure between the benzothiophene and triazine cores was obtained, which significantly improves the separation capability of photogenerated electrons and holes. Finally, we demonstrate that the 2DCOF-S exhibited excellent performance in photoelectrocatalytic uranium extraction, in which the maximum saturated adsorption capacity of uranium is up to 643 mg g–1 within 2 h, which is superior to most COF-based extraction materials.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.