{"title":"用于防污应用的硅表面硫硫化。","authors":"Xiaoning Zhang, Pei Gao, Valerie Hollimon, DaShan Brodus, Arion Johnson, Hongmei Hu","doi":"10.1186/s13065-018-0385-6","DOIUrl":null,"url":null,"abstract":"<p><p>Thiol groups grafted silicon surface was prepared as previously described. 1H,1H,2H,2H-perfluorodecanethiol (PFDT) molecules were then immobilized on such a surface through disulfide bonds formation. To investigate the contribution of PFDT coating to antifouling, the adhesion behaviors of Botryococcus braunii (B. braunii) and Escherichia coli (E. coli) were studied through biofouling assays in the laboratory. The representative microscope images suggest reduced B. braunii and E. coli accumulation densities on PFDT integrated silicon substrate. However, the antifouling performance of PFDT integrated silicon substrate decreased over time. By incubating the aged substrate in 10 mM TCEP·HCl solution for 1 h, the fouled PFDT coating could be removed as the disulfide bonds were cleaved, resulting in reduced absorption of algal cells and exposure of non-fouled silicon substrate surface. Our results indicate that the thiol-terminated substrate can be potentially useful for restoring the fouled surface, as well as maximizing the effective usage of the substrate.</p>","PeriodicalId":9842,"journal":{"name":"Chemistry Central Journal","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2018-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s13065-018-0385-6","citationCount":"6","resultStr":"{\"title\":\"Surface thiolation of silicon for antifouling application.\",\"authors\":\"Xiaoning Zhang, Pei Gao, Valerie Hollimon, DaShan Brodus, Arion Johnson, Hongmei Hu\",\"doi\":\"10.1186/s13065-018-0385-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Thiol groups grafted silicon surface was prepared as previously described. 1H,1H,2H,2H-perfluorodecanethiol (PFDT) molecules were then immobilized on such a surface through disulfide bonds formation. To investigate the contribution of PFDT coating to antifouling, the adhesion behaviors of Botryococcus braunii (B. braunii) and Escherichia coli (E. coli) were studied through biofouling assays in the laboratory. The representative microscope images suggest reduced B. braunii and E. coli accumulation densities on PFDT integrated silicon substrate. However, the antifouling performance of PFDT integrated silicon substrate decreased over time. By incubating the aged substrate in 10 mM TCEP·HCl solution for 1 h, the fouled PFDT coating could be removed as the disulfide bonds were cleaved, resulting in reduced absorption of algal cells and exposure of non-fouled silicon substrate surface. Our results indicate that the thiol-terminated substrate can be potentially useful for restoring the fouled surface, as well as maximizing the effective usage of the substrate.</p>\",\"PeriodicalId\":9842,\"journal\":{\"name\":\"Chemistry Central Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-02-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1186/s13065-018-0385-6\",\"citationCount\":\"6\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemistry Central Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1186/s13065-018-0385-6\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"Chemistry\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry Central Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1186/s13065-018-0385-6","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Chemistry","Score":null,"Total":0}
引用次数: 6
摘要
巯基接枝硅表面的制备方法如上所述。然后通过形成二硫键将1H,1H,2H,2H-全氟十二硫醇(PFDT)分子固定在该表面上。为了研究PFDT涂层对防污的贡献,通过实验室生物沾污试验研究了布劳尼芽孢杆菌(B. braunii)和大肠杆菌(E. coli)的粘附行为。有代表性的显微镜图像显示,在PFDT集成硅衬底上,布朗氏杆菌和大肠杆菌的聚集密度降低。然而,随着时间的推移,PFDT集成硅衬底的防污性能下降。老化的衬底在10 mM TCEP·HCl溶液中孵育1小时,由于二硫键的断裂,污染的PFDT涂层可以被去除,从而减少了藻类细胞的吸收,暴露了未污染的硅衬底表面。我们的研究结果表明,巯基端底物可以潜在地用于修复污染表面,以及最大限度地有效利用底物。
Surface thiolation of silicon for antifouling application.
Thiol groups grafted silicon surface was prepared as previously described. 1H,1H,2H,2H-perfluorodecanethiol (PFDT) molecules were then immobilized on such a surface through disulfide bonds formation. To investigate the contribution of PFDT coating to antifouling, the adhesion behaviors of Botryococcus braunii (B. braunii) and Escherichia coli (E. coli) were studied through biofouling assays in the laboratory. The representative microscope images suggest reduced B. braunii and E. coli accumulation densities on PFDT integrated silicon substrate. However, the antifouling performance of PFDT integrated silicon substrate decreased over time. By incubating the aged substrate in 10 mM TCEP·HCl solution for 1 h, the fouled PFDT coating could be removed as the disulfide bonds were cleaved, resulting in reduced absorption of algal cells and exposure of non-fouled silicon substrate surface. Our results indicate that the thiol-terminated substrate can be potentially useful for restoring the fouled surface, as well as maximizing the effective usage of the substrate.
期刊介绍:
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