{"title":"Probing the interactions of guanine on silver nanoparticles by surface-enhanced Raman spectroscopy on an electrochemical system","authors":"Jie Li","doi":"10.1080/00387010.2022.2162546","DOIUrl":null,"url":null,"abstract":"Abstract As a typical deoxyribonucleic acid (DNA) base with diverse amino/imino groups, guanine has remarkable Raman activity; however, its Raman modes are largely forbidden in solid Raman measurements, which hinders full understanding of the chemistry of such DNA bases. Here a study on surface-enhanced Raman scattering (SERS) of guanine is reported by employing colloidal silver nanoparticles modified on the silver electrode as substrate. High-quality SERS spectra with potential dependence were obtained, shedding light on the varying adsorption behavior of guanine on the nano-surface. High-quality SERS spectra have also been obtained for picolinic acid molecules. The good stability and homogeneous size distribution of silver nanoparticle coatings provide a highly SERS-active substrate for detecting DNA-bases and probing their local interactions.","PeriodicalId":21953,"journal":{"name":"Spectroscopy Letters","volume":"56 1","pages":"42 - 50"},"PeriodicalIF":1.1000,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Spectroscopy Letters","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1080/00387010.2022.2162546","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"SPECTROSCOPY","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract As a typical deoxyribonucleic acid (DNA) base with diverse amino/imino groups, guanine has remarkable Raman activity; however, its Raman modes are largely forbidden in solid Raman measurements, which hinders full understanding of the chemistry of such DNA bases. Here a study on surface-enhanced Raman scattering (SERS) of guanine is reported by employing colloidal silver nanoparticles modified on the silver electrode as substrate. High-quality SERS spectra with potential dependence were obtained, shedding light on the varying adsorption behavior of guanine on the nano-surface. High-quality SERS spectra have also been obtained for picolinic acid molecules. The good stability and homogeneous size distribution of silver nanoparticle coatings provide a highly SERS-active substrate for detecting DNA-bases and probing their local interactions.
期刊介绍：
Spectroscopy Letters provides vital coverage of all types of spectroscopy across all the disciplines where they are used—including novel work in fundamental spectroscopy, applications, diagnostics and instrumentation. The audience is intended to be all practicing spectroscopists across all scientific (and some engineering) disciplines, including: physics, chemistry, biology, instrumentation science, and pharmaceutical science.
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