电化学系统表面增强拉曼光谱探测鸟嘌呤与银纳米粒子的相互作用

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-01-02 DOI:10.1080/00387010.2022.2162546

Jie Li

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引用次数: 0

摘要

鸟嘌呤是一种典型的具有多种氨基/亚胺基的脱氧核糖核酸(DNA)碱基，具有显著的拉曼活性;然而，它的拉曼模式在固体拉曼测量中基本上是被禁止的，这阻碍了对这种DNA碱基化学性质的充分理解。本文报道了利用银电极修饰的胶体银纳米粒子作为衬底，对鸟嘌呤的表面增强拉曼散射(SERS)进行了研究。获得了具有电位依赖性的高质量SERS光谱，揭示了鸟嘌呤在纳米表面的不同吸附行为。还获得了高质量的吡啶酸分子SERS光谱。银纳米粒子涂层具有良好的稳定性和均匀的尺寸分布，为检测dna碱基和探测它们的局部相互作用提供了高度sers活性的底物。

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Probing the interactions of guanine on silver nanoparticles by surface-enhanced Raman spectroscopy on an electrochemical system

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.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.