Percot A, Maurel M C, Lambert J F, Zins E L
Sorbonne Université, CNRS, MONARIS, UMR8233, F-75005 Paris, France.
Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS,MNHN, UMR7205, ISYEB, F-75005 Paris, France.
Spectrochim Acta A Mol Biomol Spectrosc. 2024 Jun 5;314:124177. doi: 10.1016/j.saa.2024.124177. Epub 2024 Mar 20.
The SERS response of adenine is one of the most studied, due to its outstanding exaltation. However, the spectra obtained strongly differ according to the experimental conditions and still remain not well understood. To be able to search for the presence of this molecule in complex environments, it is essential to better understand the SERS response of adenine alone. After a brief presentation of the literature on the subject, we present results suggesting that the experimental spectra would result from the overlap of different spectroscopic signatures, that may probably be due to different non-covalent interactions or different electromagnetic fields experienced by adenine molecules. An independent component analysis is reported. Our results underline the difficulty to precisely analyze the experimental data, the need to continue this research and to constitute data banks that would allow comparing the spectra obtained in different laboratories according to the experimental conditions.
由于腺嘌呤具有显著的增强效应，其表面增强拉曼光谱（SERS）响应是研究最多的之一。然而，根据实验条件获得的光谱差异很大，并且仍然没有得到很好的理解。为了能够在复杂环境中寻找这种分子的存在，更好地理解单独腺嘌呤的SERS响应至关重要。在简要介绍了关于该主题的文献后，我们给出的结果表明，实验光谱可能是由不同光谱特征的重叠导致的，这可能是由于腺嘌呤分子经历的不同非共价相互作用或不同电磁场造成的。本文报道了一种独立成分分析方法。我们的结果强调了精确分析实验数据的困难，需要继续这项研究并建立数据库，以便能够根据实验条件比较不同实验室获得的光谱。
