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光转换银纳米颗粒对表面增强拉曼光谱基底性能的形貌效应

Morphology Effect of Photoconverted Silver Nanoparticles on the Performance of Surface-Enhanced Raman Spectroscopy Substrates.

作者信息

Puente Carlos, Pineda Aguilar Nayely, Gómez Idalia, López Israel

机构信息

Facultad de Ciencias Químicas, Centro de Investigación en Biotecnología y Nanotecnología, Laboratorio de Nanociencias y Nanotecnología, Universidad Autónoma de Nuevo León (UANL), Autopista al Aeropuerto Internacional Mariano Escobedo Km. 10, Parque de Investigación e Innovación Tecnológica, Apodaca 66629, Nuevo León, Mexico.

Centro de Investigación en Materiales Avanzados, S.C. (CIMAV), Unidad Monterrey, Alianza Norte 202, Apodaca 66628, Nuevo León, Mexico.

出版信息

ACS Omega. 2023 Mar 27;8(14):12630-12635. doi: 10.1021/acsomega.2c05958. eCollection 2023 Apr 11.

DOI:10.1021/acsomega.2c05958
PMID:37065055
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10099118/
Abstract

Nowadays, surface-enhanced Raman spectroscopy (SERS) substrates are of great interest for many researchers, aiming to fabricate substrates with high sensitivity and low fabrication costs. In this study, we photoconverted Ag nanoparticles by using a simple and affordable red-green-blue light-emitting diode photoreactor. The obtained dispersions were transformed into a paste of nanoparticles and used to fabricate SERS substrates by a simple drop-casting process under controlled humidity conditions. The performance of these substrates was tested using -aminothiophenol as a Raman probe. The results indicate that the particle shape has an influence on the Raman intensities and substrate sensitivity, showing a significant enhancement as the number of faces and vertices in the particle increases.

摘要

如今，表面增强拉曼光谱（SERS）基底引起了许多研究人员的极大兴趣，他们旨在制造出具有高灵敏度和低制造成本的基底。在本研究中，我们使用简单且经济实惠的红-绿-蓝发光二极管光反应器对银纳米颗粒进行光转换。将得到的分散体转化为纳米颗粒糊状物，并在受控湿度条件下通过简单的滴铸工艺用于制造SERS基底。使用对氨基硫酚作为拉曼探针测试了这些基底的性能。结果表明，颗粒形状对拉曼强度和基底灵敏度有影响，随着颗粒中面和顶点数量的增加，显示出显著的增强。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/090cad991e3a/ao2c05958_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/42dcd7a78ffc/ao2c05958_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/db440cf34e4c/ao2c05958_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/49499a5e3888/ao2c05958_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/3174ae0935a2/ao2c05958_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/090cad991e3a/ao2c05958_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/42dcd7a78ffc/ao2c05958_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/db440cf34e4c/ao2c05958_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/49499a5e3888/ao2c05958_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/3174ae0935a2/ao2c05958_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e969/10099118/090cad991e3a/ao2c05958_0006.jpg

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本文引用的文献

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Porous carbon nanowire array for surface-enhanced Raman spectroscopy.多孔碳纳米线阵列用于表面增强拉曼光谱学。
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Noble-Metal Nanocrystals with Controlled Shapes for Catalytic and Electrocatalytic Applications.用于催化和电催化应用的具有可控形状的贵金属纳米晶体。
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Preparation of Aptamer Responsive DNA Functionalized Hydrogels for the Sensitive Detection of α-Fetoprotein Using SERS Method.基于 SERS 法的适配体响应性 DNA 功能化水凝胶的制备及其对甲胎蛋白的灵敏检测。
Bioconjug Chem. 2020 Mar 18;31(3):813-820. doi: 10.1021/acs.bioconjchem.9b00874. Epub 2020 Jan 31.
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