Surface-enhanced fluorescence and application study based on Ag-wheat leaves

Chinese Physics B - Tập 31 Số 3 - Trang 037803 - 2022
Hongwen Cao1, Liting Guo1, Zhen Sun1, Tifeng Jiao2, Mingli Wang1
1State Key Laboratory of Materials Science & Technology and Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
2Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China

Tóm tắt

Wheat leaves with natural microstructures as substrates were covered by the silver nanoislands by magnetron to prepare a low-cost, environment-friendly and mass production surface-enhanced fluorescence (SEF) substrate (Ag-WL substrate). The best SEF substrate was selected by repeatly certifying the fluorescence intensity of 10−5 M Rhodamine B (RB) and 10−5 M Rhodamine 6G (R6G) aqueous solutions. The abundant semi-spherical protrusions and flake-like structures on the surface of the Ag-WL substrate produce high-density hot spots, which provides a new and simple idea for the preparation of biomimetic materials. The results of 3D finite-different time-domain (FDTD) simulation show that the nanoisland gap of semi-spherical protrusions and flake-like structures has produced rich hotspots. By adjusting the time of magnetron sputtering, the enhancement factor (EF) was as high as 839 times, relative standard deviation (RSD) reached as low as 10.7%, and the substrate was very stable and repeatable, which shows that Ag-WL substrate is trustworthy. Moreover, semi-spherical protrusions provide stronger surface-enhanced Raman scattering (SERS) effects compared to flake-like structure. What is more surprising is that the detection limit of the substrate for toxic substance crystal violet (CV) is as low as 10−10 M.

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Tài liệu tham khảo

Huang, 2020, Sci. China (Chem.), 12, 1742, 10.1007/s11426-020-9855-3

Cheng, 2015, Chin. Phys. Lett., 32, 10.1088/0256-307X/32/11/117801

Liu, 2012, Chin. Phys. B, 21, 10.1088/1674-1056/21/3/037803

Wang, 2020, Chin. Chem. Lett., 12, 3149, 10.1016/j.cclet.2020.08.039

Wang, 2021, Opt. Commun., 481, 10.1016/j.optcom.2020.126522

Zhu, 2019, Acta Phys. Sin., 68, 10.7498/aps

Wei, 2011, Nanotechnology, 22, 10.1088/0957-4484/22/32/325604

Deng, 2009, Anal. Chem., 81, 7248, 10.1021/ac900947h

Gill, 2011, Phys. Chem. Chem. Phys., 13, 10.1039/c1cp21008d

Schmidtke, 2013, Nanoscale, 5, 10.1039/c3nr04155g

Sun, 2018, Anal. Chem., 90, 3099, 10.1021/acs.analchem.7b04051

Zhu, 2019, Acta Phys. Sin., 68, 10.7498/aps

Chang, 2017, J. Phys. Chem. C, 121, 8070, 10.1021/acs.jpcc.7b00688

Xia, 2017, Angew. Chem. Int. Edit., 56, 60, 10.1002/anie.201604731

Ma, 2015, Chin. Phys. Lett., 32, 10.1088/0256-307X/32/9/094202

Yin, 2018, Chin. Phys. B, 27, 10.1088/1674-1056/27/9/097803

Omidvar, 2016, Chin. Phys. B, 25, 10.1088/1674-1056/25/11/118102

Kinkhabwala, 2010, Nat. Photon., 3, 654, 10.1038/nphoton.2009.187

Guo, 2021, Opt. Express, 29, 5152, 10.1364/OE.418551

Chen, 2008, Spectrochim. Acta A, 69, 733, 10.1016/j.saa.2007.05.030

Meng, 2019, Acta Phys. Sin., 68, 10.7498/aps.68.20191121

Shi, 2018, Appl. Surf. Sci., 459, 802, 10.1016/j.apsusc.2018.08.065

Nag, 2009, J. Photoch. Photobio. A, 206, 188, 10.1016/j.jphotochem.2009.06.007

Lakowicz, 2005, Analytical Biochemistry, 337, 171, 10.1016/j.ab.2004.11.026

Boyack, 2009, Phys. Chem. Chem. Phys., 11, 7398, 10.1039/b905645a

Dong, 2012, Appl. Phys. Lett., 100, 10.1063/1.3681420

Zhang, 2010, J. Appl. Phys., 107, 10.1063/1.3284081

Ji, 2010, J. Raman Spectrosc., 40, 31, 10.1002/jrs.v40:1

Wang, 2018, Allergy, 73, 1232, 10.1111/all.2018.73.issue-6

Yan, 2019, Appl. Surf. Sci., 479, 879, 10.1016/j.apsusc.2019.02.072

Shang, 2019, Opt. Commun., 51, 345, 10.1016/j.optcom.2019.07.001

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Chinese Physics B

Tập 31 Số 3

037803

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