Fig. 7. Detection of standard carbon dioxide. (a) LSPR spectra of the AuNR substrate, CB6-functionalized AuNR substrate, and carbon dioxide-treated CB6-functionalized AuNR substrate. (b) Maximum peak wavelengths of the AuNR substrate, CB6-functionalized AuNR substrate, and carbon dioxide-treated CB6-functionalized AuNR substrate.
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