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Pan Li, Xia Zhou, Honglin Liu, Liangbao Yang and Jinhuai Liu Surface-enhanced Raman evidence for Rhodamine 6 G and its derivative with different adsorption geometry to colloidal silver nanoparticle Journal of Raman Spectroscopy 44

Version of Record online: 3 JUN 2013 | DOI: 10.1002/jrs.4319

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The pH-dependent study reveals that the structure of R6G is irreversibly stabilized or ‘locked’ in its form and is no longer responsive to pH changes. In contrast, R-NH2 is still sensitive to pH and can be switched between its open-ring and closed-ring structures.

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