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Surface-enhanced Raman scattering (SERS) and fluorescence spectroscopy were employed to probe the interaction of the pharmaceutical and natural product molecules, 20(R) and 20(S)-ginsenoside Rg3, with human serum albumin (HSA). Normal Raman spectra of 20(R) and 20(S)-ginsenoside Rg3 were obtained from solid powder on glass slide. Based on the splitting peaks near 1440cm −1 , the stacking modes...
Two new isomerous PET fluorescent chemosensors (L and L′) for Al3+ have been designed, synthesized and characterized. The two chemosensors exhibited fluorescence enhancement upon binding Al3+ in CH3CN by PET inhibition processes from both the sulfur and the nitrogen donors to anthracene. The job’s plot, Benesi–Hildebrand plot and 1H NMR titration experiments indicate that both chemosensors form a...
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