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The adsorbtion of toluene‐3,4‐dithiol (TDT) molecules on Ag islands was investigated with surface‐enhanced Raman spectroscopy (SERS). The SERS spectrum was compared with the ordinary Raman spectrum of TDT, and differences in spectral features were discussed with the support of density functional theory calculations. The disappearance of all the S–H‐related bands in the SERS spectrum indicates that...
Acid Organge 20 is a synthetic monoazo dye, which molecular structure consists of a naphtol unit and a sulfonated benezene ring linked together by an azo chromophore group. As a phenylazonaphthol with the OH group in para position respect to the azo group, it undergoes an azo‐hydrazone tautomerism. In this work, the study of the preponderance of one tautomer over the other in different pH conditions...
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