https://www.selleckchem.com/pr....oducts/Tretinoin(Abe
We revisit the reductive coupling of p-nitrothiophenol (NTP) to form dimercaptoazobenzene (DMA, herein monitored through gap-mode tip-enhanced Raman spectroscopy (TERS) and nanoimaging. We employ a plasmonic Au probe (100 nm diameter at its apex) illuminated with a 633 nm laser source (50 μW/μm2 at the sample position) to image an NTP-coated faceted silver nanoparticle (∼70 nm diameter). A detailed analysis of the recorded spectra reveals that anionic NTP species contribute to the recorded spectral images, in addition to th