Polysulphides in dimethylformamide: a micro-Raman spectroelectrochemical study

✍ Scribed by F. Gaillard; E. Levillain; M.-C. Dhamelincourt; P. Dhamelincourt; J. P. Lelieur

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 325 KB
• Volume: 28
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/(sici)1097-4555(199707)28:7<511::aid-jrs119>3.0.co;2-4

✦ Synopsis

The reduction of sulphur and the redox properties of polysulphide anions in dimethylformamide (DMF) were studied by time-resolved spectroelectrochemistry, coupling cyclic voltammetry with micro-Raman spectrometry.

The measurement system allows one to record several spectra in real time during the potential scan of the working electrode. The data obtained under thin-layer conditions, at room temperature, were compared with those obtained by cyclic voltammetry and by visible time-resolved spectrophotometry. The variations of the Raman (535 cm-1) and visible (610 nm) characteristics of the radical anion during the potential scan for and S 3 -S 8 -DMF solutions are presented and these results are discussed.