TY - JOUR
T1 - In Situ Measurement and Monitoring of Diphenyl Disulfide in Ethanol Solution by SERS
AU - Wu , Shiwei
AU - liu , Yu
AU - Wang , Jing
AU - Ma , Caiqing
AU - Zhang , Yao
AU - Xia , Lixin
JO - Journal of Atomic and Molecular Sciences
VL - 2
SP - 84
EP - 87
PY - 2017
DA - 2017/08
SN - 8
DO - http://doi.org/10.4208/jams.060417.090517a
UR - https://global-sci.org/intro/article_detail/jams/10575.html
KW - --
AB - <p style="text-align: justify;">Diphenyl disulfide (DPDS) finds a wide range of applications in organic synthesis, polymer manufacture, and other 
fields. The structure of the DPDS molecule makes it amenable to monitor by Raman spectroscopy. Studying the fate of 
DPDS in the course of chemical reactions is of great significance for delineating mechanisms. In this work, the 
normal Raman and surface-enhanced Raman spectroscopy (SERS) signals of DPDS in ethanol solution have been 
characterized. In ethanol solution, the Raman signals of DPDS are completely obscured by the solvent signal. 
However, after irradiation for more than 10 s, a characteristic peak of DPDS appears at ν=2544 $cm^{-1}$ (in both normal 
Raman and SERS), and a further peak at ν=1582 $cm^{-1}$ appears in the SERS spectrum. Hence, in situ measurement and 
monitoring of DPDS in ethanol solution by SERS is feasible. It would allow us to reveal the micro mechanisms of 
chemical reactions, determine kinetic characteristics, estimate reasonable reaction end points, improve reaction 
selectivity, assess the quality and yield of the product, and so on.</p>