Premium
Chiral recognition of tryptophan enantiomers based on a polypyrrole‐flake graphite composite electrode column
Author(s) -
Kong Yong,
Li Xueying,
Yao Chao,
Wei Jingxuan,
Chen Zhidong
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.36767
Subject(s) - polypyrrole , composite number , materials science , enantiomer , graphite , electrode , polymerization , pyrrole , phase (matter) , conductive polymer , chemical engineering , electrochemistry , doping , composite material , polymer chemistry , organic chemistry , chemistry , polymer , optoelectronics , engineering
A polypyrrole (PPy)‐flake graphite composite was synthesized by in situ polymerization of pyrrole on flake graphite surface, and the resulting organic–inorganic composite material was developed as the conductive stationary phase in an electrode column for enantioselective recognition of tryptophan (Trp) enantiomers. Compared with the stationary phase made up with conducting PPy, the conductivity of the composite stationary phase was enhanced significantly. As a result, satisfactory enantioselectivity of Trp enantiomers can be achieved easily by modulating the potential applied on the electrode column. Various important parameters influencing the performance of the composite electrode column were investigated to obtain the optimum recognition efficiency. A recognition efficiency of 3.7 could be achieved under the optimum conditions. Enantioselectivity of the composite material for Trp enantiomers is attributed to the reversible doping/de‐doping properties of PPy. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012