Premium
Langmuir–Blodgett Film of Asymmetric Calix[4]arene Derivative Modified Electrode for Voltammetric Determination of Silver
Author(s) -
Zou Lina,
Wu Xianli,
Li Yamin,
Yang Baocheng,
Zhang Shusheng,
Ye Baoxian
Publication year - 2011
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201000396
Subject(s) - calixarene , langmuir–blodgett film , selectivity , derivative (finance) , electrochemistry , chemistry , aqueous solution , ion , electrode , langmuir , inorganic chemistry , organic chemistry , molecule , catalysis , financial economics , economics
A new electrochemical voltammetric sensor, Langmuir–Blodgett (LB) film of 25,27‐dimethoxy‐26‐( N ‐trichloroacetyl)carbamoyloxy‐ p ‐tert‐butylcalix[4]arene (DCA) modified GCE (LB DCA –GCE), was designed and successfully used for recognition and determination of trace amounts of Ag + in water. Under the optimum experimental conditions, the lowest detectable concentration of Ag + reached 1 × 10 −9 mol L −1 . Moreover, LB DCA –GCE exhibited a well‐defined response relating to the Ag + with good sensitivity, selectivity, reproducibility, and long stability. The recognizing mechanism of LB DCA –GCE for silver ion in aqueous solution was also discussed. The results show that the size of calixarene cavity may be the predominate factor affecting recognition of calixarene for silver ions.