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Tetrafluoroborate Selective Electrodes on the Basis of Cations with Delocalized Charge
Author(s) -
Studenyak Yaroslav,
Fershal Maksym,
Kushnir Larysa,
Gomonnai Alexander V.
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201200130
Subject(s) - tetrafluoroborate , electrode , chemistry , inorganic chemistry , delocalized electron , ion , electrochemistry , organic chemistry , ionic liquid , catalysis
Screening of active substances based on styryl and trimethine cyanine dyes was carried out to prepare tetrafluoroborate ion‐selective electrodes. Correlations between the nature of the organic cation (p K a ) and working pH ranges of the sensors were studied. New tetrafluoroborate‐selective PVC membrane electrodes based on an active substance formed by the ion pair of 2‐( n ‐ethylcarbazol‐3)‐ethenyl‐1,3,3‐trimethyl‐3 H ‐indolium and 2‐[3‐(5,6‐dimethyl‐3‐nonyl‐1,3‐benzothiazol‐2(3 H )‐ylidene)propenyl]‐5,6‐dimethyl‐3‐nonyl‐1,3‐benzothiazolium with tetrafluoroborate ion were developed. The electrodes are non‐sensitive to pH in the range of 2–8 and can be used for boron determination in acidic media of 6–7 mol L −1 H 2 SO 4 . The developed sensor was successfully applied for the determination of B 2 O 3 in CdS(Se) nanocrystal‐doped glasses.