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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 2
BKCSDE 31(2)
February 20, 2010 

 
Title
Copper(II) Selective PVC Membrane Electrodes Based on Schiff base 1,2-Bis (E-2-hydroxy benzylidene amino)anthracene-9,10-dione Complex as an Ionophore
Author
Eunseon Jeong, Hyo Kyoung Lee, Mohammad Shamsuddin Ahmed, Hyungran Seo, Seungwon Jeon*
Keywords
Schiff base, Copper-ion selective electrode, Potentiometry, Ionophore, 1,2-Bis(E-2-hydroxy benzylidene amino)anthracene-9,10-dione
Abstract
The Schiff base 1,2-bis(E-2-hydroxy benzylidene amino)anthracene-9,10-dione has been synthesized and explored as ionophore for preparing PVC-based membrane sensors selective to the copper (Cu2+) ion. Potentiometric investigations indicate high affinity of these receptors for copper ion. The best performance was shown by the membrane of composition (w/w) of ionophore: 1 mg, PVC: 33 mg, DOP: 66 mg and KTpClPB as additive were added 50 mol % relative to the ionophore in 1 ml THF. The proposed sensor’s detection limit is 2.8×10?7 M over pH 5 at room temperature (Nernstian slope 31.76 mV/dec.) with a response time of 15 seconds and showed good selectivity to copper ion over a number of interfering cations.
Page
401 - 405
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