TY - JOUR
T1 - Cesium-selective chemically modified field effect transistors with calix[4]arene-crown-6 derivatives
AU - Lugtenberg, R.J.W.
AU - Brzozka, Zbigniew
AU - Casnati, Alessandro
AU - Ungaro, Rocco
AU - Engbersen, Johannes F.J.
AU - Reinhoudt, David
PY - 1995
Y1 - 1995
N2 - Calix[4]arene-crown-6 derivatives (1–3) in the 1,3-alternate conformation, incorporated in poly(vinylchloride) membranes of CHEMFETs, exhibit good Cs+-selectivity and Nernstian behaviour. The Cs+-selectivity over Na+, i.e., log KpotCs,Na = −3.3, is slightly better than observed for bis(18-crown-6) derivatives (log KpotCs,Na = −3.0). The CHEMFETs respond sub-Nernstian in the presence of NH+4 and K+. Model calculations show that this can be explained by the small difference between the stability constants of the Cs+− and K+-complexes and by the high partition coefficient of NH+4 in favour of the membrane phase, respectively.
AB - Calix[4]arene-crown-6 derivatives (1–3) in the 1,3-alternate conformation, incorporated in poly(vinylchloride) membranes of CHEMFETs, exhibit good Cs+-selectivity and Nernstian behaviour. The Cs+-selectivity over Na+, i.e., log KpotCs,Na = −3.3, is slightly better than observed for bis(18-crown-6) derivatives (log KpotCs,Na = −3.0). The CHEMFETs respond sub-Nernstian in the presence of NH+4 and K+. Model calculations show that this can be explained by the small difference between the stability constants of the Cs+− and K+-complexes and by the high partition coefficient of NH+4 in favour of the membrane phase, respectively.
KW - METIS-106635
KW - IR-12382
U2 - 10.1016/0003-2670(95)00139-Q
DO - 10.1016/0003-2670(95)00139-Q
M3 - Article
VL - 310
SP - 263
EP - 267
JO - Analytica chimica acta
JF - Analytica chimica acta
SN - 0003-2670
IS - 310
ER -