Abstract
Electrical response characteristics of two kinds of membrane were studied; one membrane is composed of poly vinyl chloride (PVC) with dioctyl phenylphosphonate (DOPP) as a plasticizer, and the other is a membrane used as the transducer part of a multichannel taste sensor, which contains PVC, DOPP and a negatively charged lipid. These two membranes exhibited unusual behavior, namely, that the membrane electric potentials did not become saturated with increasing NaCl concentration. The electric potential tends to saturate in conventional polymer membranes. The PVC/DOPP membrane was found to respond to NaCl more sensitively than the lipid/PVC/DOPP membrane. Good quantitative agreement with the observed data was obtained using a theory in which the surface electric potential and the diffusion potential within the membrane are both taken into account. It was shown that the lipid/PVC/DOPP membrane changes from the weakly charged state to the fully charged state by dissociation of H+ from the lipid with increasing NaCl concentration.
| Original language | English |
|---|---|
| Pages (from-to) | 57-68 |
| Number of pages | 12 |
| Journal | Sensors and Materials |
| Volume | 9 |
| Issue number | 1 |
| Publication status | Published - 1997 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Instrumentation
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Electrical characteristics of lipid/PVC/DOPP membrane and PVC/DOPP membrane used as transducers in chemical sensors. / Oohira, Koji; Toko, Kiyoshi.
In: Sensors and Materials, Vol. 9, No. 1, 1997, p. 57-68.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrical characteristics of lipid/PVC/DOPP membrane and PVC/DOPP membrane used as transducers in chemical sensors
AU - Oohira, Koji
AU - Toko, Kiyoshi
PY - 1997
Y1 - 1997
N2 - Electrical response characteristics of two kinds of membrane were studied; one membrane is composed of poly vinyl chloride (PVC) with dioctyl phenylphosphonate (DOPP) as a plasticizer, and the other is a membrane used as the transducer part of a multichannel taste sensor, which contains PVC, DOPP and a negatively charged lipid. These two membranes exhibited unusual behavior, namely, that the membrane electric potentials did not become saturated with increasing NaCl concentration. The electric potential tends to saturate in conventional polymer membranes. The PVC/DOPP membrane was found to respond to NaCl more sensitively than the lipid/PVC/DOPP membrane. Good quantitative agreement with the observed data was obtained using a theory in which the surface electric potential and the diffusion potential within the membrane are both taken into account. It was shown that the lipid/PVC/DOPP membrane changes from the weakly charged state to the fully charged state by dissociation of H+ from the lipid with increasing NaCl concentration.
AB - Electrical response characteristics of two kinds of membrane were studied; one membrane is composed of poly vinyl chloride (PVC) with dioctyl phenylphosphonate (DOPP) as a plasticizer, and the other is a membrane used as the transducer part of a multichannel taste sensor, which contains PVC, DOPP and a negatively charged lipid. These two membranes exhibited unusual behavior, namely, that the membrane electric potentials did not become saturated with increasing NaCl concentration. The electric potential tends to saturate in conventional polymer membranes. The PVC/DOPP membrane was found to respond to NaCl more sensitively than the lipid/PVC/DOPP membrane. Good quantitative agreement with the observed data was obtained using a theory in which the surface electric potential and the diffusion potential within the membrane are both taken into account. It was shown that the lipid/PVC/DOPP membrane changes from the weakly charged state to the fully charged state by dissociation of H+ from the lipid with increasing NaCl concentration.
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UR - http://www.scopus.com/inward/citedby.url?scp=0031535053&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031535053
VL - 9
SP - 57
EP - 68
JO - Sensors and Materials
JF - Sensors and Materials
SN - 0914-4935
IS - 1
ER -