Abstract
A spirobenzopyran derivative (1′-hexadecy1-3′,3′-dimethy1-6-nitrospiro[2H-1-benzopyran-2,2′-indolinen]) was immobilized into poly(vinyl chloride) membrane in order to study the photo-response of the membrane potential. UV light irradiation induced membrane potential changes of more than 100 mV with a response time of ca. 1 min. The photoinduced potential changes were larger in the lower ionic concentration region. Photo-response was also observed when no concentration gradient of electrolyte between the two solutions existed; this was explained based on the formation of asymmetric membrane under UV light irradiation. Photo-response of the membrane potential was enhanced in the slightly acidic region, suggesting an important role of the protonated form of opened spirobenzopyran in determining the membrane potential.
Original language | English |
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Pages (from-to) | 683-689 |
Number of pages | 7 |
Journal | KOBUNSHI RONBUNSHU |
Volume | 43 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1986 |
Externally published | Yes |
Keywords
- Asymmetric Membrane
- Membrane Potential
- Photoirradiation
- Poly(vinyl chloride)
- Spirobenzopyran
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- Materials Science (miscellaneous)
- Environmental Science(all)
- Polymers and Plastics