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The characteristic of monolayer of 2 - octadecylcarbamoyl- 8- hydroxyquinoline(HL ) on subphases with differentp H values has been investigated. HL can form stable monolayerson neutral and alkaline subphases,while on acidic subphases,the monolayers are unstable and tend to expand,and the condensed zone wasdecreased with the decreasing of p H values. The association- dissociation balance of 8- hydroxyquinoline head group in the air/ water interface was also discussed.
The characteristic of monolayer of 2-octadecylcarbamoyl-8-hydroxyquinoline (HL) on subphases with different pH values has been investigated. HL can form stable monolayerson neutral and alkaline subphases, while on acidic subphases, the monolayers are unstable and tend to expand, and the condensed zone wasdecreased with the decreasing of p H values. The association- dissociation balance of 8-hydroxyquinoline head group in the air / water interface was also discussed.