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Citation: Wu Li-Xin, Tian Yong-Chi, Liang Ying-Qiu. pH Dependence of the Aggregation of a Bilayer Membrane Containing Schiff Base Moiety[J]. Acta Physico-Chimica Sinica, ;1992, 8(03): 304-306. doi: 10.3866/PKU.WHXB19920305 shu

pH Dependence of the Aggregation of a Bilayer Membrane Containing Schiff Base Moiety

1.
Institute of Theoretical Chemistry, Jilin University, Changchun 130023; Department of Chemistry, Nanjing University, Nanjing 210008

Received Date: 25 January 1992
Available Online: 15 June 1992

The pH dependence of ultraviolet absorption spectra of an aqueous bilayer membrane composed of single-chain ammonium amphiphile containing a Schiff base, has been studied at 10 and 35 ℃, which are below and above the liquid crystalline to gel phase transition (T_c=32 ℃) of the neutral solution, respectively. At 10 ℃, increasing acidity of the solution facilitates the formation of H-aggregate. At 10 ℃, the H-aggregate increases with the decrease of pH value in the range of pH 13.0-10.0. Further increase of acididy leads to the protonation of the Schiff base and thus partially disintegrates the aggregate.
- Schiff base; Synthetic bilayer membrane; Aggregation; Electronic spectra
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