Structure Control of Synthetic Bilayer Membranes from Single-Chain Amphiphiles Containing the Schiff Base Segment. III. Proton NMR Study

✍ Scribed by Zhiqiang Zhang; Lixin Wu; Yingqiu Liang; Qi Yin

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 128 KB
• Volume: 188
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.4786

✦ Synopsis

The molecular motion in the synthetic bilayer membranes formed from a series of single-chain ammonium amphiphiles with The synthetic routes of the 15 C n SBC m N / amphiphiles and their elemena rigid Schiff base segment, the diphenylazomethine chromophore, tary analysis were reported by Liang et al. (10), together with the aggregate morphologies and thermal phase transitions of the membrane-forming am-has been investigated via the use of 1 H NMR spectroscopy. The phiphiles, observed by electron microscopy and DSC techniques, respecchanges in chemical shift of the azomethine protons suggest the tively. effect of conformation and aggregation variation during the bi-Samples were dissolved in either deuterium oxide (D 2 O) or dimethyl layer formation process, which confirms the concept of conformasulfoxide-d 6 (DMSO-d 6 ) to make 10 mM solutions. The D 2 O solutions tion control of the supramolecular systems containing a nonplanar were sonicated at 10ЊC for 20 min (Branson B-19, Japan), and then kept chromophore.