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Author(s): |
Si Chen, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China
Guo-dong Tang, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China
Jian-ming Xu, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China
Jing-kai Yan, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China
Xu Wang, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, China |
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Abstract: |
The first G1-C12-G1 and second G2-C12-G2 generation dendritic gelators were synthesized by divergent method, using dodecane diamine as the central core, BOC-lysine branching monomer as branch structure which connected to the 1,12-diaminododecane via covalent peptide bond linkages. The structures were confirmed by 1H-NMR and MS. Tube inversion experiments showed that the self-assembly of the G2-C12-G2 in the methyl methacrylate (MMA) formed a more stable gel than G1-C12-G1. G2-C12-G2 could form a stable gel at a low concentration (0.2 wt%) , and the gel-sol temperature (Tgel) was 26 ℃. However G1-C12-G1 could not form an effective gel in MMA until the concentration up to 4 wt% and Tgel = 16 ℃. Electron microscopy and scanning electron microscopy（SEM）experiments revealed gel network was constituted by micelle, which was made up of numerous fibers. And the fibers become denser and larger with the increasing G2-C12-G2 content.
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