- 作者: 李遠剛,房喻,劉靜,王明珍
- 作者服務機構: School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, P. R. China
- 中文摘要: Cholesteryl glycinate anthraquinone-2-carboxylamide (CGAC), an electron acceptor, and cholesteryl glycinate 9,10-dimethyloxyl anthracene-2-carboxylamide (CGDAC), an electron donor, were synthesized and characterized via 1H NMR, IR and elemental analysis. Gelation studies demonstrated that acetic acid and some mixed solvents containing more than 30% acetic acid could be efficiently gelled by CGAC. Unlike CGAC, CGDAC could not gel any of the solvents tested. SEM and AFM studies showed that the gelator in the gel system of CGAC-acetic acid self-assembled into a fiber-like tubular structure, and the tubules were further self-tangled into networks. Introduction of CGDAC into the CGAC-acetic acid system had little effect upon the gel properties of the CGAC-acetic acid system. This observation was explained by considering interruption of the possible donor-acceptor interaction between CGAC and CGDAC due to protonation of the latter. Comparing the structure and gelation properties of CGAC with those of similar structures reported in the literature further indicates that a small change in the structure of the linker between the A (aromatic) part and S (steroidal) part of the ALS type gelators affects the gelation behaviors of the ALS type gelators significantly.
- 英文摘要: --
- 中文關鍵字: Gelator; Organogel; Derivatives of cholesterol; Supramolecular structure; Amino acid.
- 英文關鍵字: --