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Citation: ZHANG Qiu-Hong, LIU Kai-Qiang, LIU Jing, XUE Min, PENG Jun-Xia, FANG Yu. Synthesis and Gelation Behavior of Pyridine-Containing Cholesterol-Based Low Molecular Mass Organic Gelators[J]. Chinese Journal of Applied Chemistry, ;2008, 25(9): 1001-1006. shu

Synthesis and Gelation Behavior of Pyridine-Containing Cholesterol-Based Low Molecular Mass Organic Gelators

1.
Key Laboratory of Applied Surface Science and Colloid Chemistry, MOE, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062

Corresponding author: FANG Yu,
Received Date: 13 October 2007
Available Online: 28 March 2008
Fund Project: 国家自然科学基金资助项目(20773083) (20773083)教育部资助课题(20040718001) (20040718001)

New cholesterol-based low molecular mass organic gelators bearing a 2-,3-,or 4-pyridyl unit,which are denoted as 1,2,and 3,respectively,have been synthesized,and their corresponding salts(1',2',3') have also been prepared by simply protonating them with HCl.It is revealed that both the gelation behavior of the gelators and the micro-structures of the xerogels strongly depend on the relative position of N atom in the pyridyl unit and the protonation state of the pyridyl unit.FT-IR and ¹H NMR studies demonstrate clearly that hydrogen bonding between the amide groups of the gelators play an important role in the formation of the organogels.XRD studies show that the primary assembly of compund 1 in benzene is similar to that of compund 1' in the same solvent,and furthermore is also similar to that of compund 1 in solid state.The repeat units of the three aggregates are almost the same,and are very close to the size of molecule 1.
- low molecular mass organic gelators,
- gel,
- pyridine,
- cholesterol
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