| Chitosan is abundantly present in nature and its amount is only inferior tocellulose.But because its molecular has some functional groups that can formhydrogen-bonding, so intermolecular force is so strong that it is only solutabe of a fewspecial solvent, limiting the range of application of chitosan. Recent years, modificationcarried out onto chitosan is the hotspot in this field to extend its application. In the text,we use deoxycholic acid to modify chitosan, in order to improve its solutability. Thestructures and properties of the modified-chitosan was investigated by FT-IRspectroscopy, differential scanning alorimetry (DSC), polarizing optical microscopy(POM), and thermogravimetric analyses TGA.Recent years molecular architectures through self-assembly processes by specificmolecular interaction such as hydrogen-bonding, ionic, ionic-dipolar and charge transferinteractions have been to be a new strategy for building the molecular structures of liquidcrystals. Hydrogen bond is one of the most important means of interaction for theseprocesses due to its stability and directionality.Main-chain, side-chain and network supramolecular liquid crystalline have beenreported, espacially side-chain supramolecular liquid crystalline for it is new kinds ofmaterials with abroad, applied foreground. We have prepared two protondonors-3,5-bis(4-pyridine carboxylic acid) methylbenzene diester and p-hydroxyl azobenzoicacid.The structures and properties of the obtained liquid crystalline monomers andpolymers were investigated by FT-IR spectroscopy, differential scanning calorimetry(DSC), polarizing optical microscopy (POM), and thermogravimetric analyses TGA.
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