论文部分内容阅读
Cholesterol modified dextran (CHD) having self-aggregation or self-assembly property was synthesized from cholesterol and 1,6-hexyldiisocyanate. The degree of substitution of cholesteryl moiety in dextran main line is 3-5 cholesterols the 100 glucose units. We have prepared water solution of CHD using probe type sonifier and N-Phenyl-α-naphthylamine (PNA) as a fluorescent probe to study CHD self-aggregate process .For each solution of two samples, we found that the maximum emission of PNA in CHD solution was shifted to the lower wavelength and the intensity drastically increased above a critical CHD concentration. This change corresponds to the formation of micelle-like clusters self-aggregated by the cholesterol moiety once the CHD concentration exceeds 0.01 mg/ml.
Cholesterol modified dextran (CHD) having self-aggregation or self-assembly property was synthesized from cholesterol and 1,6-hexyldiisocyanate. The degree of substitution of cholesteryl moiety in dextran main line is 3-5 cholesterols the 100 glucose units. We have prepared water solution of CHD using probe type sonifier and N-Phenyl-α-naphthylamine (PNA) as a fluorescent probe to study CHD self-aggregate process. For each solution of two samples, we found that the maximum emission of PNA in CHD solution was shifted to the lower wavelength and the intensity drastically increased above a critical CHD concentration. This change corresponds to the formation of micelle-like clusters self-aggregated by the cholesterol moiety once the CHD concentration exceeds 0.01 mg / ml.