芘从H_2O/DMF溶剂向两亲嵌段共聚物平头胶团增溶  

Pyrene Solubilization from H_2O/DMF Solvent Mixture to the "Crew-Cut" Micelles of Polystyrene-Polyacrylic Acid Diblock Copolymer

作　　者：赵剑曦[1] 戴闽光[1] 

机构地区：[1]福州大学化学系,福州350002

出　　处：《物理化学学报》1999年第6期488-494,共7页Acta Physico-Chimica Sinica

基　　金：福建省自然科学基金;国家教委留学回国人员启动基金;福建省高校科技资助

摘　　要：发展了从荧光发射谱计算芘（Py）增溶量的方法，以此研究Py从H2O／DMF混合溶剂向PS-b-PAA二嵌段共聚物平头胶团的增溶．实验结果表明，混合溶剂中水含量强烈影响Py的增溶，随水含量增加，Py增溶量增大．结合公式和分布系数，计算并讨论了Py的增溶等温线．A method of calculation of the amount of pyrene absorbed from the fluorescence emission spectrum has been developed. By this method the solubilization of pyrene from H2O/DMF solvent mixture to the crew-cut micelles of poly styrene-b-polyacryli c acid diblock copolymer has been investigated. The results showed that the solubilization of pyrene depends strongly upon water content in the solvent mixture. The amount 0f pyrene absorbed was enhanced with increasing the water content. The absorption isotherms were calculated and discussed by combination of the formula developed and the partition coefficient Kv. The theoretical treatment suggested an approach to calculate Kv directly from the intensity values measured experimentally.

关 键 词：两亲嵌段共聚物 平头胶团 芘 胶团 增溶量 

分 类 号：O648.15[理学—物理化学] O625.159[理学—化学]