Association of Fluorocarbon and Hydrocarbon End-Capped Poly(ethylene glycol)s: NMR and Fluorescence Studies
Association of Fluorocarbon and Hydrocarbon End-Capped Poly(ethylene glycol)s: NMR and Fluorescence Studies
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氟碳化合物和碳氢化合物封端聚乙二醇的缔合：NMR 和荧光研究
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Yun
中科院分区：
文献类型：
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作者：
Jicang Zhou;Dongqing Zhuang;Xiaofeng Yuan;†. A. Ming Jiang;Yun
合成了以聚乙二醇为基的氟碳和碳氢疏水缔合聚合物（F-PEG和H-PEG）。用核磁共振和荧光探针技术研究了它们在水溶液中的缔合行为。NMR结果表明，除了疏水基，连接疏水基和PEG链的氨基甲酸酯键也被并入疏水核中。因此，由氟碳链和氨基甲酸酯键组成的F-PEG胶束具有双重H/F特征，而H-PEG胶束则存在纯H特征。三种类型的荧光探针，即芘，9-（蒽基甲氧基甲基）芘（AMOP），和1-（全氟辛酰基）芘（PyCORf），已被用来监测协会，重点是比较他们的探测能力不同的微区。对于H-PEG，芘和AMOP都能有效地监测缔合和测定临界聚集浓度（CAC）。此外，Amop还提供了有关微视...
Poly(ethylene glycol)-based associating polymers with fluorocarbon and hydrocarbon hydrophobes (F-PEG & H-PEG) were synthesized. Their association behavior in aqueous solutions was investigated by NMR and a fluorescent probe technique. NMR results demonstrate that besides the hydrophobe, the urethane linkage connecting the hydrophobe and PEG chain is incorporated into the hydrophobic core as well. Thus, the F-PEG micelles consisting of both the fluorocarbon chain and urethane linkage possess a dual H/F character, whereas a pure H one exists for H-PEG micelles. Three types of fluorescent probes, that is, pyrene, 9-(anthrylmethyloxymethyl)pyrene (AMOP), and 1-(perfluorooctanoyl)pyrene (PyCORf), have been used to monitor the association, with emphasis on comparing their probing abilities for different microdomains. As for H-PEG, both pyrene and AMOP are effective in monitoring the association and measuring the critical aggregation concentration (CAC). In addition, AMOP presents information about the microvis...