Interaction between block copolymer micelles and azobenzene-containing surfactants from coassembly in water to layer-by-layer assembly at the interface

Interaction between block copolymer micelles and azobenzene-containing surfactants : from coassembly in water to layer-by-layer assembly at the interface

In this paper, we describe the use of block copolymer micelles to incorporate Azo-AOT, an azobenzene-containing amphiphile having a structure suitable for reverse micelle formation and the fabrication of polyelectrolyte/micelle multilayer films. Interestingly, it is found that the PS21-PAA157 micell...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 23(2007), 5 vom: 27. Feb., Seite 2874-8
1. Verfasser: Ma, Ning (VerfasserIn)
Weitere Verfasser: Wang, Yapei, Wang, Baoyu, Wang, Zhiqiang, Zhang, Xi, Wang, Guang, Zhao, Yue
Format: Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
Beschreibung
Zusammenfassung:In this paper, we describe the use of block copolymer micelles to incorporate Azo-AOT, an azobenzene-containing amphiphile having a structure suitable for reverse micelle formation and the fabrication of polyelectrolyte/micelle multilayer films. Interestingly, it is found that the PS21-PAA157 micelles can incorporate more Azo-AOT molecules than the PS115-PAA15 micelles, which is different from the case of incorporation of noncharged hydrophobic molecules. Moreover, Azo-AOT incorporated into the PS21-PAA157 micelles undergoes a faster photoisomerization than in the PS115-PAA15 micelles, which seems to be related to different aggregation states of Azo-AOT in the two micelles. From the data of UV-vis spectra, we can infer that Azo-AOT adopts a reverse micelle-like aggregation state in the PS115-PAA15 micelles and disperses in the interface between the core and corona of PS21-PAA157 micelles. These polyelectrolyte/micelle films incorporating functional amphiphiles have great potential in the field of functional thin films
Beschreibung:Date Completed 27.06.2007
Date Revised 20.02.2007
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1520-5827