用于包封不带电荷有机染料的聚电解质稳定表面活性剂胶束的逐层组装多层膜。
Layer-by-layer-assembled multilayer films of polyelectrolyte-stabilized surfactant micelles for the incorporation of noncharged organic dyes.
作者信息
Liu Xiaokong, Zhou Lu, Geng Wei, Sun Junqi
机构信息
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, China.
出版信息
Langmuir. 2008 Nov 18;24(22):12986-9. doi: 10.1021/la802674h. Epub 2008 Oct 18.
Noncharged pyrene molecules were incorporated into multilayer films by first loading pyrene into poly(acrylic acid) (PAA)-stabilized cetyltrimethylammonium bromide (CTAB) micelles (noted as PAA&(Py@CTAB)) and then layer-by-layer (LbL) assembled with poly(diallyldimethylammonium chloride) (PDDA). The stable incorporation of pyrene into multilayer films was confirmed by quartz crystal microbalance (QCM) measurements and UV-vis absorption spectroscopy. The resultant PAA&(Py@CTAB)/PDDA multilayer films show an exponential growth behavior because of the increased surface roughness with increasing number of film deposition cycles. The present study will open a general and cost-effective avenue for the incorporation of noncharged species, such as organic molecules, nanoparticles, and so forth, into LbL-assembled multilayer films by using polyelectrolyte-stabilized surfactant micelles as carriers.
首先将芘负载到由聚丙烯酸（PAA）稳定的十六烷基三甲基溴化铵（CTAB）胶束中（记为PAA&(Py@CTAB)），然后与聚二烯丙基二甲基氯化铵（PDDA）进行逐层（LbL）组装，从而将不带电荷的芘分子引入多层膜中。通过石英晶体微天平（QCM）测量和紫外可见吸收光谱证实了芘在多层膜中的稳定掺入。由于随着膜沉积循环次数的增加表面粗糙度增大，所得的PAA&(Py@CTAB)/PDDA多层膜呈现指数生长行为。本研究将为通过使用聚电解质稳定的表面活性剂胶束作为载体，将不带电荷的物质（如有机分子、纳米颗粒等）掺入LbL组装的多层膜中开辟一条通用且经济高效的途径。
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