Department of Materials Science and Technology, Tokyo University of Science, Yamazaki 2641, Noda 278-8510, Japan.
J Colloid Interface Sci. 2010 Mar 1;343(1):324-9. doi: 10.1016/j.jcis.2009.11.020. Epub 2009 Nov 16.
We report a useful technique for the deposition of dyes in the form of J-aggregates using directed self-assembly on the micro- and nanopatterned templates fabricated from the phase-separated mixed Langmuir-Blodgett (LB) films. The patterns of the mixed LB films can be tuned by adjusting the intermolecular interactions between the film-forming molecules. We used the mixed LB films containing silane coupling agent for the fabrication of micro- and nanopatterned templates, taking advantage of the difference between the surface free energy of the patterned regions and that of the self-assembled monolayers of the silane coupling agent. Atomic force microscopy showed that dyes were deposited by casting, spin-coating and the LB technique in accordance with the patterns of the original mixed LB films. Emission spectroscopy revealed that J-aggregates were formed in the patterned films. We succeeded in obtaining nanopatterns of a cyanine dye in the form of J-aggregates on the templates.
我们报告了一种在由相分离混合 Langmuir-Blodgett（LB）薄膜制成的微纳图案模板上通过定向自组装沉积染料形成 J-聚集体的有用技术。混合 LB 薄膜的图案可以通过调整成膜分子之间的分子间相互作用来调节。我们使用含有硅烷偶联剂的混合 LB 薄膜来制造微纳图案模板，利用图案区域的表面自由能与硅烷偶联剂的自组装单层之间的差异。原子力显微镜显示，染料通过浇铸、旋涂和 LB 技术根据原始混合 LB 薄膜的图案进行沉积。发射光谱显示，在图案化薄膜中形成了 J-聚集体。我们成功地在模板上获得了以 J-聚集体形式存在的花菁染料的纳米图案。
