Photo-induced fabrication of surface relief gratings in alternate self-assembled films containing azo dye and alignments of LC molecules
Photo-induced fabrication of surface relief gratings in alternate self-assembled films containing azo dye and alignments of LC molecules
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含有偶氮染料的交替自组装薄膜的表面浮雕光栅的光诱导制造和液晶分子的排列
DOI：
10.1016/s0927-7757(01)01005-6
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
R. Advíncula
中科院分区：
文献类型：
--
作者：
F. Kaneko;Takashi Kato;A. Baba;K. Shinbo;K. Kato;R. Advíncula
制备了含偶氮苯染料的交替叠层自组装膜的光致表面浮雕光栅。在混合液晶盒结构中，研究了这些薄膜上的双折射液晶分子的取向特性。采用交替层-层自组装方法制备了聚二烯丙基二甲基氯化铵（PDADMAC）和直接红80（DR 80，偶氮染料）。PDADMAC/DR 80薄膜的光栅是通过曝光在488 nm的Ar+激光干涉图案。利用原子力显微镜观察了薄膜上光栅的形成。此外，液晶分子，5CB，在薄膜上的取向特性进行了研究，通过监测的双折射的变化的液晶盒在原位。在用激光曝光30分钟后观察到这种面内对准，同时形成干涉图案。
Photo-induced surface relief gratings of alternate layer-by-layer self-assembled films containing azobenzene dyes were fabricated. The alignment properties of nematic liquid crystal (LC) molecules on these films were investigated in a hybrid LC cell configuration. Poly(diallyldimethylammonium chloride) (PDADMAC) and Direct Red 80 (DR80, azobenzene dye) were deposited using the alternate layer-by-layer self-assembly method. The gratings of the PDADMAC/DR80 films were fabricated by exposure to interference patterns of Ar+laser light at 488 nm. The formation of the gratings on the films was observed using atomic force microscopy. Furthermore, the alignment properties of LC molecules, 5CB, on the films were investigated by monitoring the change in birefringence of the LC cell in situ. This in-plane alignment was observed after ∼30 min exposure with the laser, simultaneous with the formation of the interference patterns.
影响因子：
64.8
作者：
GIBBONS, WM;SHANNON, PJ;SWETLIN, BJ
通讯作者：
SWETLIN, BJ