J-aggregate formation of amphiphilic merocyanine in Langmuir–Blodgett films
J-aggregate formation of amphiphilic merocyanine in Langmuir–Blodgett films
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Langmuir-Blodgett 薄膜中两亲部花青的 J 聚集体形成
DOI：
10.1016/s0022-2313(99)00416-0
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发表时间：
2000
影响因子：
3.6
通讯作者：
M. Matsumoto
中科院分区：
文献类型：
--
作者：
H. Tachibana;Yasushi Yamanaka;H. Sakai;M. Abe;M. Matsumoto
使用Langmuir-Blodgett技术将单层两亲性螺吡喃转移到固体基质上。在LB膜中观察到两种类型的圆形畴：直径为3-4μm的较大畴和直径为1μm的较小畴。形貌的变化取决于铺展溶液的浓度，亚相温度和铺展溶剂。在用紫外光照射时，螺吡喃光异构化为mercury，随后形成mercury的J-聚集体。在大畴的顶部形成花状三维结构，并伴随着J聚集体的形成。这些结构一直发展到受影响区域中的大部分分子被转运到这些结构中。
A single monolayer of amphiphilic spiropyran was transferred on solid substrates using the Langmuir–Blodgett technique. Two types of circular domains were observed in the LB films: the larger domains with a diameter of 3–4μm and the smaller ones with a diameter of 1μm. The morphology changed depending on the concentration of the spreading solution, the subphase temperature and the spreading solvent. On irradiation with UV light, the spiropyran photoisomerized to merocyanine, followed by the J-aggregate formation of the merocyanine. Flower-like three-dimensional structures formed on the top of the larger domains accompanied by the J-aggregate formation. These structures developed until most of the molecules in the affected domains were transported to the structures.