Supramolecular organization of subphthalocyanines in Langmuir and Langmuir-Blodgett films
Supramolecular organization of subphthalocyanines in Langmuir and Langmuir-Blodgett films
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Langmuir 和 Langmuir-Blodgett 薄膜中亚酞菁的超分子组织
DOI：
10.1039/a901986c
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发表时间：
1999
影响因子：
--
通讯作者：
F. Agullo
中科院分区：
文献类型：
--
作者：
M. Martínez‐Díaz;Belén del Rey;T. Torres;B. Agricole;C. Mingotaud;N. Cuvillier;G. Rojo;F. Agullo
对一系列亚酞菁（SubPc）大环化合物1-3、5和6的界面进行了研究，这些化合物在大环化合物的外围（用极性基团和供体基团）或轴向位置（用氯原子或三己基甲硅烷氧基）被不同取代.已观察到的显着变化，在空气/水界面处的大环的取向通过改变极性基团的数量在外围或添加一个庞大的组在轴向位置。用布鲁斯特角显微镜观察了单分子膜的形貌。由化合物1-3制成的单层可以有效地转移到疏水基底上。通过紫外-可见光谱、红外光谱、X射线衍射和椭圆偏振光谱对SubPc 1的LB膜进行了表征。这些研究表明，SubPc 1的LB膜确实是Y型的，由明确定义的平均厚度约为1.5 μ m的层形成。16章对这些材料的非线性光学性质进行了初步的研究。特别是，二次谐波产生（SHG）的实验已进行LB膜的SubPc 1。
Interfacial studies of a series of subphthalocyanine (SubPc) macrocycles 1-3, 5 and 6, differently substituted either in the periphery (with polar and donor groups) or in the axial position of the macrocycle (with a chlorine atom or a trihexylsiloxy group), have been carried out. Remarkable changes in the orientation of the macrocycles at the air/water interface have been observed by varying the number of polar groups in the periphery or adding a bulky group in the axial position. The morphology of the monolayers has been carefully studied by Brewster angle microscopy. Monolayers made of compounds 1-3 could be efficiently transferred onto hydrophobic substrates. LB films of SubPc 1 were characterized in detail by UV-VIS and IR spectroscopies, and X-ray diffraction and ellipsometry experiments. These studies indicate that the LB films of SubPc 1 are surely Y-type, formed by layers of a well-defined average thickness of ca. 16 A. Preliminary studies on the nonlinear optical (NLO) properties of these materials have been carried out. In particular, second harmonic generation (SHG) experiments have been performed on LB films of SubPc 1.