STRUCTURES OF VINYLIDENE FLUORIDE OLIGOMER THIN FILMS ON ALKALI HALIDE SUBSTRATE
STRUCTURES OF VINYLIDENE FLUORIDE OLIGOMER THIN FILMS ON ALKALI HALIDE SUBSTRATE
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DOI：
10.1063/1.371279
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发表时间：
1999-09
影响因子：
3.2
通讯作者：
K. Noda;K. Ishida;T. Horiuchi;K. Matsushige;A. Kubono
中科院分区：
文献类型：
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作者：
K. Noda;K. Ishida;T. Horiuchi;K. Matsushige;A. Kubono
利用能量色散掠射x射线衍射系统、傅里叶变换红外光谱和原子力显微镜（AFM）研究了不同衬底温度下新合成的具有大电偶极子的偏氟乙烯（VDF）低聚物的结构和晶体转变。据透露,分子外延生长,影响极大的力量水晶表面场的范德瓦耳斯或静电势,并发现II(α阶段)的相变形式形成我(β阶段)是诱导提高衬底的温度从50到80°C,伴随着交替在衬底上的晶体轴的轴形式二世的极地b轴形式我水晶。这一事实表明，在足够的热运动下，借助静电相互作用，VDF低聚物的分子链沿着K+或Cl - < 110 >行排列其c轴。此外，在……
Structures and crystal transformation of the newly synthesized vinylidene fluoride (VDF) oligomer with large electric dipoles evaporated on KCl (001) at various substrate temperatures have been investigated by an energy dispersive–grazing incidence x-ray diffraction system, Fourier transform infrared spectroscopy, and atomic force microscope (AFM). It was revealed that the molecules grow epitaxially and are influenced greatly by forces of the crystal surface field in terms of van der Waals or electrostatic potentials, and found that the phase transformation from form II (α phase) to form I (β phase) is induced by raising the temperature of the substrate from 50 to 80 °C, accompanying the alternation in the crystal axes on the substrate from the a axis of form II to the polar b axis of the form I crystal. This fact suggests that the molecular chain of VDF oligomers aligns their c axes along the 〈110〉 row of K+ or Cl− with the aid of electrostatic interaction under enough thermal movement. Moreover, in the ...