Vacuum-Deposited Thin Film of Linear π-Conjugated Poly(arylene)s. Optical, Electrochemical, and Electrical Properties and Molecular Alignment
Vacuum-Deposited Thin Film of Linear π-Conjugated Poly(arylene)s. Optical, Electrochemical, and Electrical Properties and Molecular Alignment
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线性 π-共轭聚（亚芳基）的真空沉积薄膜的光学、电化学和电学特性以及分子排列。
DOI：
10.1021/jp960724q
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
S. Sasaki
中科院分区：
文献类型：
--
作者：
Takakazu Yamamoto;T. Kanbara;C. Mori;H. Wakayama;T. Fukuda;Tetsushi Inoue;S. Sasaki
真空沉积线性棒状π共轭聚（亚芳基）[聚（对亚苯基）PPP、聚（噻吩-2，5-二基）PTh和聚（2，2 '-联吡啶-5，5'-二基）PBpy]在各种基底上得到聚（亚芳基）薄膜。薄膜的红外光谱与原聚合物的红外光谱基本相同。薄膜的紫外可见光和光致发光光谱也显示出与原始聚合物所观察到的峰接近的峰。真空沉积的（vd-）PPP分子直立在碳和金属基板上显示与PPP薄膜观察到的规则的电子衍射斑点。PPP薄膜的结晶度取决于衬底的种类，并且按照Au < Ag < Cu < Al < C的顺序增加，这通过PPP与衬底之间的相互作用的强度来阐明。用vd-PTh和-PBpy观察到类似的取向。除了常规的电子衍射图案，在vd-PPP和-PTh薄膜上还可以观察到德拜-谢勒环，所有的电子衍射数据都是由电子衍射数据组成的。
Vacuum deposition of linear rod-like π-conjugated poly(arylene)s [poly(p-phenylene) PPP, poly(thiophene-2,5-diyl) PTh, and poly(2,2‘-bipyridine-5,5‘-diyl) PBpy] gives thin films of poly(arylene)s on various substrates. IR spectra of the films are essentially the same as those of original polymers. UV−visible and photoluminescence spectra of the films also show peaks near those observed with the original polymers. Vacuum deposited (vd-) PPP molecules stand upright on carbon and metal substrates as revealed by regular electron diffraction spots observed with the thin film of PPP. The degree of crystallinity of the PPP thin film depends on the kind of the substrate and increases in the order Au < Ag < Cu < Al < C, which is elucidated by the strength of interaction between PPP and the substrate. Similar orientation is observed with vd-PTh and -PBpy. In addition to the regular electron diffraction pattern, Debye−Scherrer rings are observable with the vd-PPP and -PTh films, and all the electron diffraction data...