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首页> 外文期刊>Chemistry: A European journal >Comprehensive Understanding of Structure-Controlling Factors of a Zinc Tetraphenylporphyrin Thin Film Using pMAIRS and GIXD Techniques
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Comprehensive Understanding of Structure-Controlling Factors of a Zinc Tetraphenylporphyrin Thin Film Using pMAIRS and GIXD Techniques

机译：使用pMAIRS和GIXD技术全面了解四苯基卟啉锌薄膜的结构控制因素

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摘要

The performance of an organic electronic device is significantly influenced by the anisotropic molecular structure in the film, which has long been difficult to predict especially for a solution process. In the present study, a zinc tetraphenylporphyrin (ZnTPP) thin film prepared by a solution process was chosen to comprehensively explore the molecular-arrangement mechanism as a function of representative film-preparation parameters: solvent, film-preparation technique, and thermal annealing. The anisotropic structure was first analyzed by using a combination of infrared p-polarized multiple-angle incidence resolution spectrometry (pMAIRS) and grazing incidence X-ray diffraction (GIXD), which readily revealed the molecular orientation and crystal structure, respectively. As a result, the real dominant factor was found to be the evaporation time of the solvent that determines the initial two different molecular arrangements, types-I and -II, while the thermal annealing was found to play an additional role of improving the molecular order. The correlation between the molecular orientation and the crystal structure was also revealed through the individual orientation analysis of the porphyrin and phenyl rings.
机译：有机电子器件的性能受薄膜中各向异性分子结构的影响很大，长期以来很难预测，特别是对于溶液处理而言。在本研究中，选择通过溶液法制备的四苯基卟啉锌薄膜（ZnTPP），以全面探讨分子排列机理与代表性膜制备参数的关系：溶剂，膜制备技术和热退火。首先通过结合红外p极化多角度入射分辨谱仪（pMAIRS）和掠入射X射线衍射仪（GIXD）来分析各向异性结构，这可以轻松地揭示分子取向和晶体结构。结果，发现真正的主要因素是溶剂的蒸发时间，该溶剂决定了最初的两种不同的分子排列（I型和-II型），而热退火还发现了改善分子序的其他作用。 。通过对卟啉和苯环的单独取向分析，还揭示了分子取向与晶体结构之间的相关性。

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