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首页> 美国卫生研究院文献>Molecules >Fe(II) Spin Crossover/Polymer Hybrid Materials: Investigation of the SCO Behavior via Temperature-Dependent Raman Spectroscopy Physicochemical Characterization and Migration Release Study
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Fe(II) Spin Crossover/Polymer Hybrid Materials: Investigation of the SCO Behavior via Temperature-Dependent Raman Spectroscopy Physicochemical Characterization and Migration Release Study

机译：Fe（ii）旋转交叉/聚合物混合材料：通过温度依赖拉曼光谱物理化学表征和迁移释放研究来研究SCO行为

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摘要

Polymeric composites constitute an appealing class of materials with applications in various fields. Spin crossover (SCO) coordination complexes are switchable materials with potential use in data storage and sensors. Their incorporation into polymers can be considered an effective method for their wider practical application. In this study, Fe(II) SCO/polylactic acid hybrid polymeric composites have been prepared by film casting. The mononuclear coordination complex [Fe{N(CN)2}2(abpt)2] was incorporated into polylactic acid. The morphological, structural and thermoanalytical characterization of the composite films were performed via scanning electron microscopy (SEM), attenuated total reflectance (ATR/FTIR), Raman spectroscopy and differential scanning calorimetry (DSC). In addition, the migration release study (MRS) of the SCO compound from the polymeric matrix into the food simulant 50% v/v water/ethanol solution was also examined via UV/Vis absorption. Of particular interest was the investigation of the SCO behavior of the coordination complex after its incorporation into the polymer matrix; it was accomplished by temperature-dependent micro-Raman spectroscopy. The described attempt could be considered a preparatory step toward the development of SCO-based temperature sensors integrated into food packaging materials.
机译：聚合物复合材料构成了具有各种领域的应用的吸引人的材料。旋转交叉（SCO）协调复合物是具有在数据存储和传感器中潜在使用的可切换材料。它们的掺入聚合物可以被认为是它们更广泛的实际应用的有效方法。在该研究中，通过薄膜浇铸制备Fe（II）SCO /聚乳酸杂化聚合物复合材料。将单核协调复合物[Fe {N（CN）2} 2（ABPT）2]掺入聚乳酸中。通过扫描电子显微镜（SEM）进行复合膜的形态，结构和热分析表征，减弱总反射率（ATR / FTIR），拉曼光谱和差示扫描量热法（DSC）。此外，还通过UV / Vis吸收检查来自聚合物基质到食品模拟物中的SCO化合物的迁移释放研究（MRS）50％v / v水/乙醇溶液。特别令人兴趣的是调查其在聚合物基质中掺入聚合物基质后的协调复合物的SCO行为;它是通过依赖于温度依赖的微拉曼光谱完成的。所描述的尝试可以被认为是朝着集成到食品包装材料中的基于SCO的温度传感器的准备步骤。

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