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首页> 外文OA文献 >Zinc Phthalocyanine−Graphene Hybrid Material for Energy Conversion: Synthesis, Characterization, Photophysics and Photoelectrochemical Cell Preparation
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Zinc Phthalocyanine−Graphene Hybrid Material for Energy Conversion: Synthesis, Characterization, Photophysics and Photoelectrochemical Cell Preparation

机译：锌酞菁 - 用于能量转换的石墨烯杂化材料：合成，表征，光物理和光电化学电池制备

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Graphene exfoliation upon tip sonication in o-­‐DCB was accomplished. Then, covalent grafting of (2-­‐ aminoethoxy)(tri-­‐tert-­‐butyl) zinc phthalocyanine (ZnPc), to exfoliated graphene sheets was achieved. The newly formed ZnPc-­‐graphene hybrid material was found soluble in common organic solvents without any precipitation for several weeks. Application of diverse spectroscopic techniques verified the successful formation of ZnPc-­‐graphene hybrid materi-­‐ al, while thermogravimetric analysis revealed the amount of ZnPc loading onto graphene. Microscopy analysis based on AFM and TEM was applied to probe the morphological characteristics and to investigate the exfoliation of graphene sheets. Efficient fluorescence quenching of ZnPc in the ZnPc-­‐graphene hybrid material suggested that photoinduced events occur from the photoexcited ZnPc to exfoliated graphene. The dynamics of the photoinduced electron transfer wasevaluated by femtosecond transient absorption spectroscopy, thus, revealing the formation of transient species such as ZnPc+ yielding the charge-­‐separated state ZnPc•+–graphene•–. Finally, the ZnPc-­‐graphene hybrid material was integrated into a photoactive electrode of an optical transparent electrode (OTE) cast with nanostructured SnO2 films (OTE/SnO2), which exhibited sta le and reproducible photocurrent responses and the incident photon-­‐to-­‐current conversion efficien-­‐ cy was determined
机译：在o -­- DCB中进行尖端超声处理后，石墨烯脱落。然后，实现了（2-β-氨基乙氧基）（三-叔-叔-丁基）锌酞菁（ZnPc）的共价接枝到脱落的石墨烯片上。发现新形成的ZnPc-γ-石墨烯杂化材料可溶于常见的有机溶剂中数周，没有任何沉淀。多种光谱技术的应用验证了ZnPc -­-石墨烯杂化材料的成功形成，而热重分析表明ZnPc负载在石墨烯上的量。基于原子力显微镜和透射电镜的显微镜分析被用来探测形态特征和研究石墨烯片的剥离。 ZnPc-α-石墨烯杂化材料中ZnPc的高效荧光猝灭表明，光诱导事件发生于从光激发的ZnPc到剥落的石墨烯。飞秒瞬态吸收光谱法评估了光诱导电子转移的动力学，从而揭示了诸如ZnPc+之类的瞬态物质的形成，从而产生了电荷-­-分离态ZnPc•+-石墨烯•。最后，将ZnPc-石墨烯杂化材料集成到由纳米结构SnO2薄膜（OTE / SnO2）铸成的光学透明电极（OTE）的光敏电极中，该薄膜表现出稳定的和可再现的光电流响应以及入射的光子对确定了当前的转换效率

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