Progress in Fluorene-based Wide-bandgap Steric Semiconductor

发布时间：2018-04-03 16:59

本文选题：Organics　切入点：Steric　出处：《Chinese Journal of Polymer Science》2017年02期

【摘要】：Molecular bulks are favorable for the thermal and morphological stability in organic wide-bandgap semiconducting polymers with potential applications in both information and energy electronics. In this review, we present our progress in the design of fluorene-based bulky semiconductors with a fractal four-element pattern. Firstly, we established one-pot methods to spirofluorenes, especially spiro[fluorene-9,9′-xanthene](SFX) serving as the next-generation spiro-based semiconductors. Secondly, we observed the supramolecular forces at the bulky groups and discovered the supramolecular steric hindrance(SSH) effect on polymorphisms, nanocrystals as well as device performance. Thus, a synergistically molecular attractor-repulsor theory(SMART) was proposed for the control of nanocrystal morphology, thin film phase and morphology. Thirdly, the third possible type of defects has been identified to generate green band(g-band) emission in widebandgap semiconductors by the introduction of molecular strain design of cyclofluorene. Finally, the first bulky polydiarylfluorene with highly crystalline and β conformation was achieved by an attractor-repulsor design of tadpole-shape monomer, which offered an effective platform to fabricate stable wide-bandgap semiconducting devices. All the discoveries offer the solid basis to break through bottlenecks of organic/polymer wide-bandgap semiconductors by the improvements of overall performances.
[Abstract]:Molecular bulks are favorable for the thermal and morphological stability in organic wide-bandgap semiconducting polymers with potential applications in both information and energy electronics.In this review, we present our progress in the design of fluorene-based bulky semiconductors with a fractal four-element pattern.First, we established one-pot methods to spirofluorenes, especially spiro [fluorene-9] -xanthene] serving as the next-generation spiro-based semiconductors.We observed the supramolecular forces at the bulky groups and discovered the supramolecular steric effect on polymorphism, nanocrystals as well as device performance.Was proposed for the control of nanocrystal morphology.The thin film phase and morphology.The third possible type of defects has been identified to generate green band-band emission in widebandgap semiconductors by the introduction of molecular strain design of cyclofluorene.The first bulky polydiarylfluorene with highly crystalline and 尾 conformation was achieved by an attractor-repulsor design of tadpole-shape monomer.#en14# offered an effective platform to fabricate stable wide-bandgap wide-bandgap semiconducting devices.All the discoveries offer the solid basis to break through bottlenecks of organic/polymer wide-bandgap semiconductors by the improvements of overall performances.
【作者单位】： Center
【基金】：financially supported by the National Natural Science Funds for Excellent Young Scholar(No.21322402) the National Natural Science Foundation of China(Nos.21274064,61475074,21504041 and 61136003) University of Jiangsu Province Natural Science Foundation Project(No.14KJB510027) Natural Science Foundation of Jiangsu Province(No.BM2012010) Excellent Science and Technology Innovation Team of Jiangsu Higher Education Institutions,Synergetic Innovation Center for Organic Electronics and Information Displays,Natural Science of the Education Committee of Jiangsu Province(No.15KJB430019) Jiangsu Planned Projects for Postdoctoral Research Funds(No.1501019B)
【分类号】：TN304

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