Citation: Meng-na Yu, Chang-jin Ou, Bin Liu, Dong-qing Lin, Yu-yu Liu, Wei Xue, Zong-qiong Lin, Jin-yi Lin, Yan Qian, Sha-sha Wang, Hong-tao Cao, Lin-yi Bian, Ling-hai Xie, Wei Huang. Progress in Fluorene-based Wide-bandgap Steric Semiconductors[J]. Chinese Journal of Polymer Science, ;2017, 35(2): 155-170. doi: 10.1007/s10118-017-1897-6 shu

Progress in Fluorene-based Wide-bandgap Steric Semiconductors

Meng-na Yu ^a ,
Chang-jin Ou ^b ,
Bin Liu ^a ,
Dong-qing Lin ^a ,
Yu-yu Liu ^a ,
Wei Xue ^a ,
Zong-qiong Lin ^b ,
Jin-yi Lin ^b ,
Yan Qian ^a ,
Sha-sha Wang ^a ,
Hong-tao Cao ^a ,
Lin-yi Bian ^a ,
Ling-hai Xie ^a,, ,
Wei Huang ^a,b,,

a.
Center for Molecular Systems and Organic Devices (CMSOD), Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
b.
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing 211816, China

Corresponding author: Ling-hai Xie, iamlhxie@njupt.edu.cn Wei Huang, iamwhuang@njupt.edu.cn
Received Date: 5 October 2016
Revised Date: 10 November 2016
Accepted Date: 16 November 2016

Fund Project: Jiangsu Planned Projects for Postdoctoral Research Funds 1501019Bthe National Natural Science Foundation of China 61136003the National Natural Science Foundation of China 61475074University of Jiangsu Province Natural Science Foundation Project 14KJB510027the National Natural Science Funds for Excellent Young Scholar 21322402Natural Science Foundation of Jiangsu Province BM2012010Excellent 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 15KJB430019the National Natural Science Foundation of China 21274064the National Natural Science Foundation of China 21504041

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 wide-bandgap 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.
- Organics,
- Steric effect,
- Attractor-repulsor,
- Molecular defects,
- Wide-bandgap
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