Citation: Xiang An, Jinghao Yang, Man Xu, Lili Sun, Lubing Bai, Kai Wang, Zhiqiang Zhuo, Yingying Zheng, Jinyi Lin, Xuehua Ding, Yuyu Liu, Linghai Xie, Chengrong Yin, Wei Huang. Universal 4-qualifiable fluorene-based building blocks for potential optoelectronic applications[J]. Chinese Chemical Letters, ;2022, 33(12): 5137-5141. doi: 10.1016/j.cclet.2022.03.102 shu

Universal 4-qualifiable fluorene-based building blocks for potential optoelectronic applications

Xiang An ^{a, 1} ,
Jinghao Yang ^{a, 1} ,
Man Xu ^{b, 1} ,
Lili Sun ^a ,
Lubing Bai ^a ,
Kai Wang ^a ,
Zhiqiang Zhuo ^a ,
Yingying Zheng ^a ,
Jinyi Lin ^{a, *,} ,
Xuehua Ding ^a ,
Yuyu Liu ^{d, *,} ,
Linghai Xie ^b ,
Chengrong Yin ^a ,
Wei Huang ^{a, b, c, *,}

a.
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
b.
State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China
c.
Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University, Xi'an 710072, China
d.
Electrical Engineering College, Nanjing Vocational University of Industry Technology, Nanjing 210023, China

iamjylin@njtech.edu.cn

2021101180@niit.edu.cn

wei-huang@njtech.edu.cn

Received Date: 18 December 2021
Revised Date: 25 March 2022
Accepted Date: 28 March 2022
Available Online: 1 April 2022

Figures(9)

In the design of conjugated molecules, modular production enables materials to easily realize structure modification and precisely tune their photoelectrical property. Construction of a novel and universal building block is crucial to design and manufacture high performance and stable conjugated molecules for optoelectronic application. Herein, we originally demonstrated a universal 4-qualifiable fluorene-based building block, which is a fundamental molecular segment to functionalize and obtain novel conjugated materials. Compared to the traditional modification at 9-site, additional 4-position functionalization provided an exciting blueprint to not only tune electronic structure and excited state via p-n molecular design engineering and space charge-transfer strategy, but also allow for optimizing intermolecular arrangement and obtaining solution-processing ability. The introduction of the 4-site substituent in fluorene based semiconductors may endow materials with unique properties. Finally, we successfully prepared two stable deep-blue light-emitting conjugated polymer, PODOPF and PODOF, by utilizing the 4-substituent fluorene based building block. It is believable that the performance, stability and processibility of reported outstanding fluorene-based conjugated molecules can be further optimized based on this universal building block.
- Side-chain coupling,
- Small molecular emitter,
- Morphological stability,
- Deep-blue emission,
- Optoelectronic device
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