Citation: Meng-na Yu, Bin Liu, Jin-yi Lin, Tao Li, Dan Lu, Feng Liu, Wen-sai Zhu, Ling-hai Xie, Wei Huang. Nondilute 1,2-Dichloroethane Solution of Poly(9,9-dioctylfluorene-2,7-diyl): A Study on the Aggregation Process[J]. Chinese Journal of Polymer Science, ;2016, 34(11): 1311-1318. doi: 10.1007/s10118-016-1851-z shu

Nondilute 1,2-Dichloroethane Solution of Poly(9,9-dioctylfluorene-2,7-diyl): A Study on the Aggregation Process

Meng-na Yu ^a ,
Bin Liu ^a ,
Jin-yi Lin ^b,d,, ,
Tao Li ^c ,
Dan Lu ^c,, ,
Feng Liu ^b ,
Wen-sai Zhu ^b ,
Ling-hai Xie ^a ,
Wei Huang ^a,b,,

a.
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
c.
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
d.
The Blackett Laboratory, Imperial College London, Prince Consort Road, London SW72AZ, UK

Corresponding author: Jin-yi Lin, iamjylin@njtech.edu.cn Dan Lu, lud@jlu.edu.cn Wei Huang, iamwhuang@njupt.edu.cn
Received Date: 4 May 2016
Revised Date: 23 June 2016
Accepted Date: 28 June 2016

Fund Project: Natural Science of the Education Committee of Jiangsu Province 15KJB430019Jiangsu Planned Projects for Postdoctoral Research Funds 1501019BSICAM Fellowship, Imperial College London and Open Project from State Key Laboratory of Supramolecular Structure and Materials at Jilin University sklssm201612China Postdoctoral Science Foundation 2015M580419University of Jiangsu Province Natural Science Foundation Project 14KJB510027the National Natural Science Funds for Excellent Young Scholar 21322402the National Natural Science Foundation of China 21504041the National Key Basic Research Program of China (973) 2015CB932200

Molecular aggregates in conjugated polymer (CP) solution can propagate into mesoscale morphology of the relevant film and further dominate the optoelectronic property. Herein, we probed the aggregation behavior of poly(9,9-dioctylfluorene-2,7-diyl) (PFO) and studied its influence on the photophysical property in 1,2-dichloroethane (DCE) solution, where the contents of β-phase or -aggregates increased with prolonged aging time. Thereinto, high quality β-film was fabricated from DCE solution with critical aggregate time of 6 min. The film exhibited excellent surface morphology and characteristic emission of β-phase. Meanwhile, films prepared from aged DCE solutions exhibited high crystallinity, which was promising to obtain higher photoluminance efficiency and charge transport ability simultaneously. Therefore, it is significant to get deep insight into the aggregation behavior of CP, which is involved not only with the solution-processing technology of plastic device, but also with the optoelectronic property of CP.
- Poly(9,9-dioctylfluorene-2,7-diyl),
- Aggregation behavior,
- Film morphology,
- β-Phase
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