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

作　　者：Meng-na Yu Bin Liu 林进义 Tao Li 陆丹 Feng Liu Wen-sai Zhu Ling-hai Xie 黄维 

机构地区：[1]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 [2]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) [3]The Blackett Laboratory,Imperial College London [4]State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University

出　　处：《Chinese Journal of Polymer Science》2016年第11期1311-1318,共8页高分子科学（英文版）

基　　金：financially supported by the National Key Basic Research Program of China(973)(No.2015CB932200);the National Natural Science Funds for Excellent Young Scholar(No.21322402);the National Natural Science Foundation of China(Nos.21504041,21274064 and 61475074);University of Jiangsu Province Natural Science Foundation Project(No.14KJB510027);Natural Science of the Education Committee of Jiangsu Province(No.15KJB430019);Jiangsu Planned Projects for Postdoctoral Research Funds(No.1501019B);China Postdoctoral Science Foundation(No.2015M580419);SICAM Fellowship,Imperial College London;Open Project from State Key Laboratory of Supramolecular Structure and Materials at Jilin University(No.sklssm201612)

摘　　要：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.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.

关 键 词：aggregation crystallinity conjugated aggregate optoelectronic chains propagate mesoscale insight stacking 

分 类 号：TQ316.3[化学工程—高聚物工业]