Theoretical and Experimental Study of Photophysical Characteristics between Poly（9,9-dioctylfluorene） and Poly（9,9-dioctylfluorene-co-benzothiadiazole）
聚（9，9-二辛基芴）和聚（9，9-二辛基芴-共-苯并噻二唑）的光物理特性的理论和实验研究
摘要
The photo-physical characteristics of semiconductor polymer are systematically stud- ied through comparing poly （9,9-dioctylfluorene） （PFO） and poly （9,9-dioctylfluorene-co- benzothiadiazole） （F8BT）. The quantum chemical calculation shows that the introduction of benzothiadiazole unit facilitates the intrachain charge transfer （ICT） and modulates the electronic transition mechanism of polymer. The transient absorption measurement exhibits that intrachain exciton relaxation is dominant in the decay of excited PFO in a monodis- perse system and intrachain exciton interaction could appear at high excitation intensity. In F8BT solution, the ICT state exists and participates in the relaxation of excited state. The relaxation processes of PFO and F8BT in the condensed phase both accelerate and show obvious exciton-exciton annihilation behavior at high excitation intensity. At the same excitation intensity, the mean lifetime of F8BT is longer than that of PFO, which may be assigned to the excellent delocalization of charge.
参考文献17
-
1H. Sirringhaus, P. J. Brown, R. H. Friend, M. M. Nielsen, K. Bechgaard, B. M. W. Langeveld-Voss, A. J. H. Spiering, R. A. J. Janssen, E. W. Meijer, P. Her- wig, and D. M. de Leeuw, Nature 401, 685 (1999).
-
2R. H. Friend, R. W. Gymer, A, B. Holmes, J. H. Bur- roughes, R. N. Marks, C. Taliani, D. D. C. Bradley, D. A. Dos Santos, J. L. Bredas, M. Logdlund, and W. R. Salaneck, Nature 397, 121 (1999).
-
3T. M. Clarke and J. R. Durrant, Chem. Rev. 110, 6736 (2010).
-
4V. N. Bliznyuk, S. A. Carter, J. C. Scott, G. Klrner, R. D. Miller, and D. C. Miller, Macromolecules 32, 361 (1999).
-
5S. Y. Cho, A. C. Grimsdale, D. J. Jones, S. E. Watkins, and A. B. Holmes, J. Am. Chem. Soc. 129, 11910 (2007).
-
6A. P. Kulknrni, Y. Zhu, A. Babel, P. T. Wu, and S. A Jenekhe, Chem. Mater. 20, 4212 (2008).
-
7V. R. Donuru, G. K. Vegesna, S. Velayudham, S. Green and H. Y. Liu, Chem. Mater. 21, 2130 (2009).
-
8Y. S. Park, D. Kim, H. Lee, and B. Moon, Org. Lett 8, 4699 (2006).
-
9J. S. Kim, L. Lu, P. Sreearunothai, A. Seeley, K. H Yim, A. Petrozza, C. E. Murphy, D. Beljonne, J. Cornil and R. H. Friend, J. Am. Chem. Soc. 130, 13120 (2008).
-
10N. Banerji, S. Cowan, M. Leclerc, E. Vauthey, and A J. Heeger, J. Am. Chem. Soc. 132, 17459 (2010).
-
1黄为民,施剑林.ZrO_2:CdS薄膜的光物理性质[J].无机材料学报,2000,15(5):947-951.
-
2张继森,张立国,任建岳,段配华,骆永石,吕少哲.室温下Yb^(3+)和Er^(3+)掺杂的NaYS_2粉末材料的Stocks和Anti-Stocks发光[J].发光学报,2013,34(7):824-828. 被引量：1
-
3李永军,臧子龙.动力系统中紧的指数吸引集的存在性[J].数学杂志,2010,30(5):891-896.
-
4费浩生.C_（60）的光物理及其非线性光学特性[J].物理,1994,23(1):14-17. 被引量：1
-
5徐阳,王华,宋春丽,周禾丰,许并社.一种近白光发射聚合物的合成与发光性能[J].发光学报,2010,31(2):274-278. 被引量：8
-
6SUI Ning,HUANG Tianhao,WANG Yinghui,ZHANG Hanzhuang.Theoretical and Experimental Studies on Photophysical Characteristics of Low Bandgap Polymers[J].Chemical Research in Chinese Universities,2014,30(3):513-517.
-
7逄辉,曹建华,隋岩,李雅敏,华瑞茂.含噻二唑聚芴类白光聚合物的合成与发光性能研究[J].发光学报,2013,34(12):1567-1571. 被引量：2
-
8章勇,侯琼,郑树文,李述体,范广涵.芴基共聚物共混与InGaN基发光二极管杂合的白光发射[J].华南师范大学学报（自然科学版）,2009,41(4):57-60. 被引量：1
-
9微腔：极化激射[J].中国光学,2013,6(4):612-612.
-
10石英,申怀彬,栾壮,齐立峰,杨莹,金明星,李林松,丁大军.CdTe量子点的超快过程研究[J].原子与分子物理学报,2009,26(4):615-618.
