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Large femtosecond third-order nonlinear optical response in a novel donor-acceptor copolymer consisting of ethynylfluorene and tetraphenyldiaminobiphenyl units
Zhan, XW; Liu, YQ; Zhu, DB; Huang, WT; Gong, QH
2001-05-01
Source PublicationCHEMISTRY OF MATERIALS
ISSN0897-4756
Volume13Issue:5Pages:1540-1544
AbstractA novel donor-acceptor conjugated copolymer consisting of the electron-accepting moiety 2,7-diethynylfluorene and the electron-donating moiety tetraphenyldiaminobiphenyl (TPD), i.e., poly{(2,7-diethynyl-9,9-di-2-ethylhexylfluorene)-alt-co-[N,N'-diphenyl-N,N'-bis(4-phenyl)-1,1'-biphenyl-4,4'-diamine]} (TPD-PFE), and its cousins without the alkyne or TPD segments, namely, poly{(9,9-di-2-ethylhexyl-2,7-fluorene)-alt-co-[N,N'-diphenyl-N,N'-bis(4-phenyl)-1,1'- biphenyl-4,4'-diamine]) (TPD-PF) and poly(2,7-9,9-di-2-ethylhexylfluorenyleneethynylene) (PFE), were synthesized via Pd-catalyzed coupling reactions. The third-order nonlinear optical (NLO) properties of these polymers were characterized using a femtosecond time-resolved optical Kerr effect technique. The ultrafast second-order hyperpolarizability of TPD-PFE was estimated to be as large as 4.5 x 10(-30) esu in the nonresonant region, larger than those of its counterparts. The electronic transitions of the fluorene-based polymers can be readily tuned by varying the nature of the co-units in the main chain, and the intrachain charge transfer between the elect-ron-deficient and electron-excessive units can enhance the NLO properties of the polymers.
Indexed BySCI
Language英语
WOS IDWOS:000168861200019
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/77496
Collection中国科学院化学研究所
Corresponding AuthorLiu, YQ
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
2.Peking Univ, Dept Phys, Beijing 100871, Peoples R China
3.Peking Univ, Mesoscop Phys Lab, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Zhan, XW,Liu, YQ,Zhu, DB,et al. Large femtosecond third-order nonlinear optical response in a novel donor-acceptor copolymer consisting of ethynylfluorene and tetraphenyldiaminobiphenyl units[J]. CHEMISTRY OF MATERIALS,2001,13(5):1540-1544.
APA Zhan, XW,Liu, YQ,Zhu, DB,Huang, WT,&Gong, QH.(2001).Large femtosecond third-order nonlinear optical response in a novel donor-acceptor copolymer consisting of ethynylfluorene and tetraphenyldiaminobiphenyl units.CHEMISTRY OF MATERIALS,13(5),1540-1544.
MLA Zhan, XW,et al."Large femtosecond third-order nonlinear optical response in a novel donor-acceptor copolymer consisting of ethynylfluorene and tetraphenyldiaminobiphenyl units".CHEMISTRY OF MATERIALS 13.5(2001):1540-1544.
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