ICCAS OpenIR
LiCl-Promoted Chain Growth Kumada Catalyst-Transfer Polycondensation of the "Reversed" Thiophene Monomer
Wu, Shupeng1,2; Huang, Li1,2; Tian, Hongkun1; Geng, Yanhou1; Wang, Fosong1
2011-10-11
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume44Issue:19Pages:7558-7567
AbstractThe effect of LiCl on the chain growth Kumada catalyst-transfer polycondensation (KCTP) of the "reversed" thiophene monomer, 5-bromo-2-chloromagnesio-3-hexylthiophene (3a) (that has bulky substituent adjacent to the chloromagnesium group), was investigated. LiCl promotes the polymerization of 3a, and the polymerization also exhibits living characteristics similar to those of the "normal" monomer, 2-bromo-5-chloromagnesio-3-heacylthiophene (3b). However, initiation is much slower than chain propagation due to the steric hindrance between hexyl groups in the transmetalation (TM) step that leads to the formation of the initiator via head-to-head (HH) coupling. Consequently, regioregular poly(3-hexylthiophene) (P3HT) with large polydispersity (PDI) and higher number-average molecular weight (M(n)) than the theoretical value was obtained. Because of the slow initiation with 3a, the polymerization of 3a occurs primarily after the consumption of 3b in the copolymerization of 3a and 3b, and P3HT with high regioregularity was still obtained.
DOI10.1021/ma201192p
Indexed BySCI
Language英语
WOS IDWOS:000295487600009
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72508
Collection中国科学院化学研究所
Corresponding AuthorGeng, Yanhou
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wu, Shupeng,Huang, Li,Tian, Hongkun,et al. LiCl-Promoted Chain Growth Kumada Catalyst-Transfer Polycondensation of the "Reversed" Thiophene Monomer[J]. MACROMOLECULES,2011,44(19):7558-7567.
APA Wu, Shupeng,Huang, Li,Tian, Hongkun,Geng, Yanhou,&Wang, Fosong.(2011).LiCl-Promoted Chain Growth Kumada Catalyst-Transfer Polycondensation of the "Reversed" Thiophene Monomer.MACROMOLECULES,44(19),7558-7567.
MLA Wu, Shupeng,et al."LiCl-Promoted Chain Growth Kumada Catalyst-Transfer Polycondensation of the "Reversed" Thiophene Monomer".MACROMOLECULES 44.19(2011):7558-7567.
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