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Synthesis and characterization of copolymers with 2,5-bis[(5-decaoxyphenyl)-1,3,4-oxadiazole] styrene monomer and vinyl carbazoles
Chai Chunping1; Fan Xinghe2; Chen Xiaofang2; Zhou Qifeng2
2008-02-01
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue2Pages:197-202
AbstractBy radical polymerization initiated with BPO, a novel series of random copolymers of 2, 5-bis [ (5-decaoxyphenyl)-1 3,4-oxadiazole] styrene (POC10) monomer and vinyl carbazoles (NVKs) are synthesized for first time. The elemental analyses of the copolymers indicated that POC10 and NVK contents in the copolymers were very close to the feed compositions. Molecular weight and its distribution of the copolymers were experimentally elucidated using a gel permeation chromatography. They all have good solubility in common organic solvents, such as chloroform, toluene, and tetrahydrofuran and so on. The structures of the copolymers were characterized by IR and (1)H-HNMR. Their weight loss was less than 5 % on heating to about 270 degrees C under nitrogen atmosphere. The DSC graph has only one glass transition, which represents there is no phase- separation in copolymer. The photoluminescence properties were characterized by UV absorption and fluorescence spectrum in detail. The random copolymers exhibited a PC10-segment dominated UV absorption peak at 320 nm and narrow band gap NVK absorption at 228 mu. Under UV excitation, these copolymers emitted bright blue fluorescence at abound 414 similar to 447 nm in THF solution and 435 similar to 446 nm in thin films form. Their photoluminescences are both in blue light area. Compared with the solution PL, complete PL excitation energy transfer from the NVK segment to the POC10 unit could be achieved by film PL at lower NVK content. With units of carbazole increasing, fluorescence quantum yield of copolymers decreases.
KeywordVinyl Carbazoles Copolymers 1 3 4-oxadiazole
Indexed BySCI
Language英语
WOS IDWOS:000254640200018
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64884
Collection中国科学院化学研究所
Corresponding AuthorChai Chunping
Affiliation1.Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China
2.Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys, Minist Educ,Coll Chem & Mol Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Chai Chunping,Fan Xinghe,Chen Xiaofang,et al. Synthesis and characterization of copolymers with 2,5-bis[(5-decaoxyphenyl)-1,3,4-oxadiazole] styrene monomer and vinyl carbazoles[J]. ACTA POLYMERICA SINICA,2008(2):197-202.
APA Chai Chunping,Fan Xinghe,Chen Xiaofang,&Zhou Qifeng.(2008).Synthesis and characterization of copolymers with 2,5-bis[(5-decaoxyphenyl)-1,3,4-oxadiazole] styrene monomer and vinyl carbazoles.ACTA POLYMERICA SINICA(2),197-202.
MLA Chai Chunping,et al."Synthesis and characterization of copolymers with 2,5-bis[(5-decaoxyphenyl)-1,3,4-oxadiazole] styrene monomer and vinyl carbazoles".ACTA POLYMERICA SINICA .2(2008):197-202.
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