ALTERNATING COPOLYMERIZATION OF CYCLOHEXENE OXIDE AND CARBON DIOXIDE UNDER COBALT PORPHYRIN CATALYST

Cobalt porphyrin complexes （TPPConIX） （TPP = 5,10,15,20-tetraphenyl-porphyrin; X = halide） in combination with bis（triphenylphosphine） iminium chloride （PPNC1） were used for the eopolymerization of cyelohexene oxide and CO2. The highest turnover frequency of 67.2 h^-1 was achieved after 13 h at 20℃,...

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Published inChinese journal of polymer science Vol. 29; no. 5; pp. 602 - 608
Main Authors Qin, Yu-sheng, Chen, Li-jie, Wang, Xian-hong, Zhao, Xiao-jiang, Wang, Fo-song
Format Journal Article
LanguageEnglish
Published Heidelberg Chinese Chemical Society and Institute of Chemistry, CAS 01.09.2011
Subjects
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Industrial Chemistry/Chemical Engineering
Polymer Sciences
催化剂
共聚
四苯基卟啉
数均分子量
氧化物
环己烯
钴卟啉
高二氧化碳
Cyclohexene oxide
Poly(1,2-cyclohexylene carbonate)
Copolymerization
Cobalt porphyrin
Sstereochemistry
Carbon dioxide
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Summary:Cobalt porphyrin complexes （TPPConIX） （TPP = 5,10,15,20-tetraphenyl-porphyrin; X = halide） in combination with bis（triphenylphosphine） iminium chloride （PPNC1） were used for the eopolymerization of cyelohexene oxide and CO2. The highest turnover frequency of 67.2 h^-1 was achieved after 13 h at 20℃, and the obtained poly（1,2-cyclohexylene carbonate） （PCHC） showed number average molecular weight （Mn） of 10 × 10^3. Though the obtained PCHC showed atactie structure, the m-centered tetrads content reached 58.1% at CO2 pressure of 1.0 MPa, and decreased to 51.9% at CO2 pressure of 6.0 MPa, indicating that it was inclined to form atactic polymer at high CO2 pressure.
Bibliography:Carbon dioxide; Cobalt porphyrin; Cyclohexene oxide; Poly（1,2-cyclohexylene carbonate）; Sstereochemistry;Copolymerization.
Cobalt porphyrin complexes （TPPConIX） （TPP = 5,10,15,20-tetraphenyl-porphyrin; X = halide） in combination with bis（triphenylphosphine） iminium chloride （PPNC1） were used for the eopolymerization of cyelohexene oxide and CO2. The highest turnover frequency of 67.2 h^-1 was achieved after 13 h at 20℃, and the obtained poly（1,2-cyclohexylene carbonate） （PCHC） showed number average molecular weight （Mn） of 10 × 10^3. Though the obtained PCHC showed atactie structure, the m-centered tetrads content reached 58.1% at CO2 pressure of 1.0 MPa, and decreased to 51.9% at CO2 pressure of 6.0 MPa, indicating that it was inclined to form atactic polymer at high CO2 pressure.
11-2015/O6
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-011-1073-3