Journal of the American Chemical Society, volume 138, issue 35, pages 11117-11120

Metal-Free Alternating Copolymerization of CO2 with Epoxides: Fulfilling “Green” Synthesis and Activity

Publication typeJournal Article
Publication date2016-08-26
Q1
Q1
SJR5.489
CiteScore24.4
Impact factor14.4
ISSN00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
Polycarbonates were successfully synthesized for the first time through the anionic copolymerization of epoxides with CO2, under metal-free conditions. Using an approach based on the activation of epoxides by Lewis acids and of CO2 by appropriate cations, well-defined alternating copolymers made of CO2 and propylene oxide (PO) or cyclohexene oxide (CHO) were indeed obtained. Triethyl borane was the Lewis acid chosen to activate the epoxides, and onium halides or onium alkoxides involving either ammonium, phosphonium, or phosphazenium cations were selected to initiate the copolymerization. In the case of PO, the carbonate content of the poly(propylene carbonate) formed was in the range of 92-99% and turnover numbers (TON) were close to 500; in the case of CHO perfectly alternating poly(cyclohexene carbonate) were obtained and TON values were close to 4000. The advantages of such a copolymerization system are manifold: (i) no need for multistep catalyst/ligand synthesis as in previous works; (ii) no transition metal involved in the copolymer synthesis and therefore no coloration of the samples isolated; and (iii) no necessity for postsynthesis purification.
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GOST Copy
Zhang D. et al. Metal-Free Alternating Copolymerization of CO2 with Epoxides: Fulfilling “Green” Synthesis and Activity // Journal of the American Chemical Society. 2016. Vol. 138. No. 35. pp. 11117-11120.
GOST all authors (up to 50) Copy
Zhang D., Boopathi S. K., Hadjichristidis N., Gnanou Y., Feng X. Metal-Free Alternating Copolymerization of CO2 with Epoxides: Fulfilling “Green” Synthesis and Activity // Journal of the American Chemical Society. 2016. Vol. 138. No. 35. pp. 11117-11120.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1021/jacs.6b06679
UR - https://doi.org/10.1021/jacs.6b06679
TI - Metal-Free Alternating Copolymerization of CO2 with Epoxides: Fulfilling “Green” Synthesis and Activity
T2 - Journal of the American Chemical Society
AU - Zhang, Dongyue
AU - Boopathi, Senthil K
AU - Hadjichristidis, N.
AU - Gnanou, Yves
AU - Feng, Xiaoshuang
PY - 2016
DA - 2016/08/26
PB - American Chemical Society (ACS)
SP - 11117-11120
IS - 35
VL - 138
SN - 0002-7863
SN - 1520-5126
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{2016_Zhang,
author = {Dongyue Zhang and Senthil K Boopathi and N. Hadjichristidis and Yves Gnanou and Xiaoshuang Feng},
title = {Metal-Free Alternating Copolymerization of CO2 with Epoxides: Fulfilling “Green” Synthesis and Activity},
journal = {Journal of the American Chemical Society},
year = {2016},
volume = {138},
publisher = {American Chemical Society (ACS)},
month = {aug},
url = {https://doi.org/10.1021/jacs.6b06679},
number = {35},
pages = {11117--11120},
doi = {10.1021/jacs.6b06679}
}
MLA
Cite this
MLA Copy
Zhang, Dongyue, et al. “Metal-Free Alternating Copolymerization of CO2 with Epoxides: Fulfilling “Green” Synthesis and Activity.” Journal of the American Chemical Society, vol. 138, no. 35, Aug. 2016, pp. 11117-11120. https://doi.org/10.1021/jacs.6b06679.
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