Article (Scientific journals)
Single-mode microwave-assisted atom transfer radical polymerization catalyzed by [RuCl2(p-cymene)(PCy3)]
Delfosse, Sebastien; Borguet, Yannick; Delaude, Lionel et al.
2007In Macromolecular Rapid Communications, 28 (4), p. 492-503
Peer Reviewed verified by ORBi
 

Files


Full Text
A035.pdf
Publisher postprint (321.28 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
methyl methacrylate; microwave; radical polymerization; ruthenium; atom transfer radical polymerization (ATRP)
Abstract :
[en] In the atom transfer radical polymerization (ATRP) of methyl methacrylate in the presence of [RuCl2(p-cymene)(PCy3)] (p-cymene=4-isopropyltoluene, PCy3=tricyclohexylphosphine), a microwave effect is noted which strikingly depends on both the temperature and the method used (conventional microwave synthesis (CMS, i.e., without simultaneous cooling) or enhanced microwave synthesis (EMS, with simultaneous cooling)). Thus, between 85 and 120 degrees C under CMS conditions, microwave-assisted polymerizations take place in a controlled fashion, and at 120 degrees C the microwave-assisted polymerization is three times faster than the conventionally heated protocol. However, from 130 degrees C, microwave irradiation has a deleterious effect and the polymerizations are no longer controlled. Likewise, using the EMS method in the temperature range of 85-120 degrees C results in uncontrolled processes, as indicated by the unsuccessful resumption of the polymerizations. These failures might be attributed to a significantly high concentration of radical species, which results in enhanced propagation and termination - mostly disproportionation - rates.
Disciplines :
Chemistry
Author, co-author :
Delfosse, Sebastien
Borguet, Yannick ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Delaude, Lionel  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Demonceau, Albert ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie macromoléculaire et catalyse organique
Language :
English
Title :
Single-mode microwave-assisted atom transfer radical polymerization catalyzed by [RuCl2(p-cymene)(PCy3)]
Publication date :
2007
Journal title :
Macromolecular Rapid Communications
ISSN :
1022-1336
eISSN :
1521-3927
Publisher :
Wiley-VCH Verlag Gmbh, Weinheim, Germany
Volume :
28
Issue :
4
Pages :
492-503
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 June 2009

Statistics


Number of views
128 (12 by ULiège)
Number of downloads
2 (2 by ULiège)

Scopus citations®
 
46
Scopus citations®
without self-citations
37
OpenCitations
 
43

Bibliography


Similar publications



Contact ORBi