Synthesis of hybrid polymers using atom transfer radical polymerization: Homopolymers and block copolymers from polyhedral oligomeric silsesquioxane monomers

Macromolecules

Volumn 33, Issue 1, 2000, Pages 217-220

  Pyun, Jeffrey ^a   Matyjaszewski, Krzysztof ^a  

^a CARNEGIE MELLON UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ATOMS; BLOCK COPOLYMERS; DISPERSIONS; FREE RADICAL POLYMERIZATION; MONOMERS; OLIGOMERS; PARAFFINS; SYNTHESIS (CHEMICAL);

ATOM TRANSFER RADICAL POLYMERIZATION (ATRP); POLYHEDRAL OLIGOMERIC SILSESQUIOXANE;

POLYACRYLATES;

EID: 0033640256     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma9910787     Document Type: Article

References (11)

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8. 1Cl (2.3 mg, 0.024 mmol). The vial was fitted with a rubber septum and was evacuated and backfilled with argon for three cycles. Argon bubbled toluene (60 wt % relative to monomer) was then added to the vial to dissolve the monomer, followed by the addition of PMDETA (5.0 mL, 0.024 mmol). 4-Methylphenyl 2-bromoisobutyrate (12.4 mg, 0.048 mmol) was dissolved in argon-bubbled toluene (0.5 mL) and added via syringe after the copper complex was allowed to form. The vial was then placed in an oil bath at 50°C for an appropriate reaction time. The polymer solution was then filtered through neutral alumina and precipitated into methanol (10-fold excess). From precipitation into methanol, residual monomer could not be separated from the polymer. In the preparation of block copolymers the same procedure was used, except poly(methyl acrylate) star and poly(n-butyl acrylate) macroinitiators were weighed into the reaction vial along with the other solids, prior to the addition of solvent.
9. Shipp, D. A.; Wang, J.-L.; Matyjaszewski, K. Macromolecules 1998, 31, 8005.
10. p(MA-POSS) as determined from conversion.
11. Matyjaszewski, K.; Miller, P. J.; Pyun, J.; Kickelbick, G.; Diamanti, S. Macromolecules 1999, 32, 6526.