Fluorescent, Thermoresponsive Oligo(ethylene glycol) Methacrylate/9-(4-Vinylbenzyl)-9H-carbazole Copolymers Designed with Multiple LCSTs via Nitroxide Mediated Controlled Radical Polymerization
In: Macromolecules, Jg. 45 (2012-02-10), S. 1879-1891
Online
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Zugriff:
9-(4-Vinylbenzyl)-9H-carbazole (VBK) was used as the “controlling” comonomer for nitroxide mediated polymerization with 10 mol % SG1 free nitroxide relative to BlocBuilder initiator at 80 °C of oligo(ethylene glycol) methyl ether methacrylate (8–9 ethylene glycol (EG) units) (OEGMA8–9), 2-(2-methoxyethoxy)ethyl methacrylate (MEO2MA) and for an OEGMA8–9/MEO2MA-mixed feed. The synthesis of MEO2MA/VBK and OEGMA8–9/VBK copolymers and MEO2MA/OEGMA8–9/VBK terpolymers exhibited linear increases in number-average molecular weight (Mn) versus conversion X, up until X = 0.6, with final copolymers characterized by relatively narrow, monomodal molecular weight distributions (Mw/Mn < 1.4, in most cases). A series of MEO2MA/OEGMA8–9/VBK terpolymers were synthesized and by varying the OEGMA8–9:MEO2MA feed ratios, the terpolymers exhibited tunable lower critical solution temperatures in water (28 °C < LCSTs < 81 °C). MEO2MA/OEGMA8–9/VBK terpolymers were deemed sufficiently pseudo-“living” to reinitiate a second batch ...
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Fluorescent, Thermoresponsive Oligo(ethylene glycol) Methacrylate/9-(4-Vinylbenzyl)-9H-carbazole Copolymers Designed with Multiple LCSTs via Nitroxide Mediated Controlled Radical Polymerization
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Autor/in / Beteiligte Person: | Lessard, Benoît H. ; Marić, Milan ; Edwin Jee Yang Ling |
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Zeitschrift: | Macromolecules, Jg. 45 (2012-02-10), S. 1879-1891 |
Veröffentlichung: | American Chemical Society (ACS), 2012 |
Medientyp: | unknown |
ISSN: | 1520-5835 (print) ; 0024-9297 (print) |
DOI: | 10.1021/ma202648k |
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