DOI: 10.1002/app.1847. Mechanism analysis of the PEG‐participated Gilch synthesis for soluble poly(<i>p</i>‐phenylene vinylene) derivatives

Mechanism analysis of the PEG‐participated Gilch synthesis for soluble poly(p‐phenylene vinylene) derivatives

10.1002/app.1847

Crossref journal-article

Wiley

Journal of Applied Polymer Science (311)

Abstract

AbstractBy introducing poly(ethylene glycol) (PEG) into the Gilch reaction system for the synthesis of soluble poly(p‐phenylene vinylene)s (PPVs), significant changes were observed. First, with the involvement of PEG, the polymerization degree increases significantly and the molecular weight distribution becomes wider. The multimodial characteristic of the GPC curves at low conversions is quite evident. Second, at low PEG content, gelation dramatically disappears; with an increase of PEG, gelation reappears. From the above experimental results, the existence of various types of polymerization‐active species and the anionic polymerization mechanism are confirmed, which are due to the dissociation of the carbanion–cation pairs by the complexing effect of PEG. At the same time, the enhanced dissociation of the base (t‐BuO−K+) ion pairs by PEG may be responsible for the dramatic disappearance of gelation. Free t‐BuO− anions have strengthened the basicity and accelerated the conjugation‐formation process which competes with the interchain by‐reactions. Gelation is therefore avoided. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 263–268, 2001

Bibliography

Yin, C., & Yang, C. (2001). Mechanism analysis of the PEGâparticipated Gilch synthesis for soluble poly(pâphenylene vinylene) derivatives. Journal of Applied Polymer Science, 82(2), 263â268. Portico.

Authors 2

Chun Yin (first)
Chang‐Zheng Yang (additional)

References 16 Referenced 14

10.1002/(SICI)1521-3773(19980302)37:4<402::AID-ANIE402>3.0.CO;2-9
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Dates

Type	When
Created	20 years, 10 months ago (Oct. 28, 2004, 10:50 a.m.)
Deposited	1 year, 10 months ago (Oct. 31, 2023, 8:25 a.m.)
Indexed	1 year, 10 months ago (Nov. 1, 2023, 3:33 a.m.)
Issued	24 years, 1 month ago (July 30, 2001)
Published	24 years, 1 month ago (July 30, 2001)
Published Online	24 years, 1 month ago (July 30, 2001)
Published Print	23 years, 10 months ago (Oct. 10, 2001)

Funders 0

None

BibTeX

@article{Yin_2001, title={Mechanism analysis of the PEG‐participated Gilch synthesis for soluble poly(p‐phenylene vinylene) derivatives}, volume={82}, ISSN={1097-4628}, url={http://dx.doi.org/10.1002/app.1847}, DOI={10.1002/app.1847}, number={2}, journal={Journal of Applied Polymer Science}, publisher={Wiley}, author={Yin, Chun and Yang, Chang‐Zheng}, year={2001}, month=jul, pages={263–268} }

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