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Cationic water-soluble poly(p-phenylene vinylene) for fluorescence sensors and electrostatic self-assembly nanocomposites with quantum dots
Article first published online: 8 SEP 2008
DOI: 10.1002/app.28837
Copyright © 2008 Wiley Periodicals, Inc.
Additional Information
How to Cite
Zhang, Y., Yang, Y., Wang, C.-C., Sun, B., Wang, Y., Wang, X.-Y. and Shen, Q.-D. (2008), Cationic water-soluble poly(p-phenylene vinylene) for fluorescence sensors and electrostatic self-assembly nanocomposites with quantum dots. Journal of Applied Polymer Science, 110: 3225–3233. doi: 10.1002/app.28837
Publication History
- Issue published online: 23 SEP 2008
- Article first published online: 8 SEP 2008
- Manuscript Accepted: 2 JUN 2008
- Manuscript Received: 22 JAN 2008
Funded by
- National Natural Science Foundation of China. Grant Number: 20774040
- Abstract
- Article
- References
- Cited By
Keywords:
- conjugated polymers;
- fluorescence;
- nanocomposites;
- polyelectrolytes;
- sensors
Abstract
A cationic water-soluble poly(p-phenylene vinylene) derivative (poly{2-methoxy-5-[3-(N,N,N-ethyldimethylamino)-1-propoxy]-1,4-phenylene vinylene}bromide) was synthesized by a facile approach. The fluorescence of the conjugated polyelectrolyte was enhanced in the presence of an anionic surfactant because of the regularity of the chain conformation. Meanwhile, its emission was efficiently quenched by a trace amount (10−6 mol/L) of the iron complex Fe(CN)
with pronounced quenching efficiency. The cationic conjugated polymer chains were readily assembled on the surface of negatively charged CdTe quantum dots through electrostatic attraction. The resulting nanocomposites facilitated the charge transfer between the conjugated polymers and the quantum dots because of the extensive interfacial area and intimate contact of the two components. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008