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- Title
New Water-Soluble Cationic Poly( p-phenylenevinylene) Derivative: the Interaction with DNA and Selective Fluorescence Enhancement Induced by ssDNA.
- Authors
Zhang, Wenjun; Qin, Jingui; Xu, Li; Yang, Chuluo
- Abstract
A new cationic cyano-substituted poly(p-phenylenevinylene) (N-CNPPV) is synthesized by Knoevenagel condensation. The water-soluble polymer shows different emission spectra in different solvents and displays unique fluorescent behaviors in the mixed solvents of water and THF. The new polymer can form a complex with ssDNA by adopting a more planar conformation, exhibiting red shift of emission wavelength and enhancement of fluorescence intensity. By investigating the fluorescent response of N-CNPPV to various surfactants, we demonstrate that the hydrophobic interaction and electrostatic interaction result in the selective response of N-CNPPV to ssDNA. This is the first report on selective fluorescence enhancement of conjugated polyelectrolyte induced by ssDNA.
- Subjects
POLYPHENYLENE vinylene; CATIONIC polymers; POLYETHYLENE synthesis; EMISSION spectroscopy; FLUORESCENCE; SINGLE-stranded DNA
- Publication
Macromolecular Rapid Communications, 2013, Vol 34, Issue 5, p442
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201200696