Highly fluorescing solid DNA-cationic polyelectrolyte complexes prepared from a natural DNA and a poly(fluorenevinylene-alt-phenylene) bearing quaternary ammonium pendants
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Abstract A fluorescing, copolymer (Q)-bearing, quaternary ammonium pendant was mixed with excess natural salmon sperm DNA with a molecular weight of 1.3×106 (2,000 base pairs) to afford highly fluorescing, complex mixtures. The fluorescence life-time of the polymer Q was greatly increased when mixed with DNA: for the mixture of QNA=1:750 the fast and slow decay lifetimes increased from ca. 10 to 100 ps and from 20 ps to ca. 1 ns, respectively. The enhanced fluorescence of the mixtures was ascribed to efficient compartmentalization and reduced conformational relaxation of the polymer Q by complexation with excess DNA.




  • Content Type Journal Article
  • Pages 245-249
  • DOI 10.1007/BF03218687
  • Authors
    • Young-Jun Yu, Department of Chemistry and Center for Advanced Materials Chemistry, Korea University, 136-701 Seoul, Korea
    • Young-Wan Kwon, Department of Chemistry and Center for Advanced Materials Chemistry, Korea University, 136-701 Seoul, Korea
    • Kyu-Nam Kim, Department of Chemistry and Center for Advanced Materials Chemistry, Korea University, 136-701 Seoul, Korea
    • Eui-Doo Do, Department of Chemistry and Center for Advanced Materials Chemistry, Korea University, 136-701 Seoul, Korea
    • Dong-Hoon Choi, Department of Chemistry and Center for Advanced Materials Chemistry, Korea University, 136-701 Seoul, Korea
    • Jung-Il Jin, Department of Chemistry and Center for Advanced Materials Chemistry, Korea University, 136-701 Seoul, Korea
    • Hee-Won Shin, Department of Chemistry, Yonsei University, 120-749 Seoul, Korea
    • Yong-Rok Kim, Department of Chemistry, Yonsei University, 120-749 Seoul, Korea
    • Ik Joong Kang, Department of Chemical and Bio Engineering, Kyungwon University, 461-701 Gyeonggi, Korea
    • John A. Mikroyannidis, Chemical Technology Laboratory, Department of Chemistry, University of Patras, GR-26500 Patras, Greece





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