Journal
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
Volume 369, Issue 5, Pages 428-432Publisher
SPRINGER-VERLAG
DOI: 10.1007/s002160000673
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Single-strand DNA could bind with chitosan on a platinum electrode via forming a tight DNA-chitosan complex. The salt concentration of the ssDNA solution had an obvious effect on the surface coverage, the immobilization was remarkably reduced at high salt concentration, The sample ssDNA immobilized on the chitosan-modified electrode can hybridize efficiently with the complementary sequences and be successfully used for the sequence-specific DNA detection. The same results could be obtained using a gold or graphite electrode modified with chitosan. The stability of this electrode has been also discussed.
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