期刊
CURRENT APPLIED PHYSICS
卷 12, 期 6, 页码 1493-1496出版社
ELSEVIER
DOI: 10.1016/j.cap.2012.04.023
关键词
DNA sensor; Hoechst; Microfluidic chip; Immobilization-free process; Regeneration
资金
- GRRC program of Gyeonggi province [GRRC Kyungwon] [2011-B03]
We fabricate microfluidic DNA sensors based on the electrochemical method that uses Hoechst 33258 [2'-(4-hydroxyphenyl)-5-(4-methyl-1-piperazinyl)-2,5'-bi(1H-benzimidazole)] as a DNA intercalator. These chips are fabricated without a probe immobilization process, thereby being more simply regenerated than other typical DNA chips. Linear sweep voltammetric measurements show an anodic-current decrease consistent with the DNA duplex formation which occurs when the target is fully complementary to the probe, enabling sequence-specific DNA detection. (C) 2012 Elsevier B.V. All rights reserved.
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