Intercalator suitable for electrochemical detection of double strand DNAs and a process for preparing thereof
申请人:Mitocon Ltd.
公开号:US06809201B2
公开(公告)日:2004-10-26
The present invention relates to the compound of formula (I) useful as an intercalator in electrochemical detection of double-stranded DNAs, and a method for preparation thereof:
Linker effect of ferrocenylnaphthalene diimide ligands in the interaction with double stranded DNA
作者:Shinobu Sato、Shigeori Takenaka
DOI:10.1016/j.jorganchem.2008.01.011
日期:2008.4
Ferrocenylnaphthalene diimide ligands 1-7 were synthesized by joining a piperazino or N-methylamino linker of the naphthalene diimide skeleton with ferrocenecarboxylic, ferroceneacetic, or ferrocenepropionic parts. Their interaction with double stranded DNA (dsDNA) was studied kinetically and electrochemically. Association rate constants of these ligands were found to correlate with their intramolecular stacking ability between the ferrocene and naphthalene diimide planes: ligands which can adopt a stacked conformation in buffer solution were unfavorable in the association with dsDNA, resulting in a smaller association rate constant. Dissociation rate constants of these ligands carrying the bulky piperazino linker were smaller than that of those carrying an N-methylamino one. Binding constants were dictated by the balance of these two factors. These ligands were applied to the electrochemical detection of the amount of dsDNA on the electrode. Ligand 6 having the highest affinity for dsDNA gave rise to the largest current increase upon dsDNA formation in the electrochemical hybridization assay. (C) 2008 Elsevier B.V. All rights reserved.