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While high storage stability of sequence-selective DNA biosensors is crucial towards their routine applications, commonly used electrochemical hybridization biosensors are characterized with limited storage stability. In this article we demonstrate that recently developed ternary thiolated monolayers impart dramatic improvement in the storage stability of DNA electrochemical biosensors. In particular,...
The development of rapid, low-cost and reliable diagnostic methods is crucial for the identification and treatment of many diseases. Screen-printed gold electrodes (Au/SPEs), coated with a ternary monolayer interface, involving hexanedithiol (HDT), a specific thiolated capture probe (SHCP), and 6-mercapto-1 hexanol (MCH) (SHCP/HDT/MCH) are shown here to offer direct and sensitive detection of nucleic...
Detection of specific DNA sequences in clinical samples is a key goal of studies on DNA biosensors and gene chips. Herein we present a highly sensitive electrochemical genosensor for direct measurements of specific DNA sequences in undiluted and untreated human serum and urine samples. Such genosensing relies on a new ternary interface involving hexanedithiol (HDT) co-immobilized with the thiolated...
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