DNA-modified electrodes - Part 3: spectroscopic characterization of DNA-modified gold electrodes

Citation
Yd. Zhao et al., DNA-modified electrodes - Part 3: spectroscopic characterization of DNA-modified gold electrodes, ANALYT CHIM, 388(1-2), 1999, pp. 93-101
Citations number
28
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICA CHIMICA ACTA
ISSN journal
00032670 → ACNP
Volume
388
Issue
1-2
Year of publication
1999
Pages
93 - 101
Database
ISI
SICI code
0003-2670(19990503)388:1-2<93:DE-P3S>2.0.ZU;2-6
Abstract
DNA-modified gold electrodes were characterized by scanning tunneling micro scopy (STM), Raman spectroscopy, in situ UV/Vis reflection spectroscopy, X- ray photoelectron spectroscopy (XPS) and alternating current (AC) impedance . It has been found that dsDNA adsorbed firmly on gold surfaces lies strand -on in an ordered saturated monolayer, and ssDNA strands exist in a honeyco mb-like form on the surfaces. The bases and phosphate groups of DNA backbon e interacting with gold electrode surfaces play an important role in DNA im mobilization onto gold electrode surfaces. (C) 1999 Elsevier Science B.V. A ll rights reserved.