期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 292, 期 2-3, 页码 264-270出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2006.06.031
关键词
surface plasmon resonance; copper ions; 2-aminoethane thiolhydrochloride; 6-aminohexane thiothydrochloride; reusable sensor
Surface plasmon resonance (SPR) can be used to selectively detect Cu2+ in the range of 0.1 mu M to 1.0 mM with a reusable sensor surface, through appropriate pH control, using a relatively simple amino-terminated self-assembled monolayer (SAM) as a molecular recognition element. To detect Cu2+ ions in an aqueous solution using SPR, two types of SAMs, comprised of 2-aminoethane thiolhydrochloride (AET) and 6-aminohexane thiolhydrochloride (AHT), were used. Moreover the selectivity of two amino-terminated SAMs for Cu2+ ions, compared to Ni2+ and Zn2+, which are divalent and have similar ionic radii, was compared with SPR angle changes for each case. (c) 2006 Elsevier B.V. All rights reserved.
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