期刊
ANALYTICAL LETTERS
卷 34, 期 15, 页码 2609-2619出版社
TAYLOR & FRANCIS INC
DOI: 10.1081/AL-100108408
关键词
surface plasmon resonance; calix[4]arene; metal ion
A wavelength interrogation surface plasmon resonance (SPR) sensor with gold substrate modified with calix[4]arene derivative as sensing film was used to detect metal ions in aqueous solutions. We found that only Ag+ and Cu2+ could be selectively detected with the detection limit Of 10(-7) mol/L and 10(-4) mol/L, respectively. XPS data confirmed the presence of Au-S bond between the calixarene derivative and the gold substrate and complexation between the calixarene derivative and Ag+ or Cu2+.
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