A self-assembled squarylium dye monolayer for the detection of metal ions by surface plasmon resonances

Citation
Sh. Kim et al., A self-assembled squarylium dye monolayer for the detection of metal ions by surface plasmon resonances, DYE PIGMENT, 44(1), 1999, pp. 55-61
Citations number
25
Categorie Soggetti
Chemical Engineering
Journal title
DYES AND PIGMENTS
ISSN journal
01437208 → ACNP
Volume
44
Issue
1
Year of publication
1999
Pages
55 - 61
Database
ISI
SICI code
0143-7208(199912)44:1<55:ASSDMF>2.0.ZU;2-N
Abstract
Self-assembly of a squarylium dye containing an alkanethiol substituent on a gold surface is described. The self-assembled monolayers (SAMs) obtained were investigated by contact angle measurement and atomic force microscopy (AFM). Surface plasmon resonance (SPR) has been employed to investigate the interaction of the squarylium dye monolayer on gold with metal ions. A hig hly Cu2+ selective SPR sensing system was demonstrated with SAM for the squ arylium dye on gold. (C) 1999 Elsevier Science Ltd. All rights reserved.