A new selective colorimetric and fluorescent sensor for Hg(2+) and Cu(2+) based on a thiourea featuring a pyrene unit.
Talanta
; 81(4-5): 1209-15, 2010 Jun 15.
Article
em En
| MEDLINE
| ID: mdl-20441886
ABSTRACT
A new artificial receptor 1 was developed, and its chromogenic and fluorogenic behaviors toward various metal ions were investigated. Receptor 1 shows exclusively responses toward Hg(2+) and Cu(2+) ions. It selectively senses Hg(2+) and Cu(2+) ions through two different color changes in aqueous solution (DMSO/H(2)O=4/1) and also distinguishes them from other metal ions. In addition, receptor 1 also exhibits pronounced enhancements of the fluorescence, which can visually be discernible by an orchid fluorescence in the presence of Hg(2+) ions and a strong blue fluorescence in the presence of Cu(2+) ions.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tioureia
/
Colorimetria
/
Cobre
/
Mercúrio
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article