A highly sensitive fluorescent sensor for Zn2+ based on diarylethene with an imidazole unit.
Spectrochim Acta A Mol Biomol Spectrosc
; 205: 21-28, 2018 Dec 05.
Article
in En
| MEDLINE
| ID: mdl-30007898
ABSTRACT
A new sensitive sensor for Zn2+ based on diarylethene with an imidazole unit has been synthesized. Its photochromic and fluorescent behaviors have been systematically investigated by the stimulation of UV/vis lights and Zn2+ ion in THF solution. It displayed a dual-mode with a "turn on" fluorescence and color response to Zn2+. With the addition of Zn2+, the emission intensity enhanced 26-fold, accompanied by the fluorescent color changed from dark red to bright yellow. The 11 stoichiometry between the sensor and Zn2+ was verified by Job's plot and MS. The LOD for Zn2+ was determined to be 6.12â¯×â¯10-9â¯molâ¯L-1. Furthermore, a logic circuit was designed by using the fluorescence at 578â¯nm as output and the combinational stimuli of UV/vis and Zn2+/EDTA as inputs.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Type of study:
Diagnostic_studies
Language:
En
Journal:
Spectrochim Acta A Mol Biomol Spectrosc
Journal subject:
BIOLOGIA MOLECULAR
Year:
2018
Document type:
Article