Imidazolylmethylpyrene sensor for dual optical detection of explosive chemical: 2,4,6-Trinitrophenol
| Autor: | Vuthichai Ervithayasuporn, Manlika Masik, Chomchai Suksai, Sujittra Youngme, Sarayut Watchasit, Nantanit Wanichacheva, Rapheepraew Sodkhomkhum, Jaursup Boonmak |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Explosive material
Chromogenic Metals and Alloys Picric acid 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences Fluorescence Toluene 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Materials Chemistry Molecule Electrical and Electronic Engineering 0210 nano-technology Acetonitrile Host–guest chemistry Instrumentation |
| Zdroj: | Sensors and Actuators B: Chemical. 245:665-673 |
| ISSN: | 0925-4005 |
| Popis: | Fluorescence and colorimetric sensor with simplistic synthesis method based on 1-imidazolylmethylpyrene (IMPY) was found to be a specific recognition for an explosive chemical: 2,4,6-trinitrophenol or picric acid (PA). The sensor did not only provide highly sensitive OFF–ON fluorescence enhancement toward PA in acetonitrile, but also offered ON–OFF fluorescence quenching upon PA binding in toluene solution. In addition, the sensor IMPY provided high selectivity to 2,4,6-trinitrophenol and was shown to discriminate various phenolic compounds such as p-iodophenol, p-bromophenol, m-hydroxybenzaldehyde, o-nitrophenol, m-nitrophenol, p-nitrophenol and 2,4-dinitrophenol. Upon binding to PA, the fluorogenic change of the sensor were observed and accompanied by the noticeable chromogenic change from colorless to yellow, therefore the sensor could also serve as a “naked-eye” indicator. Finally, two different types of crystal structures of IMPY·PA complexes were successfully recrystallized and characterized, which confirmed highly interactive affinity of the host-guest molecules. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect