Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 19847-12-2, Name is Pyrazinecarbonitrile, molecular formula is C5H3N3. In an article, author is Shi, Fu,once mentioned of 19847-12-2, SDS of cas: 19847-12-2.
A high selective fluorescent sensor for Cu2+ in solution and test paper strips
A novel and efficient fluorescent sensor with a pyrazine triphenylamine unit was developed. The sensor exhibits large Stokes shift (216 nm) due to the excited-state intramolecular proton transfer (ESIPT) process. After complexing with Cu2+, the ESIPT process was blocked and the fluorescence of the sensor was quenched. Job’s plot and ESI-MS results indicated that the stoichiometric ratio between the sensor and Cu2+ was 1:1. The detection limit was determined to be 2.47 x 10(-8) mol L-1. The sensor could be used to detect Cu2+ in practical samples with high accuracy. Furthermore, the sensor also could be made into test paper strips for the qualitative and quantitative detection of Cu2+.
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