128071-98-7, Name is 4-Bromo-2-fluoropyridine, molecular formula is C5H3BrFN, belongs to pyridine-derivatives compound, is a common compound. In a patnet, author is Breuer, Natascha, once mentioned the new application about 128071-98-7, COA of Formula: C5H3BrFN.
Emission solvatochromic, solid-state and aggregation-induced emissive alpha-pyrones and emission-tuneable 1H-pyridines by Michael addition-cyclocondensation sequences
Starting from substituted alkynones, alpha-pyrones and/or 1H-pyridines were generated in a Michael addition-cyclocondensation with ethyl cyanoacetate. The peculiar product formation depends on the reaction conditions as well as on the electronic substitution pattern of the alkynone. While electron-donating groups furnish alpha-pyrones as main products, electron-withdrawing groups predominantly give the corresponding 1H-pyridines. Both heterocycle classes fluoresce in solution and in the solid state. In particular, dimethylamino-substituted alpha-pyrones, as donor-acceptor systems, display remarkable photophysical properties, such as strongly red-shifted absorption and emission maxima with daylight fluorescence and fluorescence quantum yields up to 99% in solution and around 11% in the solid state, as well as pronounced emission solvatochromism. Also a donor-substituted alpha-pyrone shows pronounced aggregation-induced emission enhancement.
We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, 128071-98-7. The above is the message from the blog manager. COA of Formula: C5H3BrFN.
Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem