CAS 632-51-9: Tetraphenylethylene

1,1',1'',1'''-(1,2-Ethenediylidene)tetrakisbenzene (ETB) is a fluorescence probe used in transfection experiments. It has been shown to have good stability and high optical sensitivity. ETB can be excited at 350 nm and emits at 550 nm upon excitation. The hydrophobic effect of ETB is due to the presence of a hydroxyl group on the benzene ring that interacts with the fluorophore's electron cloud. The hydrogen bonding interactions between ETB molecules are what give it its strong fluorescence emission. Reaction solutions containing sodium salts are necessary for ETB to emit fluorescence because this reaction releases energy that can activate the molecule and cause it to emit light.

Tetraphenylethylene

Tetraphenylethylene is used in construction and in the manufacture of medical equipment, packaging, and electrical appliances. And it is used to produce other chemical like 1,1,2,2-Tetraphenyl-ethane. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.