Molecule of the Week:Lophine

"My solutions emit yellow light."-Lophine

IUPAC Name: 2,4,5-triphenyl-1H-imidazole

CAS Number: 484-47-9

Molecular Weight: 296.36514 [g/mol]

Molecular Formula: C21H16N2

Lophine (2,4,5-triphenyl-1H-imidazole) exhibits lemon yellow chemiluminescence in solution and is one of the few long-lasting chemiluminescent molecules.Chemiluminescence (sometimes "chemoluminescence") is the emission of light (luminescence) with limited emission of heat as the result of a chemical reaction.(wikipedia)

It forms dimers that have piezochromic and photochromic properties. It has been proposed as an analytical reagent for trace metal ion detection.

Lophine’s chemiluminescence was discovered by B. Radziszewski in 1877.

Detail chemistry of Lophine can be found at

More about molecule of the week @ ACS

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