9,10-Bis(phenylethynyl)anthracene

9,10-Bis(phenylethynyl)anthracene (BPEA) is an aromatic hydrocarbon with the chemical formula is C₃₀H₁₈. It displays strong fluorescence and is used as a chemiluminescent fluorophore with high quantum efficiency.

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It is used in lightsticks as a fluorophor producing ghostly green light. It is also used as a dopant for organic semiconductors in OLEDs.

The emission wavelength can be lowered by substituting the anthracene core by halogens or alkyls. 2-ethyl and 1,2-dimethyl substituted BPEAs are also in use.

• 1-chloro-9,10-bis(phenylethynyl)anthracene emits yellow-green light, used in 30-minute high-intensity Cyalume sticks
• 2-chloro-9,10-bis(phenylethynyl)anthracene emits green light, used in 12-hour low-intensity Cyalume sticks

See also

• Lightstick
• Organic light-emitting diode
• 5,12-Bis(phenylethynyl)naphthacene