Butyl PBD or b-PBD (short for butyl-phenyl-bipheny-oxydiazole[1]) is a fluorescent organic compound used in the Liquid Scintillator Neutrino Detector (LSND) at Los Alamos National Laboratory, USA.[1]
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Preferred IUPAC name
2-([1,1′-Biphenyl]-4-yl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole | |
Other names
2-(4-tert-Butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole
2-(4-Biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole | |
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ECHA InfoCard | 100.035.563 |
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Properties | |
C24H22N2O | |
Molar mass | 354.44 g mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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The fluorescent emission of b-PBD is at λem = 364 nm for excitation at λex = 305 nm (in ethanol solution).[2] As a scintillant in the LSND, it was used at a concentration of 31 mg/L (87 μmol/L) dissolved in mineral oil.[1]