2,5-Diphenyloxazole: Difference between revisions
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| ImageFile=PPO_chem.png |
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| PIN=2,5-Diphenyl-1,3-oxazole |
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| IUPACName=2,5-Diphenyloxazole |
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| OtherNames=PPO, DPO, POP |
| OtherNames=PPO, DPO, POP |
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|Section1={{Chembox Identifiers |
|Section1={{Chembox Identifiers |
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| CASNo_Ref = {{cascite|correct|CAS}} |
| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo=92-71-7 |
| CASNo=92-71-7 |
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| UNII_Ref = {{fdacite|correct|FDA}} |
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| UNII = 2P8A647RYF |
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| PubChem=7105 |
| PubChem=7105 |
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|Section2={{Chembox Properties |
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| C=15|H=11|N=1|O=1 |
| C=15|H=11|N=1|O=1 |
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| Appearance= |
| Appearance= greenish powder |
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| Density=1.094 g/cm<sup>3</sup> (100 °C)<ref name=crc/> |
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| Density= |
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| RefractIndex = 1.6231 (100 °C)<ref name=crc/> |
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| MeltingPtC=71 |
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| MeltingPt_ref =<ref name=crc>{{cite book | editor= Haynes, William M. | date = 2016| title = [[CRC Handbook of Chemistry and Physics]] | edition = 97th | publisher = [[CRC Press]] | isbn = 9781498754293|page=3.232}}</ref> |
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| BoilingPtC=360 |
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'''2,5-Diphenyloxazole''' ('''PPO''') is an organic [[scintillator]]. It is used as a wavelength shifter (also called a "primary shifter" or "fluor"), which means that it converts shorter wavelength light to longer wavelength light. Its output spectrum peaks at 385 nm, which is in the range of [[UV light]]. |
'''2,5-Diphenyloxazole''' ('''PPO''') is an organic [[scintillator]].<ref>{{Cite journal | doi = 10.1002/chem.201404093 | pmid = 25335882 | title = Current Status on Plastic Scintillators Modifications | journal = Chemistry - A European Journal | volume = 20 | issue = 48 | pages = 15660–15685 | year = 2014 | last1 = Bertrand | first1 = Guillaume H. V. | last2 = Hamel | first2 = Matthieu | last3 = Sguerra | first3 = Fabien }}</ref> It is used as a wavelength shifter (also called a "primary shifter" or "fluor"), which means that it converts shorter wavelength light to longer wavelength light. Its output spectrum peaks at 385 nm, which is in the range of [[UV light]]. |
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== Latest measurements == |
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The properties of PPO were measured by Cosmic Rays and Particle group at [[Nazarbayev University]]. The PPO was dissolved in [[1,2,4-trimethylbenzene]] (PC or pseudocumene) and tested using the [[Agilent]] Cary Eclipse [[spectrophotometer]]. This is part of the ongoing work and once its published, the reference will be provided. Right now, raw plots with watermark are being uploaded so that there is any data available. |
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=== Excitation === |
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The PPO fluorescence is being excited using wavelength from 190 nm to 370 nm. Fluorescence is monitored at 385 nm. |
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[[File:PPO-ex.png|thumbnail|center|Excitation of PPO with fluorescence measured at fixed wavelength (385 nm)]] |
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=== Fluorescence === |
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The fluorescence spectrum is shown. The PPO being excited at 280 nm (first peak). Can clearly observe the emission peak at 385 nm. |
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[[File:PPO.png|thumbnail|center|Emission spectrum of PPO excited at 280 nm]] |
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== References == |
== References == |
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{{reflist}} |
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{{Unreferenced|date=November 2015}} |
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{{DEFAULTSORT:Diphenyloxazole, 2,5-}} |
{{DEFAULTSORT:Diphenyloxazole, 2,5-}} |
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Latest revision as of 04:43, 9 September 2022
| |
| Names | |
|---|---|
| Preferred IUPAC name
2,5-Diphenyl-1,3-oxazole | |
| Other names
PPO, DPO, POP
| |
| Identifiers | |
| ChemSpider | |
| ECHA InfoCard | 100.001.984 |
| EC Number |
|
PubChem CID
|
|
| UNII | |
CompTox Dashboard (EPA)
|
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| Properties | |
| C15H11NO | |
| Molar mass | 221.259 g·mol−1 |
| Appearance | greenish powder |
| Density | 1.094 g/cm3 (100 °C)[1] |
| Melting point | 71 °C (160 °F; 344 K)[1] |
| Boiling point | 360 °C (680 °F; 633 K)[1] |
Refractive index (nD)
|
1.6231 (100 °C)[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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2,5-Diphenyloxazole (PPO) is an organic scintillator.[2] It is used as a wavelength shifter (also called a "primary shifter" or "fluor"), which means that it converts shorter wavelength light to longer wavelength light. Its output spectrum peaks at 385 nm, which is in the range of UV light.
References
[edit]- ^ a b c d Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 3.232. ISBN 9781498754293.
- ^ Bertrand, Guillaume H. V.; Hamel, Matthieu; Sguerra, Fabien (2014). "Current Status on Plastic Scintillators Modifications". Chemistry - A European Journal. 20 (48): 15660–15685. doi:10.1002/chem.201404093. PMID 25335882.