Does anyone know a reliable PPy HOMO and LUMO positions vs. absolute vacuum scale? I have some data 5 eV for HOMO, 2.45 eV (dedoped) and 3.3 eV (doped) for LUMO. Is it correct, and are they pH dependent?
If I searched it right, I fear that that I have found a different result. Hoping to be excused if proved wrong.
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Polypyrrole HOMO and LUMO positions vs. absolute vacuum scale
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1. [PDF]
View - Max-Planck-Gesellschaft
w0.rz-berlin.mpg.de/hjfdb/pdf/57e.pdf
by J Fink - 1986 - Cited by 50 - Related articles
Jul 15, 1986 - dielectric functions of electrochemically reduced polypyrrole films are well described ... tors or donors to yield highly electrically conducting ma-.
Physical Reviews B, vo.34; Number.2. 1101-1115 (1986)
Pls look in: Page:1107- the paragraph at the bottom.
[A]HOMO-LUMO energy difference is appxo 5ev in monomeric PPY.
[B] There appears shoulders between 4.5-5.5 eV due to excitation from the second OCCUPIED π State below the Fermi level to LUMO and from the HOMO to the second lowest unoccupied level.
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