science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: perylene cation				Other Names: 

Formula: C20H12+					CAS-No.: 

Study: uv transitions


Authors: X.D.F. Chillier, B.M. Stone, F. Salama, L.J. Allamandola

Title: First detection of an ultraviolet transition in an ionized polycyclic aromatic hydrocarbon

Journal/Source: J. Chem. Phys., 111, 449 - 451, (1999); DOI:10.1063/1.479323 


Data: diagram

Energy/Wavelength range: ~ 500 - 800 nm

Resolution: ~ 0.3 nm

Temperature: 

Temperature dependence: 

Pressure/Concentration: 

Phase:

pH:


Comments: Compared to the neutral band peaks, which fall at 241 +- 0.3 nm and 248 +- 0.3 nm, the ion peaks are redshifted by 510 
and 355 cm-1, respectively.
The strongest absorption band of the C20H12 cation falls at 535 +- 0.3 nm. The transition, which falls at 730 nm and is considerably 
weaker, shows substructure (728, 733 and minor features).

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