Isomeric identification of polycyclic aromatic hydrocarbons formed in combustion with tunable vacuum ultraviolet photoionization

2006 ◽  
Vol 77 (8) ◽  
pp. 084101 ◽  
Author(s):  
Fei Qi ◽  
Rui Yang ◽  
Bin Yang ◽  
Chaoqun Huang ◽  
Lixia Wei ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Vacuum Ultraviolet ◽  
Polycyclic Aromatic

scholarly journals An experimental study of indene pyrolysis with synchrotron vacuum ultraviolet photoionization mass spectrometry

2019 ◽  
Vol 21 (10) ◽  
pp. 5510-5520 ◽  
Author(s):  
Hanfeng Jin ◽  
Jiuzhong Yang ◽  
Lili Xing ◽  
Junyu Hao ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Experimental Study ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Vacuum Ultraviolet ◽  
Photoionization Mass Spectrometry ◽  
Polycyclic Aromatic

Formation of polycyclic aromatic hydrocarbons driven by indenyl reactions is experimentally measured by synchrotron vacuum ultraviolet photoionization mass spectrometry.

Detection of Polycyclic Aromatic Hydrocarbons in a Soil Sample with Photon Ionization Technique

2012 ◽  
Vol 271-272 ◽  
pp. 112-115
Author(s):  
A Dan Li ◽  
Min Zi Chen ◽  
Wen Feng Guo ◽  
Ralf Zimmermann
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Soil Sample ◽  
Aromatic Hydrocarbons ◽  
Vacuum Ultraviolet ◽  
Single Photon ◽  
Rare Gas ◽  
Line Measurement ◽  
Polycyclic Aromatic ◽  
On Line ◽  
Photon Ionization

An electron beam pumped rare gas excimer lamp (EBEL) was utilized to emit the intensive vacuum ultraviolet (VUV) radiation at 126 nm for soft single photon ionization (SPI) of polycyclic aromatic hydrocarbons (PAHs) in a soil sample. The VUV light source was coupled to a compact and mobile time-of-flight mass spectrometer (TOFMS) for the on-line measurement of PAHs. The moderate desorption temperature was set at 300 °C to guarantee the rapid evaporation of the PAHs in the soil sample and without decomposition from the larger molecules. With the thermal treatment, sample extraction and cleanup steps were not needed. The system developed herein was found to perform sufficiently well to evaluate the PAHs in the environmental soil sample at ppm level.

Copper(i)-based oxidation of polycyclic aromatic hydrocarbons and product elucidation using vacuum ultraviolet spectroscopy and theoretical spectral calculations

2018 ◽  
Vol 42 (24) ◽  
pp. 19442-19449 ◽  
Author(s):  
Tharun T. Ponduru ◽  
Changling Qiu ◽  
James X. Mao ◽  
Allegra Leghissa ◽  
Jonathan Smuts ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Vacuum Ultraviolet ◽  
Ultraviolet Spectroscopy ◽  
Mild Conditions ◽  
Polycyclic Aromatic ◽  
Vacuum Ultraviolet Spectroscopy

Fluorinated 1,3,5-triazapentadienyl complexes of copper catalyze the oxidation PAHs to quinones using H2O2as an oxidant under mild conditions.

scholarly journals Photoprocessing of large PAH cations

2019 ◽  
Vol 15 (S350) ◽  
pp. 388-389
Author(s):  
Gabi Wenzel ◽  
Sarah Rodriguez Castillo ◽  
Giacomo Mulas ◽  
Ming-Chao Ji ◽  
Anthony Bonnamy ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Cross Sections ◽  
Aromatic Hydrocarbons ◽  
Vacuum Ultraviolet ◽  
Young Stars ◽  
Radiative Cooling ◽  
Td Dft ◽  
Polycyclic Aromatic ◽  
Synchrotron Light

AbstractIn cosmic environments, polycyclic aromatic hydrocarbons (PAHs) strongly interact with vacuum ultraviolet (VUV) photons emitted by young stars. Trapped PAH cations ranging in size from 30 to 48 carbon atoms were irradiated by tunable synchrotron light (DESIRS beamline at SOLEIL). Their ionization and dissociation cross sections were determined and compared with TD-DFT computed photoabsorption cross sections. Evidence for radiative cooling is reported.

The Assessment of Contamination and Source of Polycyclic Aromatic Hydrocarbons from the Sediments of the Someş River

2019 ◽  
Vol 64 (1) ◽  
pp. 55-67
Author(s):  
Vlad Pӑnescu ◽  
◽  
Mihaela Cӑtӑlina Herghelegiu ◽  
Sorin Pop ◽  
Mircea Anton ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

1,1’-Biaceanthrylene and 2,2'-Biaceanthrylene: Models for Linking Larger Polycyclic Aromatic Hydrocarbons via Five-Membered Rings

2019 ◽  
Author(s):  
Yachu Du ◽  
Kyle Plunkett
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Electronic Properties ◽  
Aromatic Hydrocarbons ◽  
Model Systems ◽  
Redox Potentials ◽  
Dimer Model ◽  
Optical And Electronic Properties ◽  
Polycyclic Aromatic

We show that polycyclic aromatic hydrocarbon (PAH) chromophores that are linked between two five-membered rings can access planarized structures with reduced optical gaps and redox potentials. Two aceanthrylene chromophores were connected into dimer model systems with the chromophores either projected outward (2,2’-biaceanthrylene) or inward (1,1’-biaceanthrylene) and the optical and electronic properties were compared. Only the planar 2,2’-biaceanthrylene system showed significant reductions of the optical gaps (1 eV) and redox potentials in relation to the aceanthrylene monomer.<br>

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