Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 6, Issue 11, Pages 3048-3053Publisher
WILEY-BLACKWELL
DOI: 10.1002/asia.201100314
Keywords
alkylation; crossed molecular beam; energy transfer; naphthalene; supercollisions
Categories
Funding
- National Science Council Taiwan [NSC 97-2628M-001-011-MY3]
Ask authors/readers for more resources
The energy transfer of highly vibrationally excited isomers of dimethylnaphthalene and 2-ethylnaphthalene in collisions with krypton were investigated using crossed molecular beam/time-of-flight mass spectrometer/time-sliced velocity map ion imaging techniques at a collision energy of approximately 300 cm(-1). Angular-resolved energy-transfer distribution functions were obtained directly from the images of inelastic scattering. The results show that alkyl-substituted naphthalenes transfer more vibrational energy to translational energy than un-substituted naphthalene. Alkylation enhances the V -> T energy transfer in the range -Delta E(d) = -100 similar to-1500 cm(-1) by approximately a factor of 2. However, the maximum values of V -> T energy transfer for alkyl-substituted naphthalenes are about 1500 similar to 2000 cm(-1), which is similar to that of naphthalene. The lack of rotation-like wide-angle motion of the aromatic ring and no enhancement in very large V -> T energy transfer, like supercollisions, indicates that very large V -> T energy transfer requires special vibrational motions. This transfer cannot be achieved by the low-frequency vibrational motions of alkyl groups.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available