Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features

@article{Kwok2011MixedAO,
  title={Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features},
  author={S. Kwok and Y. Zhang},
  journal={Nature},
  year={2011},
  volume={479},
  pages={80-83}
}
Unidentified infrared emission bands at wavelengths of 3–20 micrometres are widely observed in a range of environments in our Galaxy and in others. Some features have been identified as the stretching and bending modes of aromatic compounds, and are commonly attributed to polycyclic aromatic hydrocarbon molecules. The central argument supporting this attribution is that single-photon excitation of the molecule can account for the unidentified infrared emission features observed in ‘cirrus… Expand
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On the aliphatic versus aromatic content of the carriers of the ‘unidentified’ infrared emission features
Although it is generally accepted that the so-called "unidentified" infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 micrometer are characteristic of the stretching and bending… Expand
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The unidentified infrared emission (UIE) phenomenon consists of a family of emission bands and broad emission plateaus superimposed on an underlying continuum. The most popular explanation for the… Expand
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Abstract The unidentified infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, 11.3 and 12.7  µ m are ubiquitously seen in a wide variety of astrophysical regions in the Milky Way and nearby… Expand
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The mid-infrared (mid-IR; 5–15 μm) spectrum of a wide variety of astronomical objects exhibits a set of broad emission features at 6.2, 7.7, 8.6, 11.3, and 12.7 μm. About 30 years ago it was proposed… Expand
The 217.5 nm Band, Infrared Absorption, and Infrared Emission Features in Hydrogenated Amorphous Carbon Nanoparticles
We report on the preparation of hydrogenated amorphous carbon nanoparticles whose spectral characteristics include an absorption band at 217.5 nm with the profile and characteristics of the… Expand
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