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Photopolymerization of C60 and Li@C60 studied by second-harmonic generation and infrared spectroscopy

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Abstract

The photopolymerization of C60 and Li@C60 films was investigated by means of optical second-harmonic generation. The films were deposited under ultra-high-vacuum conditions and irradiated in situ with an Ar+ laser at 514 nm. The second harmonic generated by a Nd:YAG laser working at 1064 nm was monitored after different steps of irradiation. Photopolymerization was observed after very low irradiation doses, of the order of 1020 photons/cm2, and confirmed with infrared absorption spectroscopy. Similar kinetics for C60 and Li@C60 were observed. The measurements give evidence for photopolymerization of the endohedral fullerene Li@C60.

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Authors and Affiliations

  1. Max Born Institute, Max-Born-Strasse 2A, 12489, Berlin, Germany

    C. Stanciu, R. Ehlich & I.V. Hertel

Authors
  1. C. Stanciu
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  2. R. Ehlich
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  3. I.V. Hertel
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Correspondence to C. Stanciu.

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PACS

78.30.Na; 82.50.Hp; 81.05.Tp

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Stanciu, C., Ehlich, R. & Hertel , I. Photopolymerization of C60 and Li@C60 studied by second-harmonic generation and infrared spectroscopy. Appl. Phys. A 79, 515–520 (2004). https://doi.org/10.1007/s00339-003-2371-6

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  • DOI: https://doi.org/10.1007/s00339-003-2371-6

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