Pinna, Alessandra and Malfatti, Luca and Piccinini, Massimo and Falcaro, Paolo and Innocenzi, Plinio (2012) Hybrid materials with an increased resistance to hard X-rays using fullerenes as radical sponges. Journal of Synchrotron Radiation, Vol. 19 (4), p. 586-590. ISSN 0909-0495. eISSN 1600-5775. Article.
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The protection of organic and hybrid organic–inorganic materials from X-ray damage is a fundamental technological issue for broadening the range of applications of these materials. In the present article it is shown that doping hybrid films with fullerenes C60 gives a significant reduction of damage upon exposure to hard X-rays generated by a synchrotron source. At low X-ray dose the fullerene molecules act as `radical scavengers', considerably reducing the degradation of organic species triggered by radical formation. At higher doses the gradual hydroxylation of the fullerenes converts C60 into fullerol and a bleaching of the radical sinking properties is observed.
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