Nano Archive

Photoisomerization of a fullerene dimer

Zhang, Jinying and Porfyrakis, Kyriakos and Morton, John J. L. and Sambrook, Mark R. and Harmer, Jeffrey and Xiao, Li and Ardavan, Arzhang and Briggs, G. Andrew D. (2008) Photoisomerization of a fullerene dimer. JOURNAL OF PHYSICAL CHEMISTRY C, 112 (8). pp. 2802-2804.

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A photo-switchable fullerene dimer and its analogous nitrogen endohedral species have been synthesized and characterized. Irradiation by ultraviolet and visible light has been used to switch between the trans and cis isomers of both the C-60- and N@C-60- based dimers. Environmental perturbations experienced by the encapsulated nitrogen atom upon switching between the two isomers in degassed carbon disulfide has been determined by pulse electron paramagnetic resonance. Both T-1 and T-2 electron spin relaxation times of the two isomers of the endohedral fullerene containing dimer revealed a biexponential decay. Although the zero field splitting parameter D-eff for both isomers in solution was similar, around 13.0 MHz, the molecular rotation correlation time tau(c) of the trans and cis isomers was calculated to be 37.2 +/- 1.6 and 34.8 +/- 2.7 ps, respectively.

Item Type:Article
Subjects:Physical Science > Nano objects
Material Science > Nanochemistry
ID Code:2883
Deposited By:Farnush Anwar
Deposited On:12 Jan 2009 17:37
Last Modified:12 Jan 2009 17:37

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