ISSN:
1572-8862
Keywords:
Fullerene
;
formation mechanism
;
carbon cluster
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract Experimental and theoretical studies focusing on the formation of carbon clusters are described. In the experiment on discharge in liquid chloroform, a series of perchlorinated fragments of C60 was synthesized and a scarce amount of C60 was detected. In the laser vaporization experiments, it was found that the production of C 60 + and other fullerene ions could be promoted by doping chlorine-containing compounds into carbon targets. Chlorine atoms were found to play key roles of not only tying up the dangling bonds of the polycyclic carbon clusters, but also catalyzing the formation of fullerenes. The results showed that C60 and other fullerenes are formed from growth of small carbon species and supported the “Pentagon Road” scheme of the fullerene formation mechanism. On the other hand, ab initio calculations were carried out on formation reactions of C60 from its various perchlorinated fragments, C60−2mCl10. The monotonically decreasing calculated energies of reactions with growing size of the fragments confirm that the formation reaction is energetically favorable.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1022625009704
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