Formation of C H Ablation of Graphite, Coal or C Particles Suspended in Selected Solvents - Polyynes: Synthesis, Properties, and Applications - page 132

FIGURE 7.6 Absorbances of C n H 2 polyynes after 266, 355, 532, and 1064 nm laser
irradiation on graphite particles in benzene, toluene, hexane, cyclohexane, or
methanol solution for 60min.

In all solvents, absorbances of C 2n H 2 polyynes from graphite are largest
at n 4 and decreased with increasing n from 4 to 8. There are no significant

differences among the absorbances of n

¼

4 and 5 polyynes from aromatic
and aliphatic hydrocarbons and methanol at 355 and 532 nm laser irradi-
ation. However, absorbances of n

¼

6-8 polyynes from aromatic hydro-
carbons are larger than those from hexane, cyclohexane, and methanol.

¼