Bromination of [60]Fullerene. I. High‐Yield Synthesis of C₆₀Br _x (x=6, 8, 24)

Fullerene C60, Graphene-Oxide and Graphene-Oxide Foil with Fullerene and their Bromination

“…In the temperature interval 213 -222°C the weight loss was 44% (Fig. 15) and for C 60 Br [14][15][16][17][18] in the temperature interval 126 -188°C the weight loss was 56% (Fig. 5).…”

“…C 60 Br 24 -2 levels of decomposition at 45°C and 170°C [16] C 60 Br 24 -at 100°C the beginning, the maximum at 162°C [17][18] C 60 Br 24 -at 90°C [14] C 60 Br 8 -at 70°C -the beginning of decomposition [14] The pressure of developed gases released by decomposition of C 60 Br 6 was measured [17] and based on the obtained values the authors assumed gradual decomposition with partial maximums at 138°C, 175°C and 204°C while in the temperature interval 90-187°C 1 atom of bromine will be released from the cyclopentane circle and cyclopentadienyl radical will operate as an intermediate stage of the decomposition. Then 5 remaining atoms of bromine are expected to be released.…”

“…There is a number of publications relating to halogen derivatives of fullerenes [13][14][15][16][17][18][19][20] and describing preparation and identification of bromo and chloro derivatives of fullerenes C 60 . The content of bromine in C 60 Br n is defined in the range 2 < n < 24 depending on the reaction conditions (direct contact with bromine, reaction in a solvent, reaction time and temperature, etc.…”

“…The average composition of the product was determined by elemental analysis and by surface analysis as C 60 Br [14][15][16][17][18] Fig. 3, the strongest of which is 844 cm -1 and it corresponds to the published data of the strongest vibrations for the bond C-Br.…”

“…A direct reaction with liquid bromine was used to prepare bromofullerene C 60 Br [14][15][16][17][18] . The brominated derivative reacted with previously prepared graphene-oxide (hereinafter GO), according to a method described by Hummer.…”