Fullerenes as a co-catalyst for high pressure – high temperature synthesis of diamonds

Features of self-aggregation of C 60 molecules in toluene prepared by different methods

“…The most probable mechanism of stability of C 60 fullerene aggregate/C 60 fullerene in water, regardless of the method of preparation of C 60 fullerene solution is the surface hydroxylation of C 60 molecules [4]. Fullerene C 60 has high lipophilicity [5], and is extremely valuable for innovative applications in medicine [6][7][8][9][10], chemical synthesis [11], catalysis [12], pharmacology [13], biomedical testing [14], electronics [15], solar energy [16] and optics [17][18][19]. C 60 fullerene is a nontoxic substance [20], having powerful antioxidant properties due to its high activity as free radicals acceptor [21].…”

21 Fullerenes

“…12 The addition of [60]-, [70]fullerenes or fullerene soot, as well as a common metal catalyst, increases the diamond yield from graphite under high-pressure and high temperature conditions. 13 Hard, graphitic, amorphous carbon rich materials with a range of properties have been prepared by reacting [60]fullerene with elemental phosphorus at temperatures between 650 and 950 uC. 14 Electrophoretic deposition of [60]fullerene using porous anodic aluminium oxide membranes as templates has been used to prepare electrically conducting one-dimensional carbon nanowires after annealing at 523 K or 673 K. 15 The Kondo effect at temperatures exceeding 50 K has been observed in single molecule [60]fullerene transistors fabricated using an electromigration technique.…”

Магнитные Свойства Легированных Натрием Композитов Типа Фуллерен-Терморасширенный Графит

“…С дальнейшим ростом температуры и давления получаются аморфизированные графитоподобные (s p 2 ) и алмазоподобные (s p 3 ) углеродные структуры, вплоть до технических алмазов различных типов, которые, как правило, синтезируют в присутствии металлических примесей-катализаторов (обычно группы железа) [5]. При синтезе по технологии НРНТ алмазов из графита фуллерены используются как сокатализатор фазового перехода графит−алмаз [8].…”