The effect of molecular structure of organic compound on direct high-pressure synthesis of boron-doped nanodiamondsстатья
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Дата последнего поиска статьи во внешних источниках: 30 декабря 2016 г.
Аннотация:Evolution of crystalline phases with temperature has been
studied in materials produced by high-pressure hightemperature
treatment of 9-Borabicyclo [3.3.1] nonane
dimer (9BBN), Triphenylborane and Trimesitylborane.
The boron-doped diamond nanoparticles with a size
below 10 nm were obtained at 8-9 GPa and temperatures
970-1250 ºC from 9BBN only. Bridged structure and the
presence of boron atom in the carbon cycle of 9BBN
were revealed to be a key point for the direct synthesis of
doped diamond nanocrystals. The diffusional
transformation of the disordered carbon phase is
suggested to be the main mechanism of the nanodiamond
formation from 9BBN in the temperature range of 970-
1400 ºC. Aqueous suspensions of primary boron-doped
diamond nanocrystals were prepared upon removal of
non-diamond phases that opens wide opportunities for
application of this new nanomaterial in electronics and
biotechnologies.