Iodine-mediated high-pressure high-temperature carbonization of hydrocarbons and synthesis of nanodiamonds

Size-Dependent Thermal Stability and Optical Properties of Ultra-Small Nanodiamonds Synthesized under High Pressure

“…Recent breakthroughs in nanodiamond synthesis in halogenated hydrocarbon systems at high static pressures (HPHT) enabled precise control of the ND size and made possible the growth of nanodiamonds with desired dimensions starting from values as small as 1 nm [ 17 , 18 , 19 , 20 , 21 ]. This provides an excellent opportunity for the refinement of thermal, structural, optical, and other properties of diamond on the ultra-small scale, which is important for the understanding and revealing of their prospects in future quantum and biomedical technologies.…”

“…In the current paper we present a study of the size-dependent thermal stability/graphitization and optical properties of nanodiamonds synthesized in the growth medium comprising C-H-Cl. A distinguishing feature of nanodiamonds produced by this approach is their surface hydrogenation [ 17 , 20 , 21 ]. We propose that, contrary to the recently published preprint [ 22 ], the surface of the ultra-small nanodiamonds grown from hydrocarbon precursor is largely H-free, is reconstructed, and consists of contiguous network of sp hybridized carbons with patches of sp hydrogenated surface carbon atoms.…”

Synthesis and Structural Properties of Adamantane‐Substituted Amines and Amides Containing an Additional Adamantane, Azaadamantane or Diamantane Moiety

“…[1] There is a growing interest in materials chemistry in the use of diamondoids for diamond formation, which is an area of research that we are focused on. In recent years, it has been shown that diamondoids such as adamantane, [3][4][5][6][7] (poly)haloadamantanes, [8][9][10] azaadamantanes, [11] adamantane carbonitrile [7] or pentamantane [12] can be used as precursors or seeds of nanodiamonds under high-pressure high-temperature conditions (HPHT synthesis) and for chemical vapor deposition methods (CVD synthesis). The presence of color centers in (nano)diamonds is responsible for their fluorescence properties, which are exploited for biomedical applications and quantum technologies such as nanoscale magnetometry, in-cell thermometry, spin cartography and qubit engineering.…”

Size-dependent thermal stability and optical properties of ultra-small nanodiamonds synthesized under high pressure

“…Recent breakthrough in nanodiamond synthesis in halogenated hydrocarbon systems at high static pressures (HPHT) enabled precise control of the ND size and made possible growth of nanodiamonds with desired dimensions starting from values as small as 1 nm [17][18][19][20][21] . This provide an excellent opportunity for refinement of thermal, structural, optical, and other properties of diamond on the ultra-small scale, which is important for the understanding and revealing their prospects in future quantum and biomedical technologies.…”

“…In the current paper we present study of the size-dependent thermal stability/graphitization and optical properties of nanodiamonds synthesized in the growth medium comprising C-H-Cl. A distinguishing feature of nanodiamonds produced by this approach is their surface hydrogenation 17,20,21 . We propose that, contrary to the recently published preprint 22 , the surface of the ultrasmall nanodiamonds grown from hydrocarbon precursor is largely H-free, is reconstructed and consists of contiguous network of sp 2 hybridized carbons with patches of sp 3 hydrogenated surface carbon atoms.…”