Hong, Younggi; Goh, Munju published the artcile< Pressure Dependence on the Thermal Conductivity of H- and J-type Nanocomposites>, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is biphenyl carbonitrile boron nitride epoxy nanocomposite thermal optical property.
The dependence of thermal conductivity on molding pressure in composites containing H- and J-type aggregation mols. is investigated for the first time. When mixed with hexagonal boron nitride (h-BN), small mols. capable of H- and J-aggregation significantly affect the orientation of h-BN under pressure, resulting in a substantial pressure dependence. For demonstration, 4′,4”’-(1,2-diphenylethylene-1,2-diyl)bis{(1,1′-biphenyl)-4-carbonitrile} (TPE-2CP) and 4′,4”’,4””’,4”””’-(ethene-1,1,2,2-tetrayl)tetrakis[{(1,1′-biphenyl)-4-carbonitrile}] (TPE-4CP) are synthesized, which exhibit H- and J-aggregation, resp. Furthermore, epoxy (EP) composites containing TPE-2CP or TPE-4CP are prepared, which show different aggregation states with changing pressure. As the pressure increases, the thermal conductivity gradually increases in the radial direction and decreases in the axial direction for TPE-4CP/EP (and vice versa for TPE-2CP/EP, but to a lesser extent). Consequently, the pressure dependence of composites with h-BN as a filler to TPE-4CP/EP is also examined The radial thermal conductivity of this h-BN/TPE-4CP/EP composite increases from 0.8888 W mK-1 at 10 MPa to 1.0062 W mK-1 at 50 MPa. The reasons for the appearance of aggregation states and changes in the thermal conductivity with increasing pressure are then discussed.
Advanced Materials Interfaces published new progress about Aggregation. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Recommanded Product: 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary