Solvent-dependent dispersion stability of PTCDI-C13 nanoparticle colloids made by PLAL

Jeon, Hyeon‐Gu; Haramiishi, Shuya; Asahi, Tsuyoshi; Fujii, Masaharu; Ihori, Haruo

doi:10.35848/1347-4065/ac9d13

Cited by 1 publication

(1 citation statement)

References 26 publications

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“…The other absorption spectrum is dominated by the vibronic progression of the first π–π* S 0 → S 2 transition, with the 0–0 peak at 526 nm. The UV absorption spectrum of pure PTCDI-C 13 powder is highly similar to those of solution mixtures of dissolved PTCDI-C 13 , except for a slightly greater absorbance at a longer wavelength region, which might results from scattering by large particles . The XRD pattern in Figure c further displays reflection peaks at 3.6°, 6.79°, 10.08°, and 13.49°, which are assigned to (001), (002), (003), and (004) based on the crystal structure of PTCDI-C 13 .…”

Section: Results and Discussionmentioning

confidence: 83%

Organic Conjugated Small Molecules with High Thermal Conductivity as an Effective Coupling Layer for Heat Transfer

Liu,

Wang,

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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As the features of electronics are miniaturized, the need for interfacial thermal coupling layers to enhance their thermal transfer efficiency and improve device performance becomes critical. Organic conjugated small molecules possess a unique combination of periodic crystal structures and conjugated units with π electrons, resulting in notable thermal conductivities and molecular structure orientation that facilitates directed heat transfer. Nevertheless, there is a noticeable gap in literatures regarding the thermal properties of organic conjugated small molecules and their potential applications in nanoscale thermal management. Herein, we report the fabrication of high-quality thin films of organic conjugated small molecules. The result reveals that the 2D organic conjugated small molecule thin films exhibit a high cross-plane thermal conductivity of 3.2 W/m K. The increased thermal conductivity is attributed to the well-organized lattice structure and existence of π-electrons induced by conjugated systems. The studied conjugated small molecules engage in π–π stacking interactions with carbon materials and efficiently exchange energy with electrons in metals, promoting rapid interfacial heat transfer. These molecules act as coupling layers, significantly enhancing thermal transfer efficiency between graphite-based thermal pads and copper heat sinks. This pioneering research represents the inaugural investigation of the thermal performance of conjugated organic small molecules. These findings highlight the potential of conjugated small molecules as thermal coupling layers, offering tunable combinations of desirable properties.

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Section: Results and Discussionmentioning

confidence: 83%