Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan.
Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawacughi-shi, Saitama, 332-0012, Japan.
Sci Rep. 2018 Apr 3;8(1):5412. doi: 10.1038/s41598-018-23102-1.
Organic polymers are generally regarded as thermal insulators because amorphous arrangement of molecular chains reduces the mean free path of heat-conducting phonons. However, recent studies indicated that single chains of polymers with highly oriented structures could have high thermal conductivity than bulk polymers because stretched polymer chains effectively conduct phonons through polymeric covalent bonds. Here, we demonstrated the possibility of non-covalent virus assembly prepared by simple flow-induced methods toward high thermal conductive polymeric materials. Films with high thermal diffusivity composed of non-covalent bond-based assemblies of liquid crystalline filamentous viruses were prepared using a simple flow-induced orientation method. Structural and thermal characterization demonstrated that highly oriented structures of the viruses in the film were attributed to the high thermal diffusivity. Our results will open attractive opportunities for biomolecular-based thermally conductive soft materials even though the assemblies are based on non-covalent bonds.
有机聚合物通常被认为是热绝缘体，因为分子链的无定形排列降低了导热声子的平均自由程。然而，最近的研究表明，具有高度取向结构的聚合物单链可能具有比块状聚合物更高的热导率，因为拉伸的聚合物链通过聚合共价键有效地传导声子。在这里，我们通过简单的流动诱导方法展示了非共价病毒组装用于制备高热导聚合物材料的可能性。使用简单的流动诱导取向方法制备了由基于液晶丝状病毒的非共价键组装而成的具有高热扩散率的薄膜。结构和热特性表明，薄膜中病毒的高度取向结构归因于高热扩散率。尽管组装是基于非共价键，但我们的结果将为基于生物分子的导热软材料开辟有吸引力的机会。
