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High Thermal Diffusivity in Thermally Treated Filamentous Virus-Based Assemblies with a Smectic Liquid Crystalline Orientation

1
Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
2
Precursory Research for Embryonic Science and Technology, Japan Science and Technology, Saitama 332-0012, Japan
3
Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
*
Authors to whom correspondence should be addressed.
Viruses 2018, 10(11), 608; https://doi.org/10.3390/v10110608
Received: 6 August 2018 / Revised: 22 October 2018 / Accepted: 31 October 2018 / Published: 2 November 2018
(This article belongs to the Section Bacterial Viruses)
Polymers are generally considered thermal insulators because the amorphous arrangement of the polymeric chains reduces the mean free path of heat-conducting phonons. Recent studies reveal that individual chains of polymers with oriented structures could have high thermal conductivity, because such stretched polymeric chains effectively conduct phonons through polymeric covalent bonds. Previously, we have found that the liquid crystalline assembly composed of one of the filamentous viruses, M13 bacteriophages (M13 phages), shows high thermal diffusivity even though the assembly is based on non-covalent bonds. Despite such potential applicability of biopolymeric assemblies as thermal conductive materials, stability against heating has rarely been investigated. Herein, we demonstrate the maintenance of high thermal diffusivity in smectic liquid crystalline-oriented M13 phage-based assemblies after high temperature (150 °C) treatment. The liquid crystalline orientation of the M13 phage assemblies plays an important role in the stability against heating processes. Our results provide insight into the future use of biomolecular assemblies for reliable thermal conductive materials. View Full-Text
Keywords: filamentous virus; self-assembly; liquid crystal; thermophysical property; structural stability filamentous virus; self-assembly; liquid crystal; thermophysical property; structural stability
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MDPI and ACS Style

Sawada, T.; Murata, Y.; Marubayashi, H.; Nojima, S.; Morikawa, J.; Serizawa, T. High Thermal Diffusivity in Thermally Treated Filamentous Virus-Based Assemblies with a Smectic Liquid Crystalline Orientation. Viruses 2018, 10, 608.

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