A Liquid Arylazopyrazole Derivative as Molecular Solar Thermal Fuel with Long-term Thermal Stability

Masa Aki Morikawa, Hanyu Yang, Keita Ishiba, Kouta Masutani, Joseph K.H. Hui, Nobuo Kimizuka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A liquid arylazopyrazole derivative is newly synthesized as molecular solar thermal fuel. It shows efficient trans-to-cis photoisomerization in the neat liquid state, with the cis-isomer having a significantly longer thermal half-life (t1/2 = 3,069 h, at 25 °C). It overcomes the limited thermal stability of the corresponding liquid cis-azobenzene derivative (t1/2 = 16 h) and marked a gravimetric energy density of 41 kJ¢mol11, which meets the requirement for thermophysical heat storage applications.

Original languageEnglish
Pages (from-to)736-740
Number of pages5
JournalChemistry Letters
Volume49
Issue number6
DOIs
Publication statusPublished - Jun 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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