[8p-E203-1~15] 9.4 Thermoelectric conversion

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-E203-2] Reversible Control of the Seebeck Coefficient in Photoresponsive Ionic Liquids

〇Ryo Inada¹, Konosuke Ochi¹, Yuki Hanamura¹, Tomoyuki Mochida^3,4, Hirokazu Tada^1,2 (1.Grad. Sch. Eng. Sci., The Univ. of Osaka, 2.OTRI-Spin, The Univ. of Osaka, 3.Grad. Sch. Sci., Kobe Univ., 4.Research Center for Membrane and Film Technology, Kobe Univ.)

Keywords:

Ionic Liquid,Thermoelectric materials,Photocrosslinking reaction

The Seebeck coefficient of ionic liquids depends on the difference in mobility between cations and anions. In this study, the photocrosslinking reaction of an ionic liquid containing a Ru complex was utilized to selectively suppress cation mobility upon UV irradiation. As a result, the absolute value of the Seebeck coefficient increased by a factor of 1.3. The reaction was also thermally reversible, and the Seebeck coefficient restored to its value prior to UV irradiation after heating. These results demonstrate that the Seebeck coefficient of an ionic liquid can be reversibly controlled using only an external optical stimulus, without the addition of any solvent or other additives.