[26a-E304-1~9] 12.2 Characterization and Materials Physics

[26a-E304-1] Thermopower of Single-Molecule Junctions of Overcrowded Ethylene

〇Shintaro Fujii¹, Yoshiaki Shoji², Takanori Fukushima², Tomoaki Nishino¹ (1.School of Sci., Tokyo Tech., 2.Lab. for Chem. and Life Sci., Tokyo Tech.)

Keywords:thermopower, single-molecule junction

Chromism is a change in the color or electronic state of a molecule caused by external stimuli. In this study, we aimed to clarify the thermoelectric properties of an overcrowded ethylene molecule that exhibit chromism by conformational isomerization to external stimuli. To clarify the thermoelectric property at the single molecule level, the single-molecule junction was produced between small Au electrodes using the break junction method, and the thermopower was measured. The results showed that the thermoelectric properties differed depending on chromism, i.e., conformational isomerization of molecules.