[2D01-2D04] Interenational sess. (4)

[2D02] Photo-triggered CO₂ capture/release mode change by using photochromic spiropyran in the polar gradient environment

○Keigo Tashiro¹, Masaki Otori¹, Shigeo Satokawa¹ (1. Seikei University)

Keywords:CO2 concentration, photochromic spiropyran, polar-gradient field

Photo-induced mode change of carbon dioxide (CO₂) capture/release was achieved by a rationally designed system composed of spiropyran introduced into a polar-gradient field in the interlayer of montmorillonite. Density functional theory calculations and CO₂ adsorption tests demonstrated that spiropyran can interact with CO₂ through not only weak physical interaction such as Coulombic or van der Waals interactions but also electronic interaction, while photo-isomerized merocyanine was in the CO₂ release mode. Photo-induced CO₂ concentration systems highly contribute to the realization of carbon neutrality, hence, this study could be a breakthrough for the world’s environmental issues.