[18p-D63-1~17] 12.1 Fabrications and Structure Controls

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18p-D63-12] Pseudo-reversible chromism of an organic-inorganic hybrid water inclusion crystal

〇Jun Kuwada¹, Matsuo Takumi^1,2, Hayashi Shotaro^1,2 (1.Kochi Univ. of Tech., 2.Res. Int. KUT)

Keywords:

chromism,luminescence,single-crystal

Organic molecular crystals including solvent molecules have been widely studied in recent years. However, these structures are easily broken when the guest solvent molecules are removed (desorption process). As a result of various investigations, we have successfully synthesized water-containing green-luminescent crystals based on fluorophore and hydrated borane. Interestingly, after heating treatment, the crystal showed red-shifted luminescence (Δλ : 100 nm, green to red). The treated crystal showed a packing structure, eliminating a part of the water. More interestingly, the crystal offers pseudo-reversible chromism based on water molecule adsorption under a normal atmosphere in Japan. These structures and characteristics were analyzed by thermogravimetric analysis, single-crystal x-ray diffraction analysis, and photoluminescence measurements in detail.