Investigation of Mechanism on Spontaneous Single Crystal Phase Change Triggered by Small Mechanical Stress

2014 Fiscal Year Final Research Report

• Project/Area Number: 26620053
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Hokkaido University
• Principal Investigator: ITO Hajime 北海道大学, 工学(系)研究科(研究院), 教授 (90282300)
• Co-Investigator(Kenkyū-buntansha): SEKI Tomohiro 北海道大学, 大学院工学研究院, 助教
• Project Period (FY): 2014-04-01 – 2015-03-31
• Keywords: メカノクロミズム / 単結晶-単結晶相転移 / 分子ドミノ / 発光性錯体 / 金錯体 / イソシアニド

Outline of Final Research Achievements

Several gold-isocyanide complexes with various structures were synthesized and
investigated in detail. The directions of molecule arrangements in the new crystal phases generated by the small mechanical stress were random. The crystal structure and their phase direction of the crystal before the phase change did not influence the direction of the new crystal phase. We also found a new luminescent mechanochromic material with four different colors. We further discover a new gold-isocyanide complex that can undergo single-crystal-to-single-crystal phase change by irradiation of UV light. This complex shows a photosalient property.

Free Research Field

有機化学