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Mechanical deformation and multiple thermal restoration of organic crystals: reversible multi-stage shape-changing effect with luminescence-color changes
| Title: | Mechanical deformation and multiple thermal restoration of organic crystals: reversible multi-stage shape-changing effect with luminescence-color changes |
| Authors: | Feng, Chi Browse this author | | Seki, Tomohiro Browse this author | | Sakamoto, Shunichi Browse this author | | Sasaki, Toshiyuki Browse this author | | Takamizawa, Satoshi Browse this author | | Ito, Hajime Browse this author →KAKEN DB |
| Issue Date: | 7-Sep-2022 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Chemical science |
| Volume: | 13 |
| Issue: | 33 |
| Start Page: | 9544 |
| End Page: | 9551 |
| Publisher DOI: | 10.1039/d2sc03414j |
| Abstract: | Shape-memory materials can be mechanically deformed and subsequently reverse the deformation upon changing the temperature. Shape-memory materials have attracted considerable attention for basic research and industrial applications, and polymer and alloy shape-memory materials have been well studied; however, it is formidably challenging to develop functional shape-memory materials, such as materials with multi-stage and anisotropic shape changes and shape changes accompanied by changes in color and light emission. Here, we found a reversible multi-stage shape-changing effect after mechanical deformation in a molecular crystal induced by multi-step thermal phase transitions with reversible shape changes and luminescence-color changes. Using single-crystal structure and thermal analyses as well as mechanical property measurements, we found that the reversible multi-stage shape-changing effect was achieved by a combination of a twinning deformation and multi-step thermal phase transitions. The changes in the crystal shape and luminescence suggest novel strategies for imparting known shape-memory materials with additional functionalities. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/86731 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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