Tetrabromobenzene-based molecular alloys - a tool for tailoring the temperature of the thermosalient phase transition
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| Název: | Tetrabromobenzene-based molecular alloys - a tool for tailoring the temperature of the thermosalient phase transition |
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| Autoři: | Klaser, Teodoro, Stepančić, Oskar, Popović, Jasminka, Pisk, Jana, Pavić, Luka, Picek, Igor, Matković-Čalogović, Dubravka, Skoko, Željko |
| Přispěvatelé: | Lund University, Profile areas and other strong research environments, Lund University Profile areas, LU Profile Area: Light and Materials, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Lunds universitets profilområden, LU profilområde: Ljus och material, Originator, Lund University, Faculty of Engineering, LTH, LTH Profile areas, LTH Profile Area: Nanoscience and Semiconductor Technology, Lunds universitet, Lunds Tekniska Högskola, LTH profilområden, LTH profilområde: Nanovetenskap och halvledarteknologi, Originator, Lund University, Faculty of Science, Department of Physics, Synchrotron Radiation Research, Lunds universitet, Naturvetenskapliga fakulteten, Fysiska institutionen, Synkrotronljusfysik, Originator, Lund University, Profile areas and other strong research environments, Strategic research areas (SRA), NanoLund: Centre for Nanoscience, Lunds universitet, Profilområden och andra starka forskningsmiljöer, Strategiska forskningsområden (SFO), NanoLund: Centre for Nanoscience, Originator |
| Zdroj: | Journal of Materials Chemistry C. 13(13):6539-6546 |
| Témata: | Engineering and Technology, Materials Engineering, Metallurgy and Metallic Materials, Teknik, Materialteknik, Metallurgi och metalliska material |
| Popis: | A series of molecular alloys of 1,2,4,5-tetrabromobenzene and 1,2,4,5-tetrachlorobenzene with varying compositions were prepared in an attempt to obtain jumping crystals with adjustable temperature of thermosalient phase transition. Molecular alloys were studied with a combination of thermal and structural techniques (DSC, SCXRD, XRPD, hot-stage microscopy). Alloys with a high 1,2,4,5-tetrabromobenzene content (more than 90 wt%) exhibited thermosalient behaviour. Thermosalient alloys exhibited negative uniaxial thermal expansion and colossally large coefficients of thermal expansion (both linear and volumetric), with unit cell parameters increasing proportionally with tetrabromobenzene content. Finally, it was found that the temperature of phase transition increases linearly with the tetrabromobenzene content, from 30.13 °C to 45.33 °C, meaning that the tuning temperature of thermosalient mechanic response was successfully achieved. |
| Přístupová URL adresa: | https://doi.org/10.1039/d4tc04615c |
| Databáze: | SwePub |
Nájsť tento článok vo Web of Science | Abstrakt: | A series of molecular alloys of 1,2,4,5-tetrabromobenzene and 1,2,4,5-tetrachlorobenzene with varying compositions were prepared in an attempt to obtain jumping crystals with adjustable temperature of thermosalient phase transition. Molecular alloys were studied with a combination of thermal and structural techniques (DSC, SCXRD, XRPD, hot-stage microscopy). Alloys with a high 1,2,4,5-tetrabromobenzene content (more than 90 wt%) exhibited thermosalient behaviour. Thermosalient alloys exhibited negative uniaxial thermal expansion and colossally large coefficients of thermal expansion (both linear and volumetric), with unit cell parameters increasing proportionally with tetrabromobenzene content. Finally, it was found that the temperature of phase transition increases linearly with the tetrabromobenzene content, from 30.13 °C to 45.33 °C, meaning that the tuning temperature of thermosalient mechanic response was successfully achieved. |
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| ISSN: | 20507526 20507534 |
| DOI: | 10.1039/d4tc04615c |