Fluorescent organic single crystals with elastic bending flexibility: 1,4-bis(thien-2-yl)-2,3,5,6-tetrafluorobenzene derivatives
| العنوان: | Fluorescent organic single crystals with elastic bending flexibility: 1,4-bis(thien-2-yl)-2,3,5,6-tetrafluorobenzene derivatives |
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| المؤلفون: | Natsumi Kamiya, Toshio Koizumi, Yoshinobu Yokomori, Takuto Maeda, Shotaro Hayashi, Atsushi Asano |
| المصدر: | Scientific Reports Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017) |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Multidisciplinary, Materials science, 010405 organic chemistry, lcsh:R, lcsh:Medicine, Crystal structure, Bending, 010402 general chemistry, 01 natural sciences, Fluorescence, Article, 0104 chemical sciences, law.invention, Crystal, Stress (mechanics), Crystallography, Molecular wire, Lamella (surface anatomy), law, lcsh:Q, Crystallization, lcsh:Science |
| الوصف: | Organic single crystals with elastic bending flexibility are rare because they are generally brittle. We report here fluorescent organic single crystals based on thiophene-tetrafluorobenzene-thiophene derivatives, mainly 1,4-bis(thien-2-yl)-2,3,5,6-tetrafluorobenzene. Three derivatives were synthesized by Pd-catalyzed cross-coupling reactions (Stille or direct arylation pathways). The crystallization of the derivatives gave large (mm- or cm-scale) crystals. Two crystals of 1,4-bis(thien-2-yl)-2,3,5,6-tetrafluorobenzene, 1, and 1,4-bis(4-methylthien-2-yl)-2,3,5,6-tetrafluorobenzene, 3, bent under applied stress and quickly recovered its original shape upon relaxation. The other crystal of 1,4-bis(5-methylthien-2-yl)-2,3,5,6-tetrafluorobenzene, 2, showed brittle breakage under applied stress (normal behavior). Fibril lamella crystal structure based on criss-cross packed slip-stacked molecular wires and its structural integrity are important factors for the design and production of next generation crystal materials with elastic bending flexibility. Furthermore, mechanical bending–relaxation resulted in reversible change of the morphology and fluorescence (mechanofluorochromism). Such bendable crystals would lead to the next generation solid-state fluorescent and/or semiconducting materials. |
| تدمد: | 2045-2322 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8bb8d5886724cdbd174e0127c3b1de94 https://pubmed.ncbi.nlm.nih.gov/28842693 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....8bb8d5886724cdbd174e0127c3b1de94 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
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