Academic Journal
Heterometallic Benzenehexathiolato Coordination Nanosheets: Periodic Structure Improves Crystallinity and Electrical Conductivity.
| العنوان: | Heterometallic Benzenehexathiolato Coordination Nanosheets: Periodic Structure Improves Crystallinity and Electrical Conductivity. |
|---|---|
| المؤلفون: | Toyoda, Ryojun, Fukui, Naoya, Tjhe, Dionisius HL, Selezneva, Ekaterina, Maeda, Hiroaki, Bourgès, Cédric, Tan, Choon Meng, Takada, Kenji, Sun, Yuanhui, Jacobs, Ian, Kamiya, Kazuhide, Masunaga, Hiroyasu, Mori, Takao, Sasaki, Sono, Sirringhaus, Henning, Nishihara, Hiroshi |
| بيانات النشر: | Wiley //doi.org/10.1002/adma.202106204 Adv Mater |
| سنة النشر: | 2022 |
| المجموعة: | Apollo - University of Cambridge Repository |
| مصطلحات موضوعية: | 2D polymers, benzenehexathiolato metal complexes, coordination nanosheets, electrical conductivities, heterometallicity |
| الوصف: | Funder: White Rock Foundation ; Funder: Jardine Foundation ; Funder: Cambridge Commonwealth European and International Trust ; Coordination nanosheets are an emerging class of 2D, bottom-up materials having fully π-conjugated, planar, graphite-like structures with high electrical conductivities. Since their discovery, great effort has been devoted to expand the variety of coordination nanosheets; however, in most cases, their low crystallinity in thick films hampers practical device applications. In this study, mixtures of nickel and copper ions are employed to fabricate benzenehexathiolato (BHT)-based coordination nanosheet films, and serendipitously, it is found that this heterometallicity preferentially forms a structural phase with improved film crystallinity. Spectroscopic and scattering measurements provide evidence for a bilayer structure with in-plane periodic arrangement of copper and nickel ions with the NiCu2 BHT formula. Compared with homometallic films, heterometallic films exhibit more crystalline microstructures with larger and more oriented grains, achieving higher electrical conductivities reaching metallic behaviors. Low dependency of Seebeck coefficient on the mixing ratio of nickel and copper ions supports that the large variation in the conductivity data is not caused by change in the intrinsic properties of the films. The findings open new pathways to improve crystallinity and to tune functional properties of 2D coordination nanosheets. ; EPSRC-JSPS core-to-core program (EP/S030662/1, JPJSCCA20190005) |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf; text/xml |
| اللغة: | English |
| Relation: | https://www.repository.cam.ac.uk/handle/1810/334266 |
| DOI: | 10.17863/CAM.81679 |
| الاتاحة: | https://www.repository.cam.ac.uk/handle/1810/334266 https://doi.org/10.17863/CAM.81679 |
| Rights: | Attribution 4.0 International ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.AF468233 |
| قاعدة البيانات: | BASE |
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