On-Surface Ullmann-Type Coupling Reactions of Aryl Halide Precursors with Multiple Substituted Sites.
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| Title: | On-Surface Ullmann-Type Coupling Reactions of Aryl Halide Precursors with Multiple Substituted Sites. |
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| Authors: | Liu, Qiwei1 (AUTHOR), Gao, Yuhong1 (AUTHOR), Zhang, Chi (AUTHOR) zhangchi11@tongji.edu.cn |
| Source: | Nanomaterials (2079-4991). May2025, Vol. 15 Issue 9, p646. 20p. |
| Subjects: | Scanning probe microscopy, Molecular electronics, Coupling reactions (Chemistry), Aryl halides, Electronic equipment |
| Abstract: | The fabrication of low-dimensional nanostructures through on-surface synthesis has emerged as a promising strategy for developing high-precision electronic devices. Among various reactions, Ullmann-type coupling (with carbon–halogen bond activation) stands out in this field as a prevalent methodology due to its straightforward activation process, highly programmable characteristics, and remarkable synthetic efficiency. To date, on-surface Ullmann-type coupling reactions of aryl halide precursors have been extensively studied with the assistance of in situ characterization techniques. The resulting carbon-based nanostructures exhibit high structural diversity and significant potential for applications in molecular electronics. This review categorizes recent progress in the precise preparation of carbon-based nanostructures based on molecular precursors with distinct halogen substituted sites, including para-, meta-, and ortho-sites, peri- and bay-regions, and their combination. In addition, systematic analysis and comparative discussion of their respective characteristics is also provided. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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