Probing trans-polyacetylene segments in a diamond film by tip-enhanced Raman spectroscopy
| Autor: | Leyong Hu, Yang Guo, Shibing Tian, Junjie Li, Changzhi Gu, Shuo Du |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_element
02 engineering and technology Chemical vapor deposition engineering.material 010402 general chemistry 01 natural sciences Polyacetylene chemistry.chemical_compound symbols.namesake Materials Chemistry Electrical and Electronic Engineering Nanoscopic scale chemistry.chemical_classification Surface science business.industry Mechanical Engineering Diamond General Chemistry Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Electronic Optical and Magnetic Materials chemistry symbols engineering Optoelectronics 0210 nano-technology Raman spectroscopy business Carbon |
| Zdroj: | Diamond and Related Materials. 116:108415 |
| ISSN: | 0925-9635 |
| DOI: | 10.1016/j.diamond.2021.108415 |
| Popis: | As an important carbon material, a nano-crystalline diamond (NCD) film is very promising in the field of science and technology. However, there are little knowledge about surface physics and chemistry of nanoscale in NCD films. Here, we perform nanoscale imaging of NCD films grown by hot filament chemical vapor deposition, using tip-enhanced Raman spectroscopy. With ~20 nm spatial resolution, we resolve nanoscale spatial correlations of trans-polyacetylene segments on the surface with characterized Raman modes at 1150 cm−1 and 1480 cm−1 that originate from the motion of conjugate polymer skeletons with a substantial contribution from the in-plane bending of carbon‑hydrogen bonds and stretching vibrations of the double carbon‑carbon bonds. Our work is helpful to understand the role of TPA in NCD synthesis reaction in nanoscale and improve the device application based on this material. |
| Databáze: | OpenAIRE |
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