高纯菱方相C<sub>60</sub>聚合物的高温高压合成

来守龙; 杨西贵

doi:10.11858/gywlxb.20251255

高纯菱方相C₆₀聚合物的高温高压合成

doi: 10.11858/gywlxb.20251255

来守龙,
杨西贵^*, ,

郑州大学物理学院河南省金刚石材料与器件重点实验室, 河南郑州　450001

基金项目: 国家自然科学基金（62422408，12374016）

详细信息

作者简介:
来守龙（1998－），男，博士研究生，主要从事高压科学与金刚石材料研究. E-mail：laisl@gs.zzu.edu.cn

通讯作者:
杨西贵（1990－），男，博士，教授，主要从事金刚石材料与器件研究. E-mail：yangxg@zzu.edu.cn

中图分类号: O521.2
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出版历程
- 收稿日期: 2025-11-10
- 修回日期: 2026-01-19
- 网络出版日期: 2026-01-21
- 刊出日期: 2026-09-05

High-Temperature and High-Pressure Synthesis of High-Purity Rhombohedral C₆₀ Polymer

LAI Shoulong,
YANG Xigui^{*
, ,}

Henan Key Laboratory of Diamond Materials and Devices, School of Physics, Zhengzhou University, Zhengzhou 450001, Henan, China

摘要

摘要: 菱方相C₆₀聚合物在二维材料及催化等领域有着重要的应用潜力，然而，高纯度、高质量的菱方相C₆₀聚合物制备仍然难以实现。在650 ℃、6 GPa的温压条件下成功合成了菱方相C₆₀聚合物，利用X射线衍射、拉曼光谱、X射线光电子能谱及球差校正透射电子显微镜等分析手段，确认所合成样品为高纯二维菱方相结构。探究了压力和温度（6～10 GPa、650～800 ℃）对C₆₀聚合的影响，明确了菱方相与无序非晶碳簇之间的相变边界。变温拉曼光谱测试结果表明：该菱方相C₆₀聚合物在约350 ℃以下保持稳定，超出此温度将发生解聚，恢复为原始面心立方结构C₆₀分子。本研究为高质量菱方相C₆₀聚合物的合成提供了明确的工艺窗口，为其在功能材料领域的进一步应用奠定了实验基础。
- C₆₀ /
- 高温高压 /
- 菱方相 /
- 聚合 /
- 相变
Abstract: Rhombohedral C₆₀ polymer holds significant potential for applications in two-dimensional materials and catalysis, yet the synthesis of high-purity, high-quality rhombohedral C₆₀ remains challenging. In this study, rhombohedral C₆₀ polymer was successfully synthesized under conditions of 6 GPa and 650 ℃. The obtained sample was confirmed to be a high-purity two-dimensional rhombohedral phase through characterization techniques including X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and aberration-corrected transmission electron microscopy. The effects of pressure and temperature (6–10 GPa, 650–800 ℃) on the polymerization of C₆₀ were investigated, clarifying the phase boundary between the rhombohedral phase and disordered amorphous carbon clusters. Variable-temperature Raman spectroscopy revealed that the rhombohedral C₆₀ polymer remains stable up to about 350 ℃, beyond which it depolymerizes and reverts to the original face-centered cubic C₆₀ molecules. This work provides a clear processing window for the synthesis of high-quality rhombohedral C₆₀ polymer, laying an experimental foundation for its further application in functional materials.
- C₆₀ /
- high-temperature and high-pressure /
- rhombohedral phase /
- polymerization /
- phase transition

HTML全文

图 1 R-C₆₀聚合物表征：(a) XRD谱图（插图：原子结构示意图），理论图谱出自参考文献[14]；(b) 室温下532 nm激光激发的Raman光谱；(c) 室温下532 nm激光激发的PL光谱；(d) C1s XPS谱图

Figure 1. Characterization of R-C₆₀ polymer: (a) XRD pattern (Inset: schematic diagram of the atomic structure), the theoretical pattern is from Ref. [14]; (b) Raman spectrum excited by a 532 nm laser at room temperature; (c) PL spectrum excited by a 532 nm laser at room temperature; (d) C1s XPS spectrum

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图 2 R-C₆₀聚合物的结构表征：(a) 用于STEM观测的R-C₆₀的典型薄片图像；(b) 薄片放大倍率的HAADF-STEM图像及其FFT（插图）图谱；(c)原子分辨的HAADF-STEM图像（对应图2(b)橙色框区域，插图为R-C₆₀聚合物的晶体结构模型）

Figure 2. Structural characterization of R-C₆₀ polymer: (a) typical flake of R-C₆₀ used for STEM observation; (b) magnified HAADF-STEM image of the flake and its corresponding FFT pattern (inset); (c) atomically resolved HAADF-STEM image (Corresponding to the orange box in Fig. 2(b); the inset shows the crystal structure model of R-C₆₀ polymer.)

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图 3 不同温压条件合成R-C₆₀聚合物的表征：(a) 650 ℃、不同压力下的XRD谱；(b) 650 ℃、不同压力下的Raman光谱；(c) 6 GPa、不同温度下的XRD谱；(d) 6 GPa、不同温度下的Raman光谱

Figure 3. Characterization of R-C₆₀ polymer synthesized under varying p-T conditions: (a) XRD patterns at 650 ℃ under different pressures; (b) Raman spectra at 650 ℃ under different pressures; (c) XRD patterns at 6 GPa under different temperatures; (d) Raman spectra at 6 GPa under different temperature

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图 4 532 nm激光激发下R-C₆₀聚合物的变温Raman光谱

Figure 4. Temperature-dependent Raman spectra of R-C₆₀ polymer excited by 532 nm laser

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