富勒烯纳米须的液-液界面沉淀法合成与表征：C60 溶解度的影响。

Synthesis and characterization of fullerene nanowhiskers by liquid-liquid interfacial precipitation: influence of C60 solubility.

机构信息

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Aoba-ku, Sendai, Japan.

出版信息

Molecules. 2012 Mar 29;17(4):3858-65. doi: 10.3390/molecules17043858.

DOI:10.3390/molecules17043858

PMID:22456616

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6268670/

Abstract

Fullerene nanowhiskers (FNWs) composed of C(60) fullerene molecules were prepared using the liquid-liquid interfacial precipitation (LLIP) method in the carbon-disulfide (CS(2)) and isopropyl alcohol (IPA) system. The electron microscopic images reveal the formation of non-tubular FNWs. The X-ray diffraction (XRD) pattern studies indicate the presence of fcc crystalline structure and unusual triclinic structure in the FNWs. The selected area electron diffraction pattern (SAED) analysis demonstrates the existence of triclinic and electron beam assisted fcc to tetragonal crystalline phase transformation. The formation of triclinic structure might be validated due to the partial polymerization of FNWs at C(60) saturated CS(2)-IPA interface. The high solubility of C(60) in CS(2) solvent system results in partial polymerization of FNWs. The polymerization of fullerene molecules in the FNWs has been further confirmed using Raman spectroscopy.

摘要

富勒烯纳米须（FNWs）由 C（60）富勒烯分子组成，采用 CS（2）和 IPA 体系中的液-液界面沉淀（LLIP）方法制备。电子显微镜图像显示了非管状 FNWs 的形成。X 射线衍射（XRD）图谱研究表明 FNWs 中存在 fcc 晶体结构和不寻常的三斜晶体结构。选区电子衍射图谱（SAED）分析表明存在三斜和电子束辅助的 fcc 到四方晶相转变。由于 FNWs 在 C（60）饱和 CS（2）-IPA 界面处的部分聚合，三斜结构的形成可能得到验证。C（60）在 CS（2）溶剂体系中的高溶解度导致 FNWs 的部分聚合。使用拉曼光谱进一步证实了 FNWs 中富勒烯分子的聚合。