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研究论文

一些高碳富勒烯的光谱及HPLC特征

陈中方;郝策;吴师;赵学庄;赵鸿喜;潘荫明;黄承义;张法义;李文兰;唐敖庆   

  1. 南开大学化学系;南开大学中心实验室;南开大学吸附与分离功能高分子国家重点实验;吉林大学理论化学研究所
  • 发布日期:1999-01-15

Spectra of some higher fullerens and their HPLC characteristics

CHEN ZHONGFANG;HAO CE;WU SHI;ZHAO XUEZHUANG;ZHAO HONGXI;PAN YINMING;HUANG CHENGYI;ZHANG FAYI;LI WENLAN;TANG AOQING   

  • Published:1999-01-15

被引次数

2

利用对叔丁基杯[8]芳烃对烟炱中C60的选择性配合作用使烟炱邻二氯苯(ODCB)提取物中的高碳成份得到富集。用高效液相色谱(HPLC)分离, 得到C70, C76, C78, C84和C86五种高碳富勒烯及相应的UV-Vis光谱。实验中发现ODCB提取物中C78的比例与其它溶剂提取物略有差别, 富勒烯的保留时间的对数与富勒烯的碳原子数之间存在良好的线性关系, (即富勒烯HPLC碳数规律), 随着富勒烯对称性的降低, UV-Vis光谱吸收极值增多, 谱带有红移趋势。通过对质谱, UV-Vis光谱, HPLC及富勒烯碳数规律的分析, 对C86的存在和分离进行了探讨。

关键词: 紫外分光光度法, 高速液体色谱, 质谱法, 碳原子, 富勒烯

Higher fullerences in ODCB extract of primary soots by arc-heating method were concentrated by selective complexation between t-butyl calixene^[^8^] and C60. Better seperation and UV-Vis spectra of higher fullerenes C70, C76, C78, C84 and C86 were achieved using Waters 2010-HPLC. We found that the ratio of C78 isomers extracted by ODCB is different from that of extracts by other solvents such as toluene and CS2. In the process of HPLC seperation, we found that the logarithm of retention time ln(r~R) has a linear relationship with the number of fullerene carbons (Carbon Number Rule of Fullerenes), we also found that the spectra of fullerenes have a tendency of red-shift associated with the reduction of the symmestry of fullerenes. The existence and seperation of C86 were discussed by analysizing the LD-TOFMS, UV-Vis, HPLC and Carbon Number Rule of Fullerenes.

Key words: ULTRAVIOLET SPECTROPHOTOMETRY, HIGH SPEED LIQUID CHROMATOGRAPHY, MASS SPECTROGRAPHY, CARBON ATOM, FULLERENES

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