Molecular shape recognition of polycyclic aromatic hydrocarbons with various alkyl diphenyl bonded phases in microcolumn liquid chromatography
Molecular shape recognition of polycyclic aromatic hydrocarbons with various alkyl diphenyl bonded phases in microcolumn liquid chromatography
复制标题
微柱液相色谱中不同烷基联苯键合相的多环芳烃分子形状识别
DOI：
10.1007/bf02466664
复制
发表时间：
1997
期刊：
影响因子：
1.7
通讯作者：
Y. L. Chen
中科院分区：
文献类型：
--
作者：
K. Jinno;C. Okumura;M. Taniguchi;Y. L. Chen
用微柱液相色谱法研究了多环芳烃（PAHs）在各种新型烷基联苯键合相上的基本保留行为，并与具有相同碳数但侧基为甲基取代苯基的正烷基键合相的保留行为进行了比较。本研究选用了三种不同烷基链长的正烷基二甲基和正烷基二苯基键合相，如C4、C8和C18。研究发现，这些烯烷基联苯相对中、小分子多环芳烃具有非平面识别能力。似乎这种能力随着键合相的烷基链长度的减小而增加。短或中等烷基链长度的二苯基键合相保留非平面溶质比平面溶质。这种趋势与二甲基类似物完全相反。这种独特的保留行为被认为是由非平面溶质与这些二苯基固定相中的两个苯基之间的强分子-分子相互作用引起的。
The basic retention behaviors of polycyclic aromatic hydrocarbons (PAHs) with various novel alkyl diphenyl bonded phases have been examined using microcolumn liquid chromatography The retention behaviors of PAHs with these phases have been compared to those with n-alkyl bonded phases which have the same carbon numbers but methyl side groups instead of phenyl groups. Three different alkyl chain lengths for bothn-alkyl dimenthyl andn-alkyl diphenyl bonded phases such as C4, C8 and C 18 were used in this study. It was found that thesen-alkyl diphenyl phases have a non-planarity recognition capability for small and medium PAHs. It appears that this capability increases as the alkyl chain length of the bonded phases decreases. The short or medium alkyl chain length diphenyl bonded phases retained non-planar solutes better than the planar solutes. This trend is completely opposite to that with dimethyl analogs. This unique retention behavior is believed to be caused by strong molecular-molecular interaction between non-planar solutes and the two phenyl groups in those diphenyl stationary phases.