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Positional isomers on Br-PCL-PDMS-PCL-Br column for GC separation, peaks: (a) methylnaphthalene, (b) dimethylnaphthalene, (c) trimethylbenzene, (d) dichlorobenzene, (e) dibromobenzene, (f) trichlorobenzene, (g) chloronitrobenzene, (h) cyanobenzaldehyde, (i) nitrobenzaldehyde, (j) dichlorobenzaldehyde and (k) xylenol. Oven program: 40 °C (1 min) to 160 °C at 10 °C/min for (a–g); 100 °C to 160 °C at 10 °C/min for (h–k). Flow rate at 0.6 mL/min
Source publication
A bromine-terminated triblock copolymer (Br-PCL-PDMS-PCL-Br) was synthesized and employed as the stationary phase for capillary gas chromatography (GC). The statically coated Br-PCL-PDMS-PCL-Br column showed the efficiency of 2260 plates/m determined by 1-octanol at 120 °C and moderate polarity. For evaluating the separation performance, a mixture...
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The reaction of the complex [Au(phen)Br2](PF6) (phen = 1,10-phenanthroline) with molecular dibromine afforded {[Au(phen)Br2](Br3)}∞ (1). Single crystal diffraction analysis showed that the [Au(phen)Br2]+ complex cations were bridged by asymmetric tribromide anions to form infinite zig-zag chains featuring the motif ···Au–Br···Br–Br–Br···Au–Br···Br–...
Citations
This work firstly reported a new polycaprolactone based material functionalized with guanidinium ionic liquid (PCL-GIL) as the stationary phase with high resolution performance for capillary gas chromatography (GC). It is composed of polycaprolactone (PCL) and guanidinium ionic liquid (GIL) with amphiphilic conformation. The PCL-GIL capillary column coated by static method exhibited high column efficiency of 3942 plates/m and moderate polarity. As a result, the PCL-GIL column exhibited high-resolution capability. For a mixture of 27 analytes with a wide ranging polarity and outperformed the PCL-2OH and HP-35 columns, showing its advantageous separation capability for analytes of diverse types. Moreover, the PCL-GIL column showed high resolving capability for various positional isomers and cis-/trans-isomers, including alkylbenzenes, chlorobenzenes, naphthalenes, bromonitrobenzenes, chloronitrobenzenes, benzaldehydes, phenols, alcohols, respectively. In a word, PCL derivatized by GIL units as a new type of stationary phase has a promising future in GC separations.
