Cucurbit[6]uril in combination with guanidinium ionic liquid as a new type of stationary phase for capillary gas chromatography

Separation performance of cucurbit[7]uril in ionic liquid-based sol-gel coating as stationary phase for capillary gas chromatography

“…Column preparation for the CB7-SG capillary column followed the method in the reference [13] with minor modification. CB7 and GBIL were synthesized following the same methods provided in our previous work [14] and [13], respectively.…”

“…However, their poor solubility in common organic solvents for column preparation greatly limits their use for the intended purpose. Up to now, only two reports on using CBs as stationary phases for capillary GC are available [13,14], showing their high selectivity and thermal stability as stationary phases for capillary GC separations.…”

“…10.066 0021-9673/© 2014 Elsevier B.V. All rights reserved. method [13]. The GBIL was N , N -(6 , 6 -dihydroxy)dihexyl-N, N, N , N -tetramethyl guanidinium bis(trifluoromethylsulfonyl)imide (DHHTMG-NTf 2 ) (denoted as GBIL in the following).…”

“…Also, CBs possess high thermal stability. The unique structures and novel physicochemical properties of CBs have attracted great attention in supramolecular chemistry [4][5][6], separation science [7][8][9][10][11][12][13][14] and many other fields [15,16]. The aforementioned features also offer CBs as ideal candidates for capillary GC stationary phases.…”

Cyclotriveratrylene as a new-type stationary phase for gas chromatographic separations of halogenated compounds and isomers

“…Due to their advantageous features in stability, solubility and recognition selectivity to guest molecules, CTVs seemed to be promising candidates as stationary phase for capillary gas chromatography (GC). In GC separations, other types of macrocycles such as crown ethers [9][10][11], cyclodextrins [12][13][14], calixarenes [15][16][17][18] and cucurbiturils [19][20][21][22] have been reported. On the basis of the aforementioned recognition selectivity for halogenated compounds, GC separation performance of CTV was highly expected for these analytes and their isomers.…”