Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 167–171 |
| Number of pages | 5 |
| Journal | Journal of Chromatography A |
| Volume | 1500 |
| DOIs | |
| Publication status | Published - 2017 |
Keywords
- Capillary coating
- Crystallisation dimension
- Interpenetrated metal-organic material
- Linear solvation energy relationship
- Liquid chromatography
- Separation-in-tip
Cite this
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Selectivity differences of coordination compound stationary phases for polyaromatic hydrocarbons and polar analytes in gas and liquid phases. / Nolvachai, Yada; Kulsing, Chadin; Hawes, Chris S; Batten, Stuart R; Turner, David R; Marriott, Philip J.
In: Journal of Chromatography A, Vol. 1500, 2017, p. 167–171.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Selectivity differences of coordination compound stationary phases for polyaromatic hydrocarbons and polar analytes in gas and liquid phases
AU - Nolvachai, Yada
AU - Kulsing, Chadin
AU - Hawes, Chris S
AU - Batten, Stuart R
AU - Turner, David R
AU - Marriott, Philip J
PY - 2017
Y1 - 2017
N2 - A precursor solution to the metal–organic framework (MOF), Cd(1,4,7,10-tetrakis(4-carboxybenzyl)-1,4,7,10-tetraazacyclododecane), was aged in a surface-functionalised 250 m-diameter capillary, togenerate a film containing the constituents of the bulk phase crystalline material. EDX analysis revealed ahigher ratio of ligand elements (C, N and O) to Cd in the capillary coated phase compared to that achievedfrom bulk synthesis in a vial. Separation performance of the coated capillary for gas chromatography (GC)was compared to the performance of the original MOF crystals packed in tips for liquid elution chromatography(LEC) towards the separation of polycyclic aromatic hydrocarbons (PAHs) and small probe analytes with different properties. This study showed that different retention mechanisms were observed for the same set of analytes in gas and liquid phases. Independently of the trend of vapour pressure difference, the GC result showed less specific size selective retention, but with stronger retention towards larger PAHs .A linear solvation energy relationship correlation further revealed enhanced retention contributions(positive stationary phase descriptor values) by cavity formation/dispersion interactions and H-bonding with acid functionality of the probe analytes in both GC and LEC (though stronger in LEC), whilst H bonding with basic functional groups slightly increased retention in GC; retention was strengthened bydipole–dipole/dipole–induced dipole interactions only in LEC.
AB - A precursor solution to the metal–organic framework (MOF), Cd(1,4,7,10-tetrakis(4-carboxybenzyl)-1,4,7,10-tetraazacyclododecane), was aged in a surface-functionalised 250 m-diameter capillary, togenerate a film containing the constituents of the bulk phase crystalline material. EDX analysis revealed ahigher ratio of ligand elements (C, N and O) to Cd in the capillary coated phase compared to that achievedfrom bulk synthesis in a vial. Separation performance of the coated capillary for gas chromatography (GC)was compared to the performance of the original MOF crystals packed in tips for liquid elution chromatography(LEC) towards the separation of polycyclic aromatic hydrocarbons (PAHs) and small probe analytes with different properties. This study showed that different retention mechanisms were observed for the same set of analytes in gas and liquid phases. Independently of the trend of vapour pressure difference, the GC result showed less specific size selective retention, but with stronger retention towards larger PAHs .A linear solvation energy relationship correlation further revealed enhanced retention contributions(positive stationary phase descriptor values) by cavity formation/dispersion interactions and H-bonding with acid functionality of the probe analytes in both GC and LEC (though stronger in LEC), whilst H bonding with basic functional groups slightly increased retention in GC; retention was strengthened bydipole–dipole/dipole–induced dipole interactions only in LEC.
KW - Capillary coating
KW - Crystallisation dimension
KW - Interpenetrated metal-organic material
KW - Linear solvation energy relationship
KW - Liquid chromatography
KW - Separation-in-tip
UR - http://www.scopus.com/inward/record.url?scp=85018763886&partnerID=8YFLogxK
U2 - 10.1016/j.chroma.2017.04.037
DO - 10.1016/j.chroma.2017.04.037
M3 - Article
VL - 1500
SP - 167
EP - 171
JO - Journal of Chromatography A
JF - Journal of Chromatography A
SN - 0021-9673
ER -