Projects per year
Abstract
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.
Original language | English |
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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
Projects
- 2 Finished
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Oxidation Product Generation During Heating and Storage of Bio-fuels and Alternative Fuels Assessed by Multidimensional Gas Chromatography.
Marriott, P. (Primary Chief Investigator (PCI)) & Evans, D. (Partner Investigator (PI))
Australian Research Council (ARC), Defence Science and Technology Group (DST) (Australia)
1/07/13 → 31/12/17
Project: Research
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Ultra-high resolution hybrid comprehensive-multidimensional gas and supercritical fluid chromatography for explicit characterisation of petrochemicals
Marriott, P. (Primary Chief Investigator (PCI)), Chaffee, A. (Chief Investigator (CI)) & Mitrevski, B. (Chief Investigator (CI))
Australian Research Council (ARC)
3/01/13 → 3/03/16
Project: Research
Equipment
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Monash Centre for Electron Microscopy (MCEM)
Sorrell, F. (Manager) & Miller, P. (Manager)
Office of the Vice-Provost (Research and Research Infrastructure)Facility/equipment: Facility