Synthesis and analytical properties of a novel columnar metallomesogenic polymer

Metallomesogenic stationary phase for open‐tubular capillary electrochromatography

“…1 and consisted of side-chain copper complex with carboxylato ligands of anchored pentadecanate as well as additive octadecanate. The complete method for P-C 15 CuC 18 synthesis was described in [15]. Two ends of the conditioned capillary were connected to two buffer capillary columns (5 m) with glass connectors.…”

“…From the electrochromatograms elicited, the possible chromatographic interactions between the mobile analytes and stationary phase are suggested. Even though P-C 15 CuC 18 only exists in lamellar crystalline phase at room temperature, the partition information obtained from the GC [15] and approved by the multilinear model [26], which revealed the lamellar crystalline phase mainly affords the Lewis acid-base and dispersion interactions, is useful for the judgment of mechanism.…”

“…Based on the previous papers described in GC assays [15,16], this study extends to the OT-CEC characterization of the columnar mesogenic polymer, which bears copper carboxylato units in stacks and is covalently crosslinked to the wall surface of deactivated capillary. EOF measurements as a function of pH, ionic strength, and organic modifier delineate this specific coating material.…”

“…[10]. Liu and co-workers reported a series of application in GC stationary phases: nickel-, zinc-thiolate, and copper-carboxylate complexes showing, respectively, calamitic and discotic mesophases were designed as the coating materials on the Chromosorb W for packing columns [11][12][13] and as the active moieties introducing into the polysiloxane backbone for wall-coated capillaries [13][14][15][16]. In general, the specified mesomorphic phases manifest the separation of not only geometric isomers due to the benefits of the orientated ordering of liquid crystal molecules but also analytes with electron-donating ability due to the ligandexchange interactions committed to the coordination centers of metal ions.…”

Fabrication and characterization of open‐tubular CEC modified with tentacle‐type metal‐chelating polymer chains

“…Since its introduction in 1961 [12], the ligand-exchange mode has been widely used in separation science; some selected topics include LC [13], GC [14][15][16], CE [17,18], CEC [8,19,20], and micellar EKC [21]. Recently, Chuang et al [19] used polystyrene monolithic column functionalized with copper-iminodiacetate complex as a stationary phase for the ligand exchange OTCEC separation of amino acids and peptides.…”