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Microwave-assisted Diels–Alder polycondensation of proton conducting poly(phenylene)s

Adamski, Michael; Skalski, Thomas J. G.; Xu, Shaoyi; Killer, Miho; Schibli, Eric M.; Frisken, Barbara J.; Holdcroft, Steven

(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialRenewable energySAXSTechniqueWAXS

Microwave-assisted Diels–Alder polycondensation of proton conducting poly(phenylene)s

Adamski, Michael; Skalski, Thomas J. G.; Xu, Shaoyi; Killer, Miho; Schibli, Eric M.; Frisken, Barbara J.; Holdcroft, Steven

An exploratory microwave-assisted synthesis of a promising proton-conducting, Diels–Alder poly(phenylene) is reported and comprehensively compared against a traditional, thermal polymerization approach. A 24-fold reduction in reaction time is achieved by microwave synthesis. Characterization of polymers prepared by microwave-assisted synthesis vs. the thermal approach reveals little difference in…
Slow Magnetic Relaxation of Co(II) Single Chains Embedded within Metal–Organic Superstructures

Kawamura, Airi; Filatov, Alexander S.; Anderson, John S.; Jeon, Ie-Rang

(Natural) polymersApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialPhase analysisTechniqueWAXS

Slow Magnetic Relaxation of Co(II) Single Chains Embedded within Metal–Organic Superstructures

Kawamura, Airi; Filatov, Alexander S.; Anderson, John S.; Jeon, Ie-Rang

Two coordination polymers of the type Co(BPDC)(N-ox), with BPDC being 4,4?-biphenyldicarboxylate and N-ox being pyridine N-oxide (PNO) or isoquinoline N-oxide (IQNO), have been synthesized and characterized. The compounds feature 2D and 3D metal–organic networks that encapsulate Co(II)-based chains in a rigid superstructure. The dc and ac magnetic properties of these…
Sulfo-Phenylated Polyphenylenes Containing Sterically Hindered Pyridines

Xu, Shaoyi; Adamski, Michael; Killer, Miho; Schibli, Eric M.; Frisken, Barbara J.; Holdcroft, Steven

(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialRenewable energySAXSTechnique

Sulfo-Phenylated Polyphenylenes Containing Sterically Hindered Pyridines

Xu, Shaoyi; Adamski, Michael; Killer, Miho; Schibli, Eric M.; Frisken, Barbara J.; Holdcroft, Steven

We systematically investigated the effect of incorporating a sterically hindered pyridyl group into a sulfo-phenylated polyphenylene to control the polymer’s physicochemical properties through acid–base interactions. Homopolymers with similar molecular weights and comparable structures that vary by only one atom (N– vs C?) per repeat unit along the polymer chain were…
Effects of artepillin C on model membranes displaying liquid immiscibility

Pazin, W. M.; Vilanova, N.; Voets, I. K.; Soares, A. E. E.; Ito, A. S.

ApplicationCharacterizationCustomer publicationsLipidsMaterialPhase analysisSAXSShapeSizeStructural biologyTechnique

Effects of artepillin C on model membranes displaying liquid immiscibility

Pazin, W. M.; Vilanova, N.; Voets, I. K.; Soares, A. E. E.; Ito, A. S.

It has been hypothesized that the therapeutic effects of artepillin C, a natural compound derived from Brazilian green propolis, are likely related to its partition in the lipid bilayer component of biological membranes. To test this hypothesis, we investigated the effects of the major compound of green propolis, artepillin C,…