Abstract: A biosensor comprising a swellable biologically sensitive element comprising a nucleic acid probe and a physicoelectrical transducer associated with the swellable biologically sensitive element. The physicoelectrical transducer converts the swelling of the swellable biologically sensitive element into a detectable electrical property. In preferred embodiments the biosensor comprises an oligonucleotide cross-linked polymer composite mounted on a suitable substrate comprising electrodes adapted to measure electrical impedance. Associated methods and devices comprising said biosensor are also provided.

Abstract: The present application, relates to iron bisphenolate complexes and methods of use and synthesis thereof. The iron complexes are prepared from tridentate or tetradentate ligands of Formula I: wherein R1 and R2 are as defined herein. Also provided are methods and processes of using the iron bisphenolate complexes as catalysts in cross-coupling reactions and in controlled radical polymerizations.

Abstract: Disclosed is a method for synthesizing star polymers having controlled tacticity. The method comprises reacting a lactone-based monomer having at least one stereocentre and a poly-functional initiator in the presence of at least one catalyst. In particular embodiments, the lactone-based monomer is L-lactide or DL-lactide, the poly-functional initiator is dipentaerythritol, and the at least one catalyst is an aluminum-salen catalyst (tBu[O,N,N,O] AlMe) or an aluminum-salan catalyst (Cl[O,N,N,O] AlMe). Star polymers comprising at least two arms and having heterotacticity bias, isotacticity bias, or stereoblocks of different tacticity bias are produced.