Macromolecules

News

14 Oct 2022
Osaka Metropolitan University scientists have created a novel thermoresponsive polymer by adding divalent cations to polymers and water solvents. They also succeeded in controlling thermoresponsive properties by changing the type and mixing ratio of ionic species. This new polymer type is expected to be applied as an analytical reagent for ion-sensing devices and as a material for drug delivery systems.
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02 Sep 2022
The research team directed by H. Shimomoto and E. Ihara in Ehime University successfully developed a new Pd-based initiating system affording carbon–carbon main-chain polymers bearing end-functional groups. This achievement will contribute to progress in the field of polymer chemistry and will allow us to develop new types of functional polymers.
Schematic illustration of the distribution of the materials in the semiconductor layer for the OPV cell.
09 Dec 2020
Researchers at Hiroshima University in Japan have blended together various polymer and molecular semiconductors as photo-absorbers to create a solar cell with increased power efficiencies and electricity generation.
04 Aug 2020
The research team directed by H. Shimomoto and E. Ihara in Ehime University synthesized pH-responsive dendronized polymers by C1 polymerization of dendron-containing diazoacetates, and demonstrated a unique pH-responsive behavior of the resulting polymers. These achievements will contribute to progress in the field of polymer chemistry and will allow us to develop new types of smart soft materials.
23 Oct 2019
Two new Pd-based initiating systems for C1 polymerization of diazoacetates were reported: Pd(nq)2/borate (nq = naphthoquinone, borate = NaBPh4) and [Pd(cod)(Cl-nq)Cl/borate] [cod = 1,5-cyclooctadiene, Cl-nq = 2,3-dichloro-1,4-naphthoquinone]. The former exhibited high activity, affording poly(alkoxycarbonylmethylene)s with high molecular weights in high yields. The latter was effective for controlling the stereostructure of the resulting polymers.
25 Sep 2019
A new type of degradable synthetic polymer was prepared by Rh-catalyzed three-component polymerization of a bis(diazocarbonyl) compound, bis(1,3-diketone), and tetrahydrofuran. The resulting polymer, poly(β-keto enol ether), was highly sensitive to mild acidic conditions and degraded into a combination of well-defined low molecular weight compounds. With this unique degradability, the polymer could be utilized as an environmentally friendly polymeric material.
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28 Apr 2016
Researchers in Singapore and Hong Kong have created a novel, bacteria-repelling biomaterial that could increase the success of medical implants.
11 Sep 2015
Bioinspired carbon anodes enable high performance in lithium-ion batteries.
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07 Jan 2011
The separation of proteins into relatively homogeneous groups and sizes has been very important in biopharmaceuticals and medicines. Researchers at NIMS have fabricated tight mosaic cage silica nanotubes inside anodic alumina membranes as a promising candidate nanofilter for high-speed size-exclusion separation of high concentration macromolecules.
06 Oct 2010
Summaries of newsworthy papers include: Surprises from the Sun; Colour vision goes full circuit; Trapping with topography; Tropics feel the heat
01 Jul 2007
Hsp90 inhibitors allow small cell lung cancer to die, What happened before the Big Bang?, A solid base for nitride semiconductors, The stress of gaining weight, Spermicide favors HPV infection, Genetic link between prostate cancer and type 2 diabetes, Male pheromone stimulates neurogenesis in the female brain.
14 Feb 2007
Summaries of newsworthy papers include Astronomy: Forming the darkest galaxies in the Universe, Evolutionary psychology: Family ties, Particle acceleration: Wave up and Ecology: Conservation strategy rethink

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