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Thermal spin transport properties of the Li atom doped C28 monomolecular device were simulated by using firstprinciple study combined with density functional theory. By applying a temperature field, the upper and lower spins provide transport channels for the electrons and holes in the Li doped C28 monomolecular device, respectively. The thermal spin current increases with temperature increasing in the MJ1 and MJ3, but the thermal spin current increases then decrease with temperature increasing in the MJ2 . The spin-dependent Seebeck effect appears in the Li doped C28 monomolecular device, and the negative differential resistance effect appears in the MJ2. The physical mechanism was explained using the Fermi-Dirac distribution and spin transmission spectrum. These interesting effects suggest that the Li atom doped C28 monomolecular device can be used as new spin nanodevices. [ABSTRACT FROM AUTHOR]

A novel kind of amphiphilic hyperbranched poly(propargyl quaternary ammomium methacrylate)- co-polymethyl methacrylate (HPPrAM- co-PMMA) is facilely synthesized via a combination of self-condensing vinyl polymerization (SCVP), reversible addition-fragmentation chain transfer (RAFT) polymerization, and a highly efficient Menschutkin reaction. With water soluble quaternary ammonium salt moieties and hydrophobic PMMA segments, the amphiphilic HPPrAM- co-PMMA is further employed as the host molecule for anionic dye supermolecular encapsulation. Due to the strong electrostatic interaction and large polar difference between the HPPrAM and PMMA moieties, the AHP exhibits a high loading capability of water soluble dyes ( Cdyes) (such as rose bengal, methyl orange, and fluorescein sodium). Furthermore, the AHP-dye complex is used as a coloring additive for common polymers, such as styrene- block-butadiene- block-styrene copolymer (SBS) and poly(methyl methacrylate) (PMMA). A sample colored with the AHP-dye complex shows good dye dispersion, uniformity, and coloring stability. [ABSTRACT FROM AUTHOR]