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A kind of highly-crystalline solid polymer electrolytes, based on the α-PEO-urea-LiTFSI ternary complex, is introduced here. The introduction of LiTFSI into α-PEO-urea inclusion compound has not changed the crystalline structure of the inclusion compound. Furthermore, the ionic conductivity of this α-PEO-urea-LiTFSI ternary complex has reached up to 6.03 × 10−5 S cm−1 at 303 K, where the highest conductivity...
Poly(ε-caprolactone)-block-poly[2-(dimethylamino)ethyl methacrylate] (PCL-b-PDMAEMA) block copolymers were applied to fabricate elongated polymer platelets with axial length of 5–20 μm and thickness of ca. 10 nm by crystallization-driven self-assembly (CDSA). The block copolymer platelets composed of a crystallized PCL layer sandwiched between two PDMAEMA layers were obtained spontaneously by adding...
Herein, adsorption kinetics of poly(ethylene oxide)-block-polystyrene (PEO-b-PS) micelles from aqueous solution on PS thin films was investigated by quartz crystal microbalance with dissipation monitoring (QCM-D) and atomic force microscopy (AFM). The stability of adsorbed micelles against water washing was enhanced by the strong physical interaction between the substrate-identical core blocks of...
Presented with an elevated level of aqueous salt, a polyelectrolyte multilayer (PEM) swells and subsequently can undergo large mass uptake when exposed to a salt solution containing the capping polyelectrolyte. Features of the uptake depend on the properties of polyelectrolyte (molecular weight, polydispersity, concentration), solvent (salt concentration and ion identities), and PEM (number of layers,...
Two kinds of blue light-emitting hyperbranched crosslinkable polyfluorene P1 and P2 with different contents of branch unit were synthesized via the palladium-catalyzed Suzuki coupling reaction, and the linear crosslinkable polyfluorene P0 was also prepared for comparison. The molecular weight and thermal behavior of the polymers were measured by GPC, DSC and TGA. Compared with uncrosslinked P0, P1...
A series of hyperbranched triazine-containing polyfluorenes were synthesized by an “A 2 +A′ 2 +B 3 ” approach based on Suzuki polycodensation. The polymers showed pure blue emission and the maximum emissions red-shifted in polar solvents and in solid film. By introducing triazine into polyfluorene, the electron injection and transport properties were improved and green emission...
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