Phosphonium ionomers having different lengths of spacers between cationic sites were prepared. Comparison of multiple properties of these ionomers with or without hydrophobic sidechains were examined. ABSTRACT The properties of phosphonium polyelectrolytes (PELs) were evaluated in an effort to assess the influence of both side chain and main...

A novel blue polycyclic aromatic compound 2,8‐dibromo‐14,14‐dioctyl‐14H‐benzo[b]benzo[5,6]fluoreno[1,2‐d]thiophene 9,9‐dioxide and the related deep‐blue light‐emitting polyfluorenes were reported. Copolymers exhibited excellent electroluminescent spectra stability in the current densities from 100 to 800 mA cm−2, and showed blue‐shifted and narrowed...

Poly(d,l‐lactic acid‐co‐glycolic acid)‐b‐poly(ethylene glycol)‐b‐poly(d,l‐lactic acid‐co‐glycolic acid) (PLGA‐PEG‐PLGA) copolymers to make thermoresponsive hydrogels, such that an aqueous polymer solution undergoes a sol–gel transition at physiological temperatures. PLGA/PEG ratio was shown to effect gelling temperature. Furthermore, the ratio that...

The single‐strand 1H,1H,2H,2H‐heptadecafluorodec‐1‐yl) phosphonic acid‐treated polyurethane–tin oxide–and carbon nanotube composite microfiber‐based chemical sensor can detect the presence of a chemical in pure water or counterfeit gasoline in pure gasoline by observing variations in the length and diameter of the fiber and monitoring the electrical...

By replacing a common (hazardous) halogenated solvent with a nonchlorinated one, we prepared blade‐coated bulk heterojunction solar cells with ~10% improved PCEs. For an in depth understanding of the observed enhancement and to disclose the effects induced by the halogen‐free solvent, we carefully investigated the optical, morphological, and electrical...

Functionalization of poly(lactic acid) (PLA) is usually performed using peroxide initiators, leading to numerous undesirable side reactions. Here, functionalization of PLA with N‐acetoxy‐phthalimide (NAPI) was performed in the melt by reactive extrusion, without using any peroxide initiator. Thermal degradation of NAPI produced both (a) aminyl and (b)...