200119-44-4Relevant academic research and scientific papers
Synthesis and physical properties of poly(phenylene vinylene)s having oligo(ethylene oxide) in the side chain
Mihara, Takashi,Yada, Takahiro,Koide, Naoyuki
, p. 421/[1463]-437/[1479] (2004)
Oligo(ethylene oxide) chains were introduced into the phenyl ring of the poly(phenylene vinylene) (PPV) derivatives to obtain electronic and ionic conductive liquid crystalline PPV derivatives. Thermal decomposition of all PPV derivatives occurred before isotropic melt. A typical texture of the liquid crystalline phase was not shown but birefringence was observed below the thermal decomposition temperature. Exhibition of a smectic phase for the polymers having triethylene or tetraethylene oxide chains was supported by X-ray measurements. Electronic conductivity of the PPV derivatives doped with I 2 and ionic conductivity of the mixture of these polymers and LiClO4 were also discussed.
Novel water-soluble red-emitting poly(p -phenylenevinylene) derivative: Synthesis, characterization, and fluorescent acetylcholinesterase assays
Zhang, Wenjun,Zhu, Linna,Qin, Jingui,Yang, Chuluo
scheme or table, p. 12059 - 12064 (2011/12/05)
A new cyano-substituted poly(p-phenylenevinylene) (PPV) derivative, MEOPS-CNPPV, is synthesized through Knoevenagel condensation of anionic diacetonitrile and neutral dialdehyde and characterized by 1H NMR, IR, elemental analysis, and gel-permeation chromatography (GPC). To our knowledge, the polymer is the first water-soluble red-emitting PPV derivative. The absorption and emission wavelength of this water-soluble conjugated polymer (CP) depend on the solvent. In buffer solution, the fluorescence of MEOPS-CNPPV is quenched by cationic dinitrobenzene derivatives. Further research indicates that dinitrobenzene derivative with a more flexible structure exhibits a larger Ksv. Making use of the charge reversal of dinitrobenzene-modified substrate, a "turn-on" method is developed for AChE activity assay with the new polymer as a fluorophore. This convenient and direct fluorometric assay thus provides a platform for novel red-emitting sensory systems.
