Raman and in situ FTIR-ATR characterization of polyazulene films and its derivate

Article Abstract:

An empirical technique to relate the Raman and in situ Fourier transform infrared (FTIR) spectra from azulene-based polymers according to the effective conjugation coordinate theory (ECC) is described. The observations indicate that the azulene films electrosynthesized at various polymerization potentials may have the same structure but in films electrosynthesized at high polymerization potential the cross-linking is more, leading to films with increased effective conjugation length.

Polymers

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Stability of an ultrathin plasma polymerized film in aqueous solution: In situ detection by surface plasmon resonance

Article Abstract:

Surface plasmon resonance (SPR) is implemented as an efficient method to characterize the ultrathin film stability in real time and a radio frequency (RF) plasma polymerized film is monitored by swelling or extracting behaviors in aqueous solution. The high-resolution SPR has revealed that film stability strongly depended on the monomers, plasma mode and substrate locations as well as plasma polymerization conditions.

Optical properties, Thin films, Multilayered, Multilayered thin films, Plasmons (Physics)

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Tuning the molecular properties of polybenzimidazole by copolymerization

Article Abstract:

The synthesis and characterization of a series of random copolymers of polybenzimidazole (PBI) consisting of m- and p-phenylene linkage in the backbone is demonstrated. The results indicate that the molecular properties of the PBI-type polymers could be efficiently controlled by copolymerizing the isomers of the dicarboxylic acid with the tetraamine.

Carboxylic acids, Benzimidazoles

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