In this work, we explored interfacial behaviors and fluorescent properties of poly(diphenylacetylene) (PDPA) derivatives as soft conjugated polymers at the air-water interface. Surface pressure-mean molecular area (p-A) isotherms and atomic force microscopy (AFM) images of the Langmuir-Blodgett (LB) [or Langmuir-Schaefer (LS)] films provided a critical finding that the spreading solution concentration and addition of amphiphilic small molecules are important factors in determining surface micelle aggregation and surface morphology. Furthermore, the stability and reversibility of Langmuir monolayers on the water were investigated by isobaric creep measurements and compression-expansion cycles. In addition, the effects of surface morphological change on the fluorescent properties, associated with to alkyl chain length and substitution position, were examined using LB (or LS) films transferred at various surface pressures.

Interfacial behaviors of fluorescent conjugated poly(diphenylacetylene) derivatives at the air-water interface

248th National Meeting (2014)

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