Elsevier

Synthetic Metals

Volume 115, Issues 1–3, 1 November 2000, Pages 275-277
Synthetic Metals

Films of a novel polydiacetylene for photonics studies

https://doi.org/10.1016/S0379-6779(00)00316-7Get rights and content

Abstract

We have prepared a novel polycarbazolyldiacetylene (polyDCHD-HS) soluble in several organic solvents. The electronic absorption spectra in different solvents show the presence of the red form of the polymer with the excitonic absorption peak around 540 nm. Thin films with thickness in the range 0.02–2.5 μm were prepared by the spin cast technique to characterize the linear optical properties and test the possibility of obtaining guided propagation of light. Films from chloroform solution, though with considerable surface roughness, allowed the measure of the TE and TM refractive indices at both 849 and 1321 wavelengths. Higher quality films, obtained from toluene, allowed to observe a substantial improvement in the waveguiding properties. The results here reported seem quite promising in view of future photonics applications.

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Acknowledgements

We acknowledge finantial support from MURST and CNR (PF-MSTA II).

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Cited by (5)

  • Nonlinear optical response of a polycarbazolyldiacetylene film through femtosecond two-photon spectroscopy

    2002, Chemical Physics Letters
    Citation Excerpt :

    Previous optical characterization of polyDCHD-HS includes UV–Vis spectroscopy [11], FT–Raman spectroscopy [11], fluorescence [11,12], photoinduced absorption and time resolved spectroscopy [13]. Thin film waveguides of polyDCHD-HS with low propagation losses were fabricated [14], confirming that the material has the mechanical properties required for an optical device. The nonlinear response of polyDCHD-HS was measured in the case of solutions [15] and thin films [16,17].

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