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Excitation wavelength dependence of emission spectra of polymer films doped with 2-naphthol

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Author Affiliations

  • 1Department of Physics Government Degree College Thatyur (Tehri Garhwal) Uttarakhand-249180, India
  • 2Department of Physics H.N.B. Garhwal University, Srinagar-Garhwal, Uttarakhand-246174, India

Res. J. Physical Sci., Volume 9, Issue (1), Pages 9-12, February,4 (2021)

Abstract

The excitation wavelength dependence of emission spectra for the aqueous solution and films of Polymethyl methacrylate (PMMA), Polyvinyl alcohol (PVA) and Polyvinyl acetate (PVAc) doped with 2-naphthol has been studied. It is observed that while for PVA and PVAc films the absorption and emission spectra of 2-naphthol are similar to the corresponding spectrum of 2-naphthol in water. But for PMMA while the absorption spectrums is as similar to absorption spectrum in other polymers and water the emission spectrum differs considerably. Such a difference has been explained on the basis of one to one binding of 2-naphthol with PMMA molecules. The observed excitation wavelength dependence of the emission spectrum is attributed to different conformations present in the polymer matrix.

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