Polyphosphazenes with high refractive indices: Optical dispersion and molar refractivity

Michael Olshavsky, Harry R. Allcock

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


The optical properties of a series of high refractive index polyphosphazenes were investigated. The wavelength-dependent change in refractive index (optical dispersion) associated with two selected polymers was examined using variable-angle spectroscopic ellipsometry. Values of the Abbé number for these polymers were calculated. These systems have a VD = 20-25, which compares closely with other organic polymers with similar refractive indices. Calculation of the molar refractivity (Rm) associated with the [N=P] repeat unit structure yielded a value of Rm[N=P] = 14.36 cm3/mol This value is compared with other polymer repeat unit structures. The comparison indicates that the [N=P] repeat unit has a linear polarizability close to that found in conjugated [C=C] bonds.

Original languageEnglish (US)
Pages (from-to)4179-4183
Number of pages5
Issue number14
StatePublished - Jul 14 1997

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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