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Optical constants of (C6H9NO)n (Polyvinylpyrrolidone, PVP)
König et al. 2014: n,k 0.375–1.0 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]



Optical constants of poly(vinylpyrrolidone) (PVP)


T. A. F. König, P. A. Ledin, J. Kerszulis, M. A. Mahmoud; M. A. El-Sayed, J. R. Reynolds and V. V. Tsukruk. Electrically tunable plasmonic behavior of nanocube-polymer nanomaterials induced by a redox-active electrochromic polymer, ACS Nano 8, 6182-6192 (2014) (Numerical data kindly provided by Tobias König)


[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]


Polyvinylpyrrolidone, (C6H9NO)n

Polyvinylpyrrolidone (PVP, (C6H9NO)n) is a water-soluble polymer made from the monomer N-vinylpyrrolidone. This polymer has found its way into a myriad of applications due to its unique properties such as excellent solubility in water and many organic solvents, capability to form films, and adhesive qualities. In the pharmaceutical industry, PVP is employed as a binder in tablet formulations, and in cosmetics, it's often used as a stabilizer and emulsifier. In the optics realm, PVP solutions can be used for spin coating to form thin films. Additionally, its hygroscopic nature allows it to be employed as a moisture-absorbing agent in many products. One notable property of PVP is its capability to form complexes with various compounds, enhancing the solubility of poorly water-soluble drugs, leading to its common use in the pharmaceutical sector.

Other names

  • PVP
  • Povidone
  • Copovidone
  • PVPP
  • Crospovidone
  • Polyvidone
  • PNVP
  • Poly[1-(2-oxo-1-pyrrolidinyl)ethylen]
  • 1-Ethenyl-2-pyrrolidon homopolymer
  • 1-Vinyl-2-pyrrolidinon-Polymere

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