Adaptable Ultraviolet Reflecting Polymeric Multilayer Coatings of High Refractive Index Contrast

José Raúl Castro Smirnov, Masateru Ito, Mauricio Ernesto Calvo, Carmen López-López, Alberto Jiménez-Solano, Juan Francisco Galisteo-López, Paul Zavala-Rivera, Koichiro Tanaka, Easan Sivaniah*, Hernán Míguez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


A synthetic route is demonstrated to build purely polymeric nanostructured multilayer coatings, adaptable to arbitrary surfaces, and capable of efficiently blocking by reflection a targeted and tunable ultraviolet (UV) range. Reflection properties are determined by optical interference between UV light beams reflected at the interfaces between polystyrene layers of different porosity and hence refractive index. As no dopant absorber intervenes in the shielding effect, polymer degradation effects are prevented. Alternated porosity results from the modulation of photochemical effects at the few tens of nanometers length scale, combined with the collective osmotic shock induced during the processing of the precursor diblock copolymer film. Experimental evidence of the application of this method to coat rough surfaces with smooth and conformal UV protecting films is provided.

Original languageEnglish
Pages (from-to)1633-1639
Number of pages7
JournalAdvanced Optical Materials
Issue number11
StatePublished - 1 Nov 2015

Bibliographical note

Publisher Copyright:
© 2015 The Authors.


  • Block copolymers
  • Collective osmotic shock
  • Photonic crystals
  • Porous multilayers
  • UV lithography


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