Reversible colour-change polymer film

  • Jordi from Institut Català de Nanociència i Nanotecnologia
  • From Spain
  • Responsive
  • Patents for licensing

Summary of the technology

A polymer film coating for glass and plastic surfaces that allows reversible colour changes in response to variations in temperature, exposure to light or both

Institut Català de Nanociència i Nanotecnologia

Details of the Technology Offer

A polymer film coating for glass and plastic surfaces that allows reversible colour changes in response to variations in temperature, exposure to light or both.

Based on polymeric core-shell nanocapsules containing commercially-available photochromic dyes, this is the first time such multi-responsiveness has been achieved in solid materials.

These reversible colour-change film coatings respond to two stimuli: temperature and light. The following changes are possible:

  • Colourless to coloured upon exposure to UV light

  • Coloured to colourless upon exposure to visible light at room temperature

  • Coloured to colourless and/or vice versa in response to temperature changes (configurable between 0 and 65ºC)

All-in-one: all the above effects with the same coating

Current development status

Laboratory prototypes


Solar protection systems, Rewritable displays, Eyewear, Smart windows, data encryption, cold chain management and packaging, anti-counterfeit systems

Desired business relationship

Patent licensing

Technology development

Adaptation of technology to other markets

Intellectual property status

  • Patent already applied for
  • Patent application number :WO2017191346

Attached documents

Related Keywords

  • Coatings
  • Packaging for materials
  • Agrofood Industry
  • Food quality and safety
  • Tracability of food
  • Micro- and Nanotechnology related to agrofood
  • Electronics Related Market
  • Industrial Products
  • Other Industrial Products (not elsewhere classified)

About Institut Català de Nanociència i Nanotecnologia

ICN2 is a highly specialized and renowned research centre. Its research lines focus on the newly discovered physical and chemical properties that arise from the fascinating behaviour of matter at the nanoscale. The patrons of ICN2 are the Government of Catalonia, the CSIC and the autonomous University of Barcelona.

The Institute promotes collaboration among scientists from diverse backgrounds (Physics, chemistry, biology, engineering...), to develop basic and applied research, always seeking for interactions with local and global industry. ICN2 also train researchers in nanotechnology, develops an intense activity to facilitate the uptake of nanotechnology in industry and promotes networking among scientists, engineers, technicians, business people, society and policy makers.

The recent discoveries in nanoscience might suppose a change of paradigm in areas as relevant as medicine, energy or microelectronics. The excellence of research developed at ICN2 has an enormous potential to change our everyday life. For this reason the institute is deeply involved in strategic international initiatives such as Graphene Flagship, being one of its nine original promoters.

Jordi Reverter

Never miss an update from Jordi Reverter

Create your free account to connect with Jordi Reverter and thousands of other innovative organizations and professionals worldwide


Send a request for information
to Jordi

About Technology Offers

Technology Offers on Innoget are directly posted
and managed by its members as well as evaluation of requests for information. Innoget is the trusted open innovation and science network aimed at directly connect industry needs with professionals online.


Need help requesting additional information or have questions regarding this Technology Offer?
Contact Innoget support