Photochromism

Photochromism is the reversible change of color upon exposure to light. It is a transformation of a chemical species (photoswitch) between two forms through the absorption of electromagnetic radiation (photoisomerization), where each form has a different absorption spectrum.[1][2] This reversible structural or geometric change in photochromic molecules affects their electronic configuration, molecular strain energy, and other properties.[3]

  1. ^ Lötzsch, Detlef; Eberhardt, Volker; Rabe, Christian (2016). "Chromogenic Materials". Ullmann's Encyclopedia of Industrial Chemistry. pp. 1–26. doi:10.1002/14356007.t07_t01. ISBN 978-3-527-30673-2.
  2. ^ Irie, M. (2000). "Photochromism: Memories and Switches-Introduction". Chemical Reviews. 100 (5): 1683–1684. doi:10.1021/cr980068l. ISSN 0009-2665.
  3. ^ Mahitha, P.M.; Nakul, S.; Kumar, Meenu; Kulkarni, Naveen V.; Kharissova, Oxana V.; Kharissov, Boris I. (2024), "Photochromic molecules and materials: design and development", Handbook of Emerging Materials for Sustainable Energy, Elsevier, pp. 237–254, doi:10.1016/b978-0-323-96125-7.00015-0, ISBN 978-0-323-96125-7, retrieved 2025-02-18
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