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Of or relating to a substance or object whose color changes on exposure to light: photochromatic glasses that darken in sunlight.

pho′to·chro′mism (-krō′mĭz′əm) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Chemistry) chem the reversible transformation of something's colour due to exposure to electromagnetic radiation such as sunlight
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References in periodicals archive ?
He was recognized for contributions in photochromism and variable polarization and leadership in commercialization.
ChuanJun, Synthesis, characterization, thermochromism and photochromism of aromatic aldehyde hydrazine derivatives.
The most investigated classes of photochromes are spiropyrans and spirooxazines, diarylethenes, fulgides, and fulgimides [8] exhibiting positive photochromism with bathochromic spectral changes of the photoinduced isomers [9].
Sinha, "Lead(II) complexes of 1-alkyl-2-(arylazo)imidazole: synthesis, structure, photochromism and metallomesogenic properties," Polyhedron, vol.
These films have potential applications in the fields of photoelectrochemistry [12,13], photocatalysis [7,14-16], electrocatalysis [17,18], photochromism [18], sensors [9,19], and electrochromism [18,20].
Schiff bases exhibiting photochromism are of interest due to their potential applications in optical switching and data storage devices [15].
Milisenda (German Gemmological Association, IdarOberstein) and co-authors examined some gemstones with photochromism: hackmanite, tugtupite and scapolite.
DG, Duan, X, "Study on the Photochromism of Ni-Al Layered Double Hydroxides Containing Nitrate Anions." Ear.
Moreover, the use of PCM microcapsules can simulate the efficacy of other functionalities obtained by microencapsulation technology, such as thermochromism or photochromism, because this material can be easily measured by using a fast and simple technique (differential scanning calorimetry) before and after washing cycles.
Trommsdorff, "Photochromism and thermochromism driven by intramolecular proton transfer in dinitrobenzylpyridine compounds, " The Journal of Physical Chemistry, vol.
Among the organic NLO chromophores, pyrazolines embedded in polymer show good optical properties, such as polarization, color change, fluorescent complex formation, polymorphism, molecular refraction and photochromism behavior.