Applied to photochromic
compounds possessing a high efficiency for colouring with near-ultraviolet
radiation and a low efficiency for bleaching
radiation, but a moderate efficiency for thermal fading at ambient temperature. These
compounds are activated by unfiltered sunlight and deactivated under diffuse daylight
conditions, therefore being suitable for sun-lens applications.
PAC, 2007, 79, 293
(Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006))
on page 350
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook