01064 IUPAC Gold Book - chiroptic 10.1351/goldbook.C01064 C01064 current mentioned: CD, CPL, ORD, circular dichroism, optical rotatory dispersion, circular polarization of luminescence 1 A term referring to the optical techniques (using refraction, absorption or emission of anisotropic radiation) for investigating chiral substances [e.g. measurements of optical rotation at a fixed wavelength, optical rotatory dispersion (ORD), circular dichroism (CD), and circular polarization of luminescence (CPL)]. chiral https://goldbook.iupac.org//terms/view/C01057 dichroism https://goldbook.iupac.org//terms/view/DT07357 luminescence https://goldbook.iupac.org//terms/view/L03641 optical rotation https://goldbook.iupac.org//terms/view/O04312 polarization https://goldbook.iupac.org//terms/view/P04712 wavelength https://goldbook.iupac.org//terms/view/W06659 PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2203 (https://doi.org/10.1351/pac199668122193) https://goldbook.iupac.org/terms/view/C01064/html https://goldbook.iupac.org/terms/view/C01064/json https://goldbook.iupac.org/terms/view/C01064/plain Citation: 'chiroptic' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.C01064 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-05-30T09:55:32+00:00