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A Robust, Broadly Absorbing Fulgide Derivative as a Universal Chemical Actinometer for the UV to NIR Region
Author(s) -
Reinfelds Matiss,
Hermanns Volker,
Halbritter Thomas,
Wachtveitl Josef,
Braun Markus,
Slanina Tomáš,
Heckel Alexander
Publication year - 2019
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.201900010
Subject(s) - actinometer , photoswitch , optoelectronics , photochemistry , quantum yield , wavelength , chemistry , photochromism , quantum , optics , materials science , physics , fluorescence , plasma , quantum mechanics
A fulgide photoswitch is presented as a novel actinometer for a broad range of wavelengths from the UV to the NIR region (340–700 nm). It is easily accessible and has a robust photochemistry and high fatigue resistance. Its photophysics and photochemistry are described in detail. Quantum yields of photoswitching were measured for a series of wavelengths and standardized against known standards (ferrioxalate actinometry, calibrated photodiode). We also present a method for the precise determination of photoswitching quantum yields by global analysis of the whole spectra and an alternative quick and easy method for rapid determination of photon fluxes.