Photoexcited singlet and triplet states of a UV absorber ethylhexyl methoxycrylene

A Kikuchi, Y Hata, R Kumasaka…

Index: Kikuchi, Azusa; Hata, Yuki; Kumasaka, Ryo; Nanbu, Yuichi; Yagi, Mikio Photochemistry and Photobiology, 2013 , vol. 89, # 3 p. 523 - 528

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Citation Number: 11

Abstract

Abstract The excited states of UV absorber, ethylhexyl methoxycrylene (EHMCR) have been studied through measurements of UV absorption, fluorescence, phosphorescence and electron paramagnetic resonance (EPR) spectra in ethanol. The energy levels of the lowest excited singlet (S 1) and triplet (T 1) states of EHMCR were determined. The energy levels of the S 1 and T 1 states of EHMCR are much lower than those of photolabile 4-tert-butyl-4′ ...