Journal ArticleDOI
Photophysics, photochemistry and kinetics of photochromic 2H-pyrans and chromenes
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TLDR
In this paper, photochromism of coumarin-substituted chromenes (xanthyletin and seselin) was observed in about 800 ns.About:
This article is published in Journal of Photochemistry.The article was published on 1986-05-01. It has received 86 citations till now. The article focuses on the topics: Triplet state.read more
Citations
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Natural and synthetic chromenes, fused chromenes, and versatility of dihydrobenzo[h]chromenes in organic synthesis.
Ramendra Pratap,Vishnu Ji Ram +1 more
Journal ArticleDOI
Photoprocesses in Spiropyran-Derived Merocyanines
TL;DR: The photophysical and photochemical properties of a series of spiro[2H-1-benzopyran-2,2‘-indoline] compounds were studied by nanosecond laser photolysis in solution as discussed by the authors.
Journal ArticleDOI
Kinetic and structural studies of the photochromic process of 3H-naphthopyrans by UV and NMR spectroscopy
Stéphanie Delbaere,Barbara Luccioni-Houzé,Christophe Bochu,Yannick Teral,Mylène Campredon,Gaston Vermeersch +5 more
TL;DR: The photomerocyanines resulting from the UV irradiation of closed colourless 3,3-diphenyl-3H-naphtho[2,1-b]pyran and its 3, 3-bis(4-fluorophenyl) derivative have been studied by UV-VIS and NMR spectroscopy as discussed by the authors.
Journal ArticleDOI
NMR Kinetic Investigations of the Photochemical and Thermal Reactions of a Photochromic Chromene
TL;DR: The photochromic behavior of 2,2-di(4-fluorophenyl)-6-methoxy-2H-1-chromene has been investigated by 19F NMR spectroscopy and it has been shown that, among the 12 possible isomerization processes, only some paths were active.
Journal ArticleDOI
Spectrokinetic study of 2,2-diphenyl-5,6-benzo(2H)chromene: a thermoreversible and photoreversible photochromic system
TL;DR: In this article, the photochromic reaction of the 2,2-diphenyl-5,6-benzo(2H)chromene is investigated by spectrophotometric methods using monochromatic irradiation wavelengths in the UV and visible ranges.
References
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Journal ArticleDOI
Photochromism of Synthetic and Naturally Occurring 2H-Chromenes and 2H-Pyrans
Ralph S. Becker,Josef Michl +1 more
Journal ArticleDOI
Photochromic spiropyrans. I. Absorption spectra and evaluation of the .pi.-electron orthogonality of the constituent halves
Norris W. Tyer,Ralph S. Becker +1 more
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Proof of structure of the colored photoproducts of chromenes and spiropyrans
Jaroslav Kolc,Ralph S. Becker +1 more
Journal ArticleDOI
The spectroscopy and photochemistry of naturally occurring and synthetic chromenes.
Jaroslav Kolc,Ralph S. Becker +1 more
TL;DR: All naturally occurring and synthetic chromenes studied exhibit photochromism at — 196°C and in some cases at room temperature, and Lapachenole (a 7,8‐benzochromene) shows the most rapid and highest percentage conversion to the colored form and no emission.
Related Papers (5)
Photochromism of Synthetic and Naturally Occurring 2H-Chromenes and 2H-Pyrans
Ralph S. Becker,Josef Michl +1 more