A spectral-kinetic investigation of the negative photochromism of systems based on complexes of spiropyrans with metal ions

A comparative spectral-kinetic study of the negative photochromism of complexes of molecules of nitrosubstituted indoline spiropyrans with metal ions in solutions and polymer matrices is carried out. The possibility of creating polymer coatings with negative photochromism, based on the complexes of...

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Bibliographic Details
Published in:Optics and spectroscopy 2017-09, Vol.123 (3), p.404-410
Main Authors: Barachevsky, V. A., Valova, T. M.
Format: Article
Language:English
Subjects:
Cationic polymerization
Condensed-Matter Spectroscopy
Coordination compounds
Lasers
Metal ions
Metals
Optical Devices
Optics
Photochromism
Photonics
Physics
Physics and Astronomy
Polymer films
Polymers
Spectra
Spiropyrans
Transformations
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Summary:A comparative spectral-kinetic study of the negative photochromism of complexes of molecules of nitrosubstituted indoline spiropyrans with metal ions in solutions and polymer matrices is carried out. The possibility of creating polymer coatings with negative photochromism, based on the complexes of spiropyran molecules with metal ions is shown for the first time. It is determined that the efficiency of photochromic transformations of complexes depends on the nature of the polymer binder, the component composition of the polymer film, and the properties of metal cations. During the storage of photochromic polymer films in the dark, a spectral manifestation of the transformation of metal complexes into putative protonated complexes is revealed. It is found that the stability of the complexes is determined by the nature of the polymer binder and the affinity of the metal cations to an electron.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X17090065