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Reversible multi-coloring reaction of spironaphtooxazine controlled by long-chain molecule

Paper ID Volume ID Publish Year Pages File Format Full-Text
27603 44031 2010 5 PDF Available
Title
Reversible multi-coloring reaction of spironaphtooxazine controlled by long-chain molecule
Abstract

A novel reversible multi-colored (red, violet, blue and yellow) film was realized using a typical photochromic dye (the color former) and docosylphosphonic acid (the color developer). A mixture of the color former/color developer exhibiting reversible multi-coloring reactions was controlled by heat-treatment of the solid phase. The structure and crystalline state of the film mixtures were investigated by UV–vis spectroscopy, X-ray diffraction and high-resolution electron diffraction measurements. The color of the films was controlled by the structural type of the photomerocyanine-form (protonated zwitterionic, zwitterionic and quinoid). The mechanism of the multi-coloring reaction was concluded to be the chemical combination of color formers and color developers, which produces red and violet colors, and when the coloration-temperature acts to separate the color formers from the color developers, yellow color appears. Furthermore, the color of the film changed from yellow to blue upon 360 nm light irradiation.

Keywords
Thermochromism; Photochromism; Spironaphtooxazine; Merocyanine; Rewritable paper
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Reversible multi-coloring reaction of spironaphtooxazine controlled by long-chain molecule
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 213, Issues 2–3, 25 June 2010, Pages 189–193
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us