Photochromic reactions of a diarylethene derivative in polymer matrices

• Published in: Journal of photochemistry and photobiology. A, Chemistry. Vol. 104; no. 1; pp. 203 - 206
• Main Authors: Tsujioka, Tsuyoshi, Kume, Minoru, Irie, Masahiro
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.04.1997; Elsevier Science
• Subjects: Chemistry; Diarylethene; Energy transfer; Exact sciences and technology; Fundamental areas of phenomenology (including applications); General and physical chemistry; Optical materials; Optics; Photochemistry; Photochromism; Physical chemistry of induced reactions (with radiations, particles and ultrasonics); Physics; Polymers and organics; Sensitivity; Sensitivity; Diarylethene; Photochromism; Energy transfer; Sulfur heterocycle; Quantity ratio; Solid solutions; Nitrogen heterocycle; Heterocyclic oxygen compounds; Visible radiation; Optical materials; Organic anhydride; Experimental study; Polymers; Photochromic materials
• ISSN: 1010-6030; 1873-2666
• DOI: 10.1016/S1010-6030(96)04509-1

The sensitivity (product of molar extinction coefficient and quantum yield) of 2-(1,2-dimethyl-3-indolyl)-3-(2,4,5-trimethyl-3-thienyl)-maleic anhydride is dependent on its concentration in poly(vinyl butyral) film and on the irradiation wavelength (515 nm and 633 nm). Energy transfer from the open-ring to the closed-ring form is suggested as a possible mechanism for the time dependence of the sensitivity in the polymer film containing high chromophore concentration on irradiation with 515 nm light.