Theoretical and Experimental Study of New Photochromic Bis-Spiropyrans with Hydroxyethyl and Carboxyethyl Substituents

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</svg>°K) in toluene solution and corresponding logarithmic anomorphose.</table>

International Journal of Photoenergy

fig9

Figure 9

Figure 9: Theoretical and Experimental Study of New Photochromic Bis-Spiropyrans with Hydroxyethyl and Carboxyethyl Substituents 