Study on the Difference of Photochromic and Thermochromic Mechanism of Ethylenediamine Trimolybdate
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Ethylenediamine trimolybdate ((C<SUB>2</SUB>H<SUB>10</SUB>N<SUB>2</SUB>)[Mo<SUB>3</SUB>O<SUB>10</SUB>], denoted as ENTMo) shows unusual photochromic and thermochromic properties. The color of the white ENTMo compounds becomes reddish brown gradually under UV irradiation, and changes gradually to blue-black upon annealing. XRD patterns and FT-IR spectra verify that the crystal structure of the colored samples is almost unchanged except distortion. UV–vis diffuse reflectance spectra (DRS) and ESR spectra of the photochromic and the thermochromic samples could confirm that there must exist difference between thermochromic and photochromic mechanism.
- Chemistry Letters
Chemistry Letters 35(10), 1146-1147, 2006-10-05
The Chemical Society of Japan